Updated: Sunday 31 August 2025 - 22:23 
Next update: Monday 01 September 2025 - 02:23 

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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Rest
of
tonight
Monday Monday
night
Tuesday Tuesday
night
Wednesday Wednesday
night
Thursday
nfg ra nbknfg ra nra ra nbkn ra
Fog Chance rain Fog late Rain likely Chance rain Chance rain Mostly Cloudy Rain likely
- <2 mm (40%) <2 mm (10%) 10 mm (70%) <5 mm (50%) 2 mm (50%) <2 mm (20%) 15 mm (80%)
Lo: 11° Hi: 20° Lo: 11° Hi: 17° Lo: 13° Hi: 18° Lo: 13° Hi: 17°
SSW
4.3496 mph SSW
SSW
6.8351 mph SSW
SSW
3.7282 mph SSW
SSW
4.3496 mph SSW
S
4.3496 mph S
SSW
9.9419 mph SSW
SSW
7.4565 mph SSW
SSW
6.2137 mph SSW
UV 3 Medium UV 2 Low UV 3 Medium UV 3 Medium
nfgRest
of
tonight
Fair to partly cloudy. Patchy light fog. Low 11°. Wind south-southwest around 7 mph.
raMondayPartly to mostly cloudy in the morning, becoming mostly cloudy in the afternoon. Patchy light fog in the morning. A slight chance of rain in the morning, then a chance of rain in the afternoon. High 20°. UV index up to 3. Wind south-southwest around 11 mph, gusting to 20 mph. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
nbknfgMonday
night
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Patchy light fog after midnight. A slight chance of rain. Low 11°. Wind south-southwest around 6 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
raTuesdayMostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Patchy light fog. A chance of rain in the morning, then rain likely in the afternoon. High 17°. UV index up to 2. Wind south-southwest around 7 mph in the morning, becoming south-southeast in the afternoon. Chance of precipitation 70 percent. Precipitation mostly around 10 mm.
nraTuesday
night
Mostly cloudy. A slight chance of rain in the evening, then a chance of rain after midnight. Low 13°. Wind south around 7 mph. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
raWednesdayCloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. A chance of rain. High 18°. UV index up to 3. Wind south-southwest around 13 mph, gusting to 21 mph, in the morning, becoming 16 mph, gusting to 23 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly around 2 mm.
nbknWednesday
night
Partly to mostly cloudy. A slight chance of rain. Low 13°. Wind south-southwest around 12 mph, gusting to 21 mph, in the evening, becoming 9 mph, gusting to 15 mph, after midnight. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
raThursdayMostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Rain likely. High 17°. UV index up to 3. Wind south-southwest around 10 mph, gusting to 17 mph. Chance of precipitation 80 percent. Precipitation mostly between 10 and 20 mm.
nfgThursday
night
Partly cloudy in the evening, becoming fair after midnight. Patchy light fog. A slight chance of rain. Low 11°. Wind southwest around 9 mph, gusting to 17 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
sctfgFridayPartly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. A slight chance of rain. High 19°. UV index up to 3. Wind southwest around 7 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
nbknFriday
night
Mostly cloudy to cloudy in the evening, becoming mostly cloudy after midnight. A slight chance of rain after midnight. Low 12°. Wind southwest around 3 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
sctSaturdayMostly cloudy in the morning, becoming partly cloudy in the afternoon. High 21°. UV index up to 4. Wind south-southeast around 2 mph in the morning, becoming 8 mph, gusting to 16 mph, in the afternoon.
