As of 22:44 BST

Weather in South Harrow

+21°

South Harrow, Saturday, 8 August, 22:44

Overcast. Feels like 20°C. High 27°C, low 11°C.

Pressure1016 mb

Wind3 mph S

Humidity49%

Visibility6.2 mi

Dew point9°C

Detailed hourly forecast

Sun, 09+15 ° /32 °

+32 °

South Harrow, Sunday, 9 August

Overcast. High 32°C, low 15°C.

Pressure1013 mb

Wind1 mph W

Humidity21%

Visibility6.2 mi

Dew point3°C

Mon, 10+12 ° /26 °

+26 °

South Harrow, Monday, 10 August

Overcast. High 26°C, low 12°C.

Pressure1020 mb

Wind9 mph NW

Humidity31%

Visibility6.2 mi

Dew point5°C

Tue, 11+16 ° /26 °

+26 °

South Harrow, Tuesday, 11 August

Clear sky. High 26°C, low 16°C.

Pressure1025 mb

Wind10 mph E

Humidity34%

Visibility6.2 mi

Dew point7°C

Wed, 12+18 ° /32 °

+32 °

South Harrow, Wednesday, 12 August

Overcast. High 32°C, low 18°C.

Pressure1023 mb

Wind6 mph SE

Humidity19%

Visibility6.2 mi

Dew point3°C

Thu, 13+21 ° /38 °

+38 °

South Harrow, Thursday, 13 August

Clear sky. High 38°C, low 21°C.

Pressure1018 mb

Wind9 mph SE

Humidity12%

Visibility—

Dew point0°C

Fri, 14+21 ° /34 °

+34 °

South Harrow, Friday, 14 August

Overcast. High 34°C, low 21°C.

Pressure1016 mb

Wind12 mph W

Humidity32%

Visibility—

Dew point11°C

Sat, 15+19 ° /31 °

+31 °

South Harrow, Saturday, 15 August

Overcast. High 31°C, low 19°C.

Pressure1014 mb

Wind15 mph N

Humidity36%

Visibility—

Dew point11°C

Sun, 16+17 ° /24 °

0.3

+24 °

South Harrow, Sunday, 16 August

Light rain. High 24°C, low 17°C.

Pressure1017 mb

Wind10 mph NE

Humidity50%

Visibility—

Dew point12°C

Mon, 17+18 ° /20 °

0.3

+20 °

South Harrow, Monday, 17 August

Light rain. High 20°C, low 18°C.

Pressure1014 mb

Wind12 mph SW

Humidity51%

Visibility—

Dew point9°C

Tue, 18+16 ° /26 °

0.2

+26 °

South Harrow, Tuesday, 18 August

Light rain. High 26°C, low 16°C.

Pressure1012 mb

Wind14 mph NW

Humidity37%

Visibility—

Dew point7°C

Wed, 19+14 ° /24 °

+24 °

South Harrow, Wednesday, 19 August

Partly cloudy. High 24°C, low 14°C.

Pressure1014 mb

Wind11 mph W

Humidity31%

Visibility—

Dew point3°C

Thu, 20+14 ° /25 °

+25 °

South Harrow, Thursday, 20 August

Overcast. High 25°C, low 14°C.

Pressure1012 mb

Wind9 mph NE

Humidity33%

Visibility—

Dew point5°C

Fri, 21+14 ° /24 °

0.5

+24 °

South Harrow, Friday, 21 August

Light rain. High 24°C, low 14°C.

Pressure1013 mb

Wind11 mph N

Humidity35%

Visibility—

Dew point6°C

Sat, 22+16 ° /23 °

1.8

+23 °

South Harrow, Saturday, 22 August

Light rain. High 23°C, low 16°C.

Pressure1019 mb

Wind10 mph NE

Humidity37%

Visibility—

Dew point6°C

Sun, 23+14 ° /24 °

+24 °

South Harrow, Sunday, 23 August

Clear sky. High 24°C, low 14°C.

Pressure1020 mb

Wind8 mph NE

Humidity35%

Visibility—

Dew point5°C

Questions about the month ahead

How accurate is a month-long forecast?

The first 16 days come from weather models — highly reliable for the first 3–5 days, gradually less so after that. Days 17 to 30 for South Harrow are built from climate averages over the last 60 years, so they show typical weather for those dates rather than a specific forecast.

What does "above average" mean?

We compare the forecast with the climate average for exactly the same calendar days, calculated from 60 years of observations. The difference shows how the coming month compares with a typical one.

Where do the 66-year records come from?

These are real historical extremes recorded in South Harrow since 1960: the highest and lowest temperature for each calendar date, with the year it happened.

How often is the 30-day forecast updated?

The forecast portion refreshes every hour. The climate portion is based on long-term data and stays stable.