Updated: Sunday 19 October 2025 - 14:23 
Next update: Sunday 19 October 2025 - 18:23 

Our own forecast Harrow, UK
by: Hillview Weather


Temperature

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Thunder

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Sol

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Wind

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Max/Min Temperature

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This
afternoon
Tonight Monday Monday
night
Tuesday Tuesday
night
Wednesday Wednesday
night
ra nra ra nfg bkn nbknfg sctfg nra
Rain likely Chance rain Rain likely Fog Mostly Cloudy Fog late Fog a.m. Rain likely
5 mm (60%) <2 mm (40%) 15 mm (90%) <2 mm (30%) <2 mm (20%) - <2 mm (20%) 30 mm (90%)
Hi: 15° Lo: 11° Hi: 14° Lo: 11° Hi: 14° Lo: Hi: 14° Lo: 11°
S
5.5923 mph S
S
4.971 mph S
S
6.2137 mph S
SW
5.5923 mph SW
SW
6.2137 mph SW
SW
4.3496 mph SW
SW
2.4855 mph SW
SSE
6.8351 mph SSE
UV 1 Low UV 1 Low UV 1 Low UV 1 Low
raThis
afternoon
Dense overcast. Rain likely. High 15°. UV index up to 1. Wind south around 9 mph, gusting to 18 mph. Chance of precipitation 60 percent. Precipitation mostly around 5 mm.
nraTonightMostly cloudy to cloudy in the evening, becoming mostly cloudy after midnight. Patchy light fog. A chance of rain in the evening, then a slight chance of rain after midnight. Low 11°. Wind south around 8 mph, gusting to 16 mph. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
raMondayDense overcast in the morning, becoming cloudy in the afternoon. Rain likely in the morning, then a chance of rain in the afternoon. High 14°. UV index up to 1. Wind south around 10 mph, gusting to 17 mph. Chance of precipitation 90 percent. Precipitation mostly between 10 and 20 mm.
nfgMonday
night
Mostly cloudy. Patchy light fog. A slight chance of rain in the evening. Low 11°. Wind southwest around 9 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
bknTuesdayCloudy in the morning, becoming partly to mostly cloudy in the afternoon. A slight chance of rain. High 14°. UV index up to 1. Wind southwest around 10 mph, gusting to 17 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
nbknfgTuesday
night
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Light to moderate fog after midnight. Low 8°. Wind southwest around 7 mph, gusting to 15 mph.
sctfgWednesdayPartly cloudy in the morning, becoming cloudy in the afternoon. Patchy light fog in the morning. A slight chance of rain in the afternoon. High 14°. UV index up to 1. Wind southwest around 4 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
nraWednesday
night
Dense overcast. Rain very likely. Low 11°. Wind south-southeast around 7 mph, gusting to 16 mph, in the evening, becoming 11 mph, gusting to 17 mph, after midnight. Chance of precipitation 90 percent. Precipitation mostly around 30 mm.
raThursdayDense overcast in the morning, becoming mostly cloudy in the afternoon. Rain likely in the morning, then a chance of rain in the afternoon. High 12°, but temperatures falling in the afternoon. UV index up to 1. Wind west around 12 mph, gusting to 20 mph. Chance of precipitation 80 percent. Precipitation mostly around 10 mm.
nraThursday
night
Partly cloudy in the evening, becoming mostly cloudy after midnight. A chance of rain. Low 7°. Wind west around 13 mph, gusting to 21 mph. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
sctFridayPartly cloudy. A chance of rain. High 12°. UV index up to 1. Wind west around 12 mph, gusting to 19 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