nbknSaturday
night
Mostly cloudy to cloudy in the evening, becoming cloudy after midnight. A slight chance of rain after midnight. Low 15°. Wind south-southeast around 7 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Period Forecast Temperature Wind Precipitation Pressure UV
Evening
22 - 00
Mostly clear Mostly clear 16° SSW 5 mph
Gust up to 10 mph
2 Bft Light breeze
- 1002 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Mostly clear Heavy dewPartly cloudy Light fog Mostly clear - Partly cloudy
Light fog
14° - 11° SSW 8 mph
Gust up to 13 mph
2 Bft Light breeze
- 1002 hPa-
Morning
06 - 12
Mostly cloudy Light dewMostly cloudy Drizzle Mostly cloudy
Light fog - Drizzle
11° - 17° SSW 7 - 13 mph
Gust up to 20 mph
4 Bft Moderate breeze
0.1 mm 1002 hPa uv
Low (2.1)
Afternoon
12 - 18
Mostly cloudy Light rainMostly cloudy Chance Rain Showers Mostly cloudy
Chance Rain Showers - Drizzle - Light rain
17° - 20° SSW 9 - 13 mph
Gust up to 20 mph
4 Bft Moderate breeze
0.72 mm 1002 hPa uv
Medium (2.7)
Evening
18 - 00
Mostly clear Moderate dewPartly cloudy Heavy dew Partly cloudy - Mostly clear
Drizzle
18° - 13° SSW 5 - 9 mph
Gust up to 15 mph
3 Bft Gentle breeze
0.47 mm 1004 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Mostly cloudy Chance Rain ShowersMostly cloudy Chance Rain Showers Mostly cloudy
Chance Rain Showers - Light fog
13° SSW 6 mph
Gust up to 10 mph
2 Bft Light breeze
- 1005 hPa-
Morning
06 - 12
Mostly cloudy DrizzleCloudy Light rain Cloudy
Light fog - Drizzle - Light rain
12° - 15° SSW 3 - 9 mph
Gust up to 14 mph
3 Bft Gentle breeze
0.48 mm 1004 hPa uv
Low (1.7)
Afternoon
12 - 18
Mostly cloudy Light rainCloudy Moderate rain Mostly cloudy
Chance Rain Showers - Light rain
14° - 17° SSE 8 mph
Gust up to 14 mph
2 Bft Light breeze
8.17 mm 1001 hPa uv
Low (2.2)
Evening
18 - 00
Mostly cloudy Chance Rain ShowersMostly cloudy Light fog Mostly cloudy
Chance Rain Showers - Drizzle - Light fog
16° SSE SSW 6 mph
Gust up to 11 mph
2 Bft Light breeze
1.06 mm 1001 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Mostly cloudy Heavy dewCloudy Moderate rain Cloudy
Drizzle - Moderate rain
14° SSW 6 - 10 mph
3 Bft Gentle breeze
0.69 mm 1001 hPa-
Morning
06 - 12
Cloudy Heavy dewCloudy Drizzle Cloudy
Light rain - Chance Rain Showers - Drizzle
13° - 16° SSW 10 - 15 mph
Gust up to 20 mph
4 Bft Moderate breeze
3.09 mm 1000 hPa uv
Low (1.8)
Afternoon
12 - 18
Cloudy Drizzle Cloudy
Chance Rain Showers - Light rain - Probably showers - Drizzle
16° - 19° SSW 17 mph
Gust up to 23 mph
4 Bft Moderate breeze
1.65 mm 998 hPa uv
Medium (3)
Evening
18 - 00
Partly cloudy Chance Rain ShowersMostly cloudy Probably showers Partly cloudy
Probably showers - Drizzle - Chance Rain Showers
18° SSW 10 - 16 mph
Gust up to 22 mph
4 Bft Moderate breeze
0.33 mm 1002 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Partly cloudy Heavy dewCloudy Drizzle Cloudy
Chance Rain Showers - Drizzle
16° SSW 10 mph
Gust up to 16 mph
3 Bft Gentle breeze
0.02 mm 1006 hPa-
Morning
06 - 12
Partly cloudy Heavy dewCloudy Chance Rain Showers Mostly cloudy
Chance Rain Showers - Moderate rain
