Harrow, United Kingdom Weather

  1. Harrow, United Kingdom Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Harrow over the next 12 hours
  7. Temperature and possibility of rain in Harrow in the coming days
  8. Rainfall in Harrow in the coming days
  9. Harrow Weather Summary
  10. Weather averages by month
  11. Harrow's weather
  12. Frequently asked questions
  13. Comments
Harrow, Weather
(Photo by Igor Bumba on Unsplash)

Current conditions

Updated:
27°C
80.6°F
°C °F

Condition: Partly Cloudy

Pressure: 1,001 hPa

Feel like: 26 °C

Temperature: 27°C

Cloud: 77%

Humidity: 42%

Wind: SW - 21 km/h

Visibility: 29.82 km

Weather forecast

Wed
05 Aug
13°C / 20°C
Overcast
Thu
06 Aug
14°C / 21°C
Overcast
Fri
07 Aug
15°C / 24°C
Mainly Clear
Sat
08 Aug
17°C / 25°C
Overcast
Sun
09 Aug
18°C / 23°C
Overcast
Hourly forecast today:
14:00 PM
13° / 27°
13° / 27°
Partly Cloudy
42% 44 km/h
15:00 PM
13° / 27°
13° / 27°
Mainly Clear
41% 51 km/h
16:00 PM
13° / 26°
13° / 26°
Partly Cloudy
46% 46 km/h
17:00 PM
13° / 25°
13° / 25°
Partly Cloudy
47% 45 km/h
18:00 PM
13° / 24°
13° / 24°
Mainly Clear
50% 46 km/h
19:00 PM
14° / 23°
14° / 23°
Mainly Clear
55% 44 km/h
20:00 PM
14° / 22°
14° / 22°
Clear Sky
62% 39 km/h
21:00 PM
15° / 21°
15° / 21°
Mainly Clear
69% 34 km/h
22:00 PM
15° / 20°
15° / 20°
Mainly Clear
75% 32 km/h
23:00 PM
16° / 20°
16° / 20°
Partly Cloudy
78% 32 km/h
00:00 AM
15° / 19°
15° / 19°
Clear Sky
76% 30 km/h

30 Day Averages and Extremes

  • Average high 24.2°C
  • Average low 15.3°C
  • Hottest day 33°C (28 July 2026)
  • Coldest day 0°C (17 August 2026)
  • Average humidity 49.63%
  • Days with precipitation 13 days
  • Highest precipitation 17 mm (29 July 2026)

Yesterday's Data

  • Max: 28°C
  • Min: 19°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Harrow over the next 12 hours

Temperature and possibility of rain in Harrow in the coming days

Rainfall in Harrow in the coming days

Harrow Climate Summary

Harrow features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 11.86ºC (53.35ºF), which is about 1.11% higher than the national average for United Kingdom. Annually, the city experiences approximately 48.55 millimeters (1.91 inches) of rainfall, spread across 123.11 rainy days, accounting for 33.73% of the year.

Longitude 51.580559
Latitude -0.341995
Yearly high temperature 14.29ºC (57.72ºF)
Yearly low temperature 7.5ºC (45.5ºF)
Hottest month July 22.35ºC (72.23ºF)
Coldest month December 3.47ºC (38.25ºF)
Yearly precip 48.55mm (1.91in)
Days with rainfall 123.11 days (33.73%)
Driest month January (87.38%)
Wettest month June (77.31%)

Weather averages by month

Month High / Low (°C) Rain
January 6.7° / 2.13° 9.18 days
February 7.57° / 2.53° 8.55 days
March 10.55° / 3.6° 7.55 days
April 14.18° / 5.49° 9.64 days
May 16.67° / 8.12° 12.55 days
June 19.71° / 10.97° 13.45 days
July 22.35° / 13.6° 13.55 days
August 21.71° / 13.81° 13.55 days
September 19.21° / 11.52° 7.73 days
October 14.87° / 9.08° 9.64 days
November 10.34° / 5.69° 8.36 days
December 7.67° / 3.47° 9.36 days

Harrow's weather

Frequently asked questions

1. What is the hottest month in Harrow?

July has the highest average monthly temperature (daily mean of 22.35ºC) and December are the coolest (daily mean of 3.47ºC).

2. What should I wear in Harrow today?

For today's warm weather in Harrow, with temperatures between 20ºC to 23ºC (68.0ºF to 73.4ºF), you might consider wearing:
- Sunscreen (if spending time outdoors)
- Comfortable sandals or sneakers
- Shorts or lightweight trousers
- T-shirt or short-sleeve blouse

Temperature

Early
15°C / 20°C
Morning
13°C / 23°C
Afternoon
13°C / 27°C
Evening
15°C / 21°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 440
  • CO 120
  • NH3 0
  • NO2 4
  • O3 64
  • PM10 5
  • PM25 3
  • SO2 0
  • CH4 1,350

Sunrise / Sunset

04:31
19:42