nraFriday
night
Mostly cloudy. A slight chance of rain in the evening, then a chance of rain after midnight. Low 7°. Wind west-southwest around 11 mph, gusting to 18 mph. Chance of precipitation 50 percent. Precipitation mostly around 2 mm.
raSaturdayDense overcast. Rain likely. High 10°. UV index up to 0. Wind west-northwest around 11 mph, gusting to 18 mph, in the morning, becoming 8 mph in the afternoon. Chance of precipitation 60 percent. Precipitation mostly between 2 and 5 mm.
nfgSaturday
night
Fair to partly cloudy in the evening, becoming clear after midnight. Patchy light fog. A slight chance of rain. Low 5°. Wind west-northwest around 5 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
Period Forecast Temperature Wind Precipitation Pressure UV
Afternoon
14 - 18
Overcast Chance drizzleOvercast Moderate rain Overcast - Cloudy
Moderate rain - Chance drizzle
15° South 3 - 12 mph
Gust up to 19 mph
3 Bft Gentle breeze
3.11 mm 1001 hPa uv
Low (0.5)
Evening
18 - 00
Partly cloudy DrizzleMostly cloudy Light fog Overcast - Partly cloudy
Drizzle - Light rain - Light fog
13° South 7 - 11 mph
Gust up to 17 mph
3 Bft Gentle breeze
3.42 mm 997 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Partly cloudy Light fogOvercast Drizzle Cloudy - Overcast
Light fog - Chance Rain Showers - Drizzle
12° South 8 mph
Gust up to 12 mph
2 Bft Light breeze
0.25 mm 995 hPa-
Morning
06 - 12
Overcast Chance Rain ShowersOvercast Heavy rain Overcast
Chance Rain Showers - Probably showers - Heavy rain
13° South 11 mph
Gust up to 16 mph
3 Bft Gentle breeze
3.12 mm 991 hPa-
Afternoon
12 - 18
Cloudy Light rain Overcast - Cloudy
Probably showers - Light rain
14° South 12 mph
Gust up to 17 mph
3 Bft Gentle breeze
9.48 mm 986 hPa uv
Low (0.7)
Evening
18 - 00
Mostly cloudy DrizzleCloudy Chance Rain Showers Mostly cloudy
Probably showers - Chance Rain Showers - Drizzle
13° SW 10 mph
Gust up to 15 mph
3 Bft Gentle breeze
0.83 mm 986 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Mostly cloudy Chance Rain ShowersCloudy Chance Rain Showers Cloudy
Chance Rain Showers
12° SW 10 mph
Gust up to 15 mph
3 Bft Gentle breeze
0.32 mm 990 hPa-
Morning
06 - 12
Cloudy Drizzle Cloudy - Overcast
Chance Rain Showers - Drizzle
12° SW 10 mph
Gust up to 15 mph
3 Bft Gentle breeze
0.01 mm 992 hPa uv
Low (0.8)
Afternoon
12 - 18
Partly cloudy Heavy dewCloudy Chance Rain Showers Mostly cloudy
Drizzle - Chance Rain Showers
14° SW 11 mph
Gust up to 17 mph
3 Bft Gentle breeze
0.16 mm 993 hPa uv
Low (1.4)
Evening
18 - 00
Mostly cloudy Heavy dewMostly cloudy Heavy dew Mostly cloudy 13° SW 10 mph
Gust up to 16 mph
3 Bft Gentle breeze
0.02 mm 995 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Partly cloudy Light fogPartly cloudy Moderate fog Partly cloudy
Light fog
10° SW 7 mph
Gust up to 12 mph
2 Bft Light breeze
- 997 hPa-
Morning
06 - 12
Partly cloudy Heavy dewMostly cloudy Heavy dew Mostly cloudy
Light fog
- 12° WSW 4 mph
Gust up to 9 mph
1 Bft Light air
- 999 hPa uv
Low (0.9)
Afternoon
12 - 18
Cloudy Heavy dewOvercast Light rain Cloudy - Overcast
Chance drizzle - Light rain
14° WSW SSW 5 mph
Gust up to 11 mph
2 Bft Light breeze
0.09 mm 999 hPa uv
Low (1)
Evening
18 - 00
Overcast Chance Rain ShowersOvercast Moderate rain Overcast
Chance drizzle - Moderate rain - Chance Rain Showers
12° SSE 4 - 10 mph
Gust up to 15 mph
3 Bft Gentle breeze
2.04 mm 994 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Overcast Light rainOvercast Heavy rain Overcast