13° - 16° SSW 11 mph
Gust up to 17 mph
3 Bft Gentle breeze
2.63 mm 1006 hPa uv
Low (1.9)
Afternoon
12 - 18
Mostly cloudy Chance Rain ShowersCloudy Moderate rain Cloudy
Chance Rain Showers - Light rain
15° - 18° SW 11 mph
Gust up to 18 mph
3 Bft Gentle breeze
10.66 mm 1006 hPa uv
Medium (2.6)
Evening
18 - 00
Mostly clear Light fogMostly cloudy Chance Rain Showers Partly cloudy - Mostly clear
Chance Rain Showers - Drizzle - Light fog
16° SW 11 mph
Gust up to 17 mph
3 Bft Gentle breeze
0.72 mm 1009 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Mostly clear Light fogPartly cloudy Light fog Mostly clear - Partly cloudy
Light fog
13° SW 6 - 10 mph
Gust up to 15 mph
3 Bft Gentle breeze
- 1014 hPa-
Morning
06 - 12
Partly cloudy Light fogMostly cloudy Drizzle Mostly cloudy
Light fog - Drizzle
11° - 16° SW 8 mph
Gust up to 13 mph
2 Bft Light breeze
- 1018 hPa uv
Low (2.1)
Afternoon
12 - 18
Mostly cloudy Cloudy Moderate dew Mostly cloudy
Drizzle
16° - 19° SW 9 mph
Gust up to 15 mph
3 Bft Gentle breeze
0.44 mm 1019 hPa uv
Medium (2.7)
Evening
18 - 00
Cloudy Heavy dew Cloudy 19° - 14° SW 6 mph
Gust up to 11 mph
2 Bft Light breeze
- 1020 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Cloudy Heavy dewCloudy Drizzle Cloudy
Drizzle
14° SW 4 mph
1 Bft Light air
0.05 mm 1021 hPa-
Morning
06 - 12
Partly cloudy Heavy dewMostly cloudy Heavy dew Partly cloudy 12° - 16° SSE 4 mph
Gust up to 8 mph
1 Bft Light air
0.24 mm 1021 hPa uv
Medium (2.9)
Afternoon
12 - 18
Partly cloudy Light dewMostly cloudy Mostly cloudy 16° - 21° SSE 4 - 10 mph
Gust up to 17 mph
3 Bft Gentle breeze
- 1018 hPa uv
Medium (4.5)
Evening
18 - 00
Cloudy Heavy dew Cloudy 20° - 16° SSE 8 mph
Gust up to 13 mph
2 Bft Light breeze
- 1014 hPa-
Period Forecast Temperature Wind Precipitation Pressure UV
Night
00 - 06
Cloudy Heavy dewCloudy Drizzle Cloudy - Overcast
Drizzle
16° SSE ESE 8 mph
2 Bft Light breeze
0.24 mm 1010 hPa-
Morning
06 - 12
Cloudy Heavy dewCloudy Chance Rain Showers Cloudy
Chance Rain Showers
15° - 20° South 5 - 14 mph
Gust up to 18 mph
4 Bft Moderate breeze
0.17 mm 1009 hPa uv
Low (1.8)
Afternoon
12 - 18
Cloudy Drizzle Overcast - Cloudy
Chance Rain Showers - Drizzle
21° South SW 11 - 15 mph
Gust up to 21 mph
4 Bft Moderate breeze
0.06 mm 1010 hPa uv
Low (2.4)
Evening
18 - 23
Mostly cloudy Heavy dewCloudy Chance Rain Showers Mostly cloudy
Chance Rain Showers
19° - 15° SW 7 - 11 mph
Gust up to 16 mph
3 Bft Gentle breeze
0.02 mm 1014 hPa-
Period Forecast Temperature Wind Precipitation Lightning Dewpoint Pressure Humidity UV Clouds Zicht
22 - 23 Mostly clear
Mostly clear
16° SSW
4 mph SSW 1 Bft
Light air
- - 12°C 1002.0 hPa 75 %- 23 % 13 miles
23 - 00 Mostly clear
Mostly clear
15° SSW
5 mph SSW 2 Bft
Light breeze
- - 12°C 1002.3 hPa 82 %- 22 % 13 miles
Period Forecast Temperature Wind Precipitation Lightning Dewpoint Pressure Humidity UV Clouds Zicht
00 - 01 Mostly clear Light dew
Mostly clear
14° SSW
6 mph SSW 2 Bft
Light breeze
- - 12°C 1002.7 hPa 86 %- 22 % 13 miles
01 - 02 Mostly clear Moderate dew
Mostly clear
13° SSW
7 mph SSW 2 Bft
Light breeze
- - 12°C 1003.1 hPa 90 %- 23 % 13 miles