Chance Rain Showers - Light rain - Probably showers
12° SSE 12 mph
Gust up to 17 mph
3 Bft Gentle breeze
29.97 mm 986 hPa-
Morning
06 - 12
Overcast Probably showersOvercast Heavy rain Overcast
Probably showers - Heavy rain
12° West 13 mph
Gust up to 19 mph
4 Bft Moderate breeze
2.5 mm 984 hPa-
Afternoon
12 - 18
Partly cloudy Heavy dewCloudy Light rain Overcast - Partly cloudy
Probably showers - Light rain - Drizzle
12° West 13 mph
Gust up to 20 mph
4 Bft Moderate breeze
8.15 mm 990 hPa uv
Low (0.7)
Evening
18 - 00
Partly cloudy Heavy dewMostly cloudy Light rain Mostly cloudy
Light rain
11° West 15 mph
Gust up to 21 mph
4 Bft Moderate breeze
0.99 mm 997 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Mostly cloudy Heavy dewCloudy Heavy dew Mostly cloudy West 14 mph
Gust up to 20 mph
4 Bft Moderate breeze
0.54 mm 999 hPa-
Morning
06 - 12
Partly cloudy Heavy dewMostly cloudy Heavy dew Partly cloudy
Light rain
10° West 13 mph
Gust up to 18 mph
4 Bft Moderate breeze
0.08 mm 1001 hPa uv
Low (0.7)
Afternoon
12 - 18
Partly cloudy Moderate dewMostly cloudy Chance Rain Showers Partly cloudy
Chance Rain Showers - Drizzle
12° West 10 - 14 mph
Gust up to 20 mph
4 Bft Moderate breeze
0.82 mm 1002 hPa uv
Low (0.9)
Evening
18 - 00
Mostly cloudy Heavy dewMostly cloudy Drizzle Mostly cloudy
Drizzle
10° WSW 11 mph
Gust up to 15 mph
3 Bft Gentle breeze
0.03 mm 1002 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Mostly cloudy Heavy dewCloudy Drizzle Cloudy
Light rain - Drizzle
WSW 9 - 14 mph
Gust up to 19 mph
4 Bft Moderate breeze
1.79 mm 999 hPa-
Morning
06 - 12
Overcast Drizzle Overcast
Chance Rain Showers - Light rain - Drizzle
WNW 9 - 14 mph
Gust up to 18 mph
4 Bft Moderate breeze
2.57 mm 1003 hPa-
Afternoon
12 - 18
Overcast Moderate dewCloudy Light rain Overcast - Cloudy
Drizzle - Light rain
10° WNW 9 mph
Gust up to 14 mph
3 Bft Gentle breeze
0.62 mm 1010 hPa-
Evening
18 - 00
Clear Heavy dewMostly cloudy Heavy dew Partly cloudy - Clear
Drizzle - Light fog
WNW 7 mph
Gust up to 11 mph
2 Bft Light breeze
0.89 mm 1017 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
01 - 06
Mostly clear Light fog Mostly clear
Light fog
WNW 6 mph
2 Bft Light breeze
- 1023 hPa-
Morning
06 - 12
Partly cloudy Heavy dewPartly cloudy Heavy dew Mostly clear - Partly cloudy
Light fog
- 10° WNW 4 - 9 mph
Gust up to 14 mph
3 Bft Gentle breeze
- 1026 hPa uv
Low (1.3)
Afternoon
12 - 14
Partly cloudy Moderate dewMostly cloudy Moderate dew Mostly cloudy 11° WNW 10 mph
Gust up to 16 mph
3 Bft Gentle breeze
- 1027 hPa uv
Low (1.3)
Period Forecast Temperature Wind Precipitation Lightning Dewpoint Pressure Humidity UV Clouds Zicht
14 - 15 Overcast Light rain
Overcast
Light rain
15° South
4 mph South 1 Bft
Light air
- - 13°C 1002.0 hPa 89 % uv
Low (0.5)
100 % 8 miles
15 - 16 Cloudy Moderate rain
Cloudy
Moderate rain
14° South
8 mph South 3 Bft
Gentle breeze
1.41 mm - 13°C 1000.9 hPa 94 % uv
Low (0.5)
97 % 4 miles
16 - 17 Overcast Chance drizzle
Overcast
Chance drizzle
13° South
12 mph South 3 Bft
Gentle breeze
1.22 mm - 13°C 1000.0 hPa 97 %- 100 % 12 miles
17 - 18 Overcast Moderate rain
Overcast
Moderate rain
13° South
11 mph South 3 Bft
Gentle breeze
0.48 mm - 13°C 999.1 hPa 98 %- 100 % 5 miles
18 - 19 Overcast Chance drizzle
Overcast
Chance drizzle
13°
(Feels like: 11°C)
South
11 mph South 3 Bft
Gentle breeze
2.39 mm - 13°C 998.4 hPa 100 %- 100 % 10 miles
19 - 20 Overcast
Overcast
13°
(Feels like: 11°C)
South
10 mph South 3 Bft