02 - 03 Mostly clear Heavy dew
Mostly clear
13° SSW
7 mph SSW 2 Bft
Light breeze
- - 12°C 1002.8 hPa 93 %- 23 % 13 miles
03 - 04 Mostly clear Heavy dew
Mostly clear
12° SSW
7 mph SSW 2 Bft
Light breeze
- - 11°C 1002.5 hPa 95 %- 23 % 12 miles
04 - 05 Partly cloudy Heavy dew
Partly cloudy
12° SSW
7 mph SSW 2 Bft
Light breeze
- - 11°C 1002.1 hPa 97 %- 30 % 9 miles
05 - 06 Partly cloudy Light fog
Partly cloudy
Light fog
11° SSW
7 mph SSW 2 Bft
Light breeze
- - 11°C 1001.6 hPa 98 %- 46 % 7 miles
06 - 07 Mostly cloudy Light fog
Mostly cloudy
Light fog
11° SSW
8 mph SSW 2 Bft
Light breeze
- - 11°C 1001.2 hPa 100 %- 61 % 7 miles
07 - 08 Mostly cloudy Light fog
Mostly cloudy
Light fog
11° SSW
8 mph SSW 3 Bft
Gentle breeze
- - 11°C 1001.1 hPa 99 %- 70 % 9 miles
08 - 09 Mostly cloudy Drizzle
Mostly cloudy
Drizzle
12° SSW
10 mph SSW 3 Bft
Gentle breeze
0.01 mm - 11°C 1001.4 hPa 95 %- 69 % 12 miles
09 - 10 Mostly cloudy Moderate dew
Mostly cloudy
13° SSW
12 mph SSW 3 Bft
Gentle breeze
0.04 mm - 12°C 1001.7 hPa 90 % uv
Low (0.8)
71 % 13 miles
10 - 11 Mostly cloudy Light dew
Mostly cloudy
15°
(Feels like: 13°C)
SSW
13 mph SSW 4 Bft
Moderate breeze
- - 12°C 1002.0 hPa 83 % uv
Low (1.5)
77 % 13 miles
11 - 12 Mostly cloudy Drizzle
Mostly cloudy
Drizzle
16° SSW
13 mph SSW 4 Bft
Moderate breeze
0.05 mm - 12°C 1002.2 hPa 76 % uv
Low (2.1)
86 % 11 miles
12 - 13 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
17° SSW
13 mph SSW 4 Bft
Moderate breeze
0.24 mm - 12°C 1002.1 hPa 73 % uv
Medium (2.6)
92 % 13 miles
13 - 14 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
18° SSW
13 mph SSW 3 Bft
Gentle breeze
- 6% 12°C 1001.8 hPa 68 % uv
Medium (2.7)
94 % 13 miles
14 - 15 Cloudy Drizzle
Cloudy
Drizzle
19° SSW
12 mph SSW 3 Bft
Gentle breeze
0.07 mm 11% 12°C 1001.6 hPa 67 % uv
Low (2.4)
92 % 11 miles
15 - 16 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
18° SSW
11 mph SSW 3 Bft
Gentle breeze
0.32 mm 10% 13°C 1001.5 hPa 70 % uv
Low (2)
89 % 13 miles
16 - 17 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
19° SSW
11 mph SSW 3 Bft
Gentle breeze
- 12% 13°C 1001.7 hPa 68 % uv
Low (1.3)
82 % 13 miles
17 - 18 Mostly cloudy Light rain
Mostly cloudy
Light rain
19° SSW
10 mph SSW 3 Bft
Gentle breeze
0.09 mm 10% 13°C 1001.7 hPa 69 % uv
Low (0.7)
68 % 10 miles
18 - 19 Partly cloudy
Partly cloudy
18° SSW
9 mph SSW 3 Bft
Gentle breeze
0.42 mm 4% 13°C 1001.9 hPa 76 %- 44 % 13 miles
19 - 20 Mostly clear
Mostly clear
17° SSW
7 mph SSW 2 Bft
Light breeze
- 1% 13°C 1002.3 hPa 80 %- 25 % 13 miles
20 - 21 Partly cloudy Drizzle
Partly cloudy
Drizzle
16° SSW
7 mph SSW 2 Bft
Light breeze
0.01 mm - 13°C 1003.3 hPa 85 %- 49 % 12 miles
21 - 22 Mostly clear Moderate dew
Mostly clear
15° SSW
6 mph SSW 2 Bft
Light breeze
0.04 mm - 13°C 1004.1 hPa 89 %- 23 % 13 miles
22 - 23 Partly cloudy Heavy dew
Partly cloudy
14° SSW
6 mph SSW 2 Bft
Light breeze
- - 13°C 1004.7 hPa 93 %- 32 % 13 miles
23 - 00 Partly cloudy Heavy dew
Partly cloudy
13° SSW
6 mph SSW 2 Bft
Light breeze
- - 13°C 1004.8 hPa 95 %- 56 % 12 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
13° SSW
6 mph SSW 2 Bft
Light breeze
- - 12°C 1004.9 hPa 96 %- 75 % 10 miles
01 - 02 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
13° SSW
6 mph SSW 2 Bft
Light breeze
- - 12°C 1005.0 hPa 97 %- 82 % 9 miles
02 - 03 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
13° SSW
5 mph SSW 2 Bft
Light breeze
- - 12°C 1004.9 hPa 98 %- 73 % 5 miles
03 - 04 Mostly cloudy Light fog
Mostly cloudy
Light fog
12° SSW
5 mph SSW 1 Bft
Light air
- - 12°C 1004.7 hPa 99 %- 61 % 5 miles
04 - 05 Partly cloudy Light fog
Partly cloudy
Light fog
12° SSW
4 mph SSW 1 Bft
Light air
- - 12°C 1004.5 hPa 99 %- 55 % 4 miles
05 - 06 Mostly cloudy Light fog
Mostly cloudy
Light fog
12° SSW
4 mph SSW 1 Bft
Light air
- - 12°C 1004.2 hPa 100 %- 61 % 4 miles
06 - 07 Mostly cloudy Light fog
Mostly cloudy
Light fog
12° SSW
4 mph SSW 1 Bft
Light air
- - 12°C 1004.0 hPa 100 %- 67 % 4 miles
07 - 08 Mostly cloudy Light fog
Mostly cloudy
Light fog
12° SSW
4 mph SSW 1 Bft
Light air
- - 11°C 1004.0 hPa 99 %- 72 % 5 miles
08 - 09 Mostly cloudy Drizzle
Mostly cloudy
Drizzle
12° SSW
6 mph SSW 2 Bft
Light breeze
0.04 mm - 12°C 1003.7 hPa 98 %- 78 % 8 miles
09 - 10 Mostly cloudy Heavy dew
Mostly cloudy
13° SSW
7 mph SSW 2 Bft
Light breeze
0.17 mm - 12°C 1003.5 hPa 95 % uv
Low (0.7)
83 % 12 miles
10 - 11 Cloudy Heavy dew
Cloudy
14° SSW
9 mph SSW 3 Bft
Gentle breeze
- - 12°C 1003.4 hPa 91 % uv
Low (1.3)
89 % 13 miles
11 - 12 Cloudy Light rain
Cloudy
Light rain
14° SSW
8 mph SSW 3 Bft
Gentle breeze
0.27 mm - 13°C 1003.2 hPa 89 % uv
Low (1.7)
93 % 7 miles
12 - 13 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
14° SSE
8 mph SSE 2 Bft
Light breeze
1.38 mm - 13°C 1002.7 hPa 92 % uv
Low (2.1)
96 % 13 miles
13 - 14 Cloudy Chance Rain Showers
Cloudy
Chance Rain Showers
15° SSE
8 mph SSE 2 Bft
Light breeze
- - 13°C 1001.9 hPa 89 % uv
Low (2.2)
96 % 13 miles
14 - 15 Cloudy Moderate rain
Cloudy
Moderate rain
15° SSE
7 mph SSE 2 Bft
Light breeze
1.11 mm - 14°C 1001.1 hPa 91 % uv
Low (1.9)
91 % 3 miles
15 - 16 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
15° SSE
7 mph SSE 2 Bft
Light breeze
5.55 mm - 14°C 1000.4 hPa 99 % uv
Low (1.8)
81 % 7 miles
16 - 17 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
15° SSE
7 mph SSE 2 Bft
Light breeze
- - 14°C 1000.1 hPa 96 % uv
Low (1.3)
72 % 12 miles
17 - 18 Mostly cloudy Light rain
Mostly cloudy
Light rain
15° SSE
6 mph SSE 2 Bft
Light breeze
0.13 mm - 14°C 1000.0 hPa 93 % uv
Low (0.7)
70 % 9 miles
18 - 19 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
15° SSE
6 mph SSE 2 Bft
Light breeze
0.67 mm - 15°C 1000.1 hPa 95 %- 69 % 12 miles
19 - 20 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
15° SSE
5 mph SSE 2 Bft
Light breeze
- - 14°C 1000.4 hPa 95 %- 70 % 12 miles
20 - 21 Mostly cloudy Drizzle
Mostly cloudy
Drizzle
15° SSE
5 mph SSE 2 Bft
Light breeze
0.07 mm - 14°C 1000.9 hPa 94 %- 73 % 10 miles
21 - 22 Mostly cloudy Chance Rain Showers
Mostly cloudy
Chance Rain Showers
14° SSW
5 mph SSW 2 Bft
Light breeze
0.32 mm - 14°C 1001.2 hPa 96 %- 77 % 9 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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