Gentle breeze
- - 13°C 997.7 hPa 100 %- 100 % 9 miles
20 - 21 Cloudy Light rain
Cloudy
Light rain
13°
(Feels like: 11°C)
South
9 mph South 3 Bft
Gentle breeze
0.16 mm - 13°C 997.1 hPa 100 %- 95 % 6 miles
21 - 22 Mostly cloudy Light fog
Mostly cloudy
Light fog
13°
(Feels like: 11°C)
South
8 mph South 2 Bft
Light breeze
0.82 mm - 13°C 996.3 hPa 100 %- 82 % 6 miles
22 - 23 Mostly cloudy Light fog
Mostly cloudy
Light fog
12° South
7 mph South 2 Bft
Light breeze
- - 12°C 995.6 hPa 100 %- 61 % 4 miles
23 - 00 Partly cloudy Drizzle
Partly cloudy
Drizzle
12° South
7 mph South 2 Bft
Light breeze
0.05 mm - 12°C 995.7 hPa 100 %- 46 % 4 miles
Period Forecast Temperature Wind Precipitation Lightning Dewpoint Pressure Humidity UV Clouds Zicht
00 - 01 Partly cloudy Light fog
Partly cloudy
Light fog
12° South
7 mph South 2 Bft
Light breeze
0.24 mm - 12°C 995.7 hPa 100 %- 31 % 3 miles
01 - 02 Partly cloudy Light fog
Partly cloudy
Light fog
12° South
7 mph South 2 Bft
Light breeze
- - 12°C 995.7 hPa 100 %- 35 % 3 miles
02 - 03 Mostly cloudy Light fog
Mostly cloudy
Light fog
12° South
7 mph South 2 Bft
Light breeze
- - 11°C 995.2 hPa 99 %- 66 % 5 miles
03 - 04 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
11° South
7 mph South 2 Bft
Light breeze
- - 11°C 994.6 hPa 99 %- 87 % 7 miles
04 - 05 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
11° South
8 mph South 2 Bft
Light breeze
- - 11°C 993.9 hPa 98 %- 97 % 8 miles
05 - 06 Overcast Drizzle
Overcast
Drizzle
12° South
8 mph South 2 Bft
Light breeze
0.01 mm - 11°C 993.2 hPa 98 %- 99 % 9 miles
06 - 07 Overcast Chance Rain Showers
Overcast
Chance Rain Showers
12°
(Feels like: 10°C)
South
8 mph South 3 Bft
Gentle breeze
0.04 mm - 11°C 992.6 hPa 98 %- 100 % 10 miles
07 - 08 Overcast Probably showers
Overcast
Probably showers
12°
(Feels like: 10°C)
South
9 mph South 3 Bft
Gentle breeze
- - 11°C 992.2 hPa 97 %- 100 % 11 miles
08 - 09 Overcast Light rain
Overcast
Light rain
12°
(Feels like: 10°C)
South
9 mph South 3 Bft
Gentle breeze
0.24 mm - 11°C 991.7 hPa 97 %- 100 % 7 miles
09 - 10 Overcast Chance Rain Showers
Overcast
Chance Rain Showers
12°
(Feels like: 10°C)
South
9 mph South 3 Bft
Gentle breeze
1.16 mm - 12°C 991.2 hPa 100 %- 99 % 9 miles
10 - 11 Overcast Chance Rain Showers
Overcast
Chance Rain Showers
12°
(Feels like: 10°C)
South
10 mph South 3 Bft
Gentle breeze
- - 12°C 990.5 hPa 98 %- 98 % 10 miles
11 - 12 Overcast Heavy rain
Overcast
Heavy rain
12°
(Feels like: 10°C)
South
10 mph South 3 Bft
Gentle breeze
1.68 mm - 12°C 989.6 hPa 100 %- 98 % 2 miles
12 - 13 Overcast Probably showers
Overcast
Probably showers
12°
(Feels like: 10°C)
South
11 mph South 3 Bft
Gentle breeze
8.37 mm - 12°C 988.4 hPa 100 % uv
Low (0.6)
98 % 9 miles
13 - 14 Overcast Probably showers
Overcast
Probably showers
13°
(Feels like: 11°C)
South
11 mph South 3 Bft
Gentle breeze
- - 12°C 987.1 hPa 98 % uv
Low (0.7)
98 % 11 miles
14 - 15 Overcast Light rain
Overcast
Light rain
13°
(Feels like: 11°C)
South
11 mph South 3 Bft
Gentle breeze
0.16 mm 2% 12°C 986.3 hPa 96 % uv
Low (0.5)
97 % 8 miles
15 - 16 Cloudy Probably showers
Cloudy
Probably showers
13°
(Feels like: 11°C)
South
11 mph South 3 Bft
Gentle breeze
0.82 mm 8% 13°C 985.7 hPa 97 %- 97 % 11 miles
16 - 17 Cloudy Probably showers
Cloudy
Probably showers
13° South
11 mph South 3 Bft
Gentle breeze
- 14% 13°C 985.4 hPa 95 %- 96 % 11 miles
17 - 18 Cloudy Light rain
Cloudy
Light rain
13° South
10 mph South 3 Bft
Gentle breeze
0.13 mm 13% 13°C 985.2 hPa 95 %- 92 % 8 miles
18 - 19 Cloudy Probably showers
Cloudy
Probably showers
13° SW
8 mph SW 3 Bft
Gentle breeze
0.67 mm 9% 13°C 985.1 hPa 98 %- 87 % 8 miles
19 - 20 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
13° SW
8 mph SW 2 Bft
Light breeze
- 6% 12°C 985.2 hPa 98 %- 82 % 7 miles
20 - 21 Mostly cloudy Drizzle
Mostly cloudy
Drizzle
12° SW
8 mph SW 3 Bft
Gentle breeze
0.02 mm 1% 12°C 986.0 hPa 98 %- 80 % 7 miles
21 - 22 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
12° SW
9 mph SW 3 Bft
Gentle breeze
0.07 mm - 12°C 986.6 hPa 99 %- 77 % 7 miles
22 - 23 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
12°
(Feels like: 10°C)
SW
10 mph SW 3 Bft
Gentle breeze
- - 12°C 987.2 hPa 99 %- 75 % 7 miles
23 - 00 Mostly cloudy Drizzle
Mostly cloudy
Drizzle
12°
(Feels like: 10°C)
SW
10 mph SW 3 Bft
Gentle breeze
0.07 mm - 12°C 987.9 hPa 99 %- 74 % 6 miles
Period Forecast Temperature Wind Precipitation Lightning Dewpoint Pressure Humidity UV Clouds Zicht
00 - 01 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
12°
(Feels like: 10°C)
SW
9 mph SW 3 Bft
Gentle breeze
0.32 mm - 12°C 988.6 hPa 100 %- 72 % 6 miles
01 - 02 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
12° SW
9 mph SW 3 Bft
Gentle breeze
- - 12°C 989.3 hPa 100 %- 71 % 6 miles
02 - 03 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
11° SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 989.8 hPa 100 %- 70 % 6 miles
03 - 04 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
11°
(Feels like: 9°C)
SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 990.2 hPa 100 %- 69 % 6 miles
04 - 05 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
11°
(Feels like: 9°C)
SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 990.5 hPa 100 %- 74 % 6 miles
05 - 06 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
11°
(Feels like: 9°C)
SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 990.7 hPa 100 %- 87 % 6 miles
06 - 07 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
11°
(Feels like: 9°C)
SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 991.1 hPa 100 %- 96 % 7 miles
07 - 08 Overcast Chance Rain Showers
Overcast
Chance Rain Showers
11°
(Feels like: 9°C)
SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 991.7 hPa 99 %- 99 % 8 miles
08 - 09 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
11°
(Feels like: 9°C)
SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 992.0 hPa 99 %- 98 % 8 miles
09 - 10 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
11°
(Feels like: 9°C)
SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 992.4 hPa 99 %- 97 % 9 miles
10 - 11 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
11°
(Feels like: 9°C)
SW
9 mph SW 3 Bft
Gentle breeze
- - 11°C 992.7 hPa 97 %- 95 % 10 miles
11 - 12 Cloudy Drizzle
Cloudy
Drizzle
12°
(Feels like: 10°C)
SW
9 mph SW 3 Bft
Gentle breeze
0.01 mm - 11°C 993.0 hPa 95 % uv
Low (0.8)
87 % 11 miles
12 - 13 Mostly cloudy Heavy dew
Mostly cloudy
12° SW
10 mph SW 3 Bft
Gentle breeze
0.02 mm - 11°C 993.1 hPa 92 % uv
Low (1.3)
73 % 12 miles
13 - 14 Partly cloudy Heavy dew
Partly cloudy
13° SW
10 mph SW 3 Bft
Gentle breeze
- - 11°C 992.9 hPa 87 % uv
Low (1.4)
63 % 12 miles

WXSIM script (v4.11) from Leuven-Template.eu.   Forecast is created from data by WXSIM.   Graphs are drawn using Highcharts
Thanks for the scripts, code-snippets and ideas go to: Ken True from SaratogaWeather; Rob from WellingtonWeather; HENKKA from NordicWeather.

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