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:
20°C
68.0°F
°C °F

Condition: Mainly Clear

Pressure: 1,016 hPa

Feel like: 19 °C

Temperature: 20°C

Cloud: 30%

Humidity: 43%

Wind: S - 4 km/h

Visibility: 18.12 km

Weather forecast

Sat
08 Aug
18°C / 30°C
Partly Cloudy
Sun
09 Aug
19°C / 26°C
Overcast
Mon
10 Aug
17°C / 25°C
Mainly Clear
Tue
11 Aug
18°C / 32°C
Clear Sky
Wed
12 Aug
19°C / 30°C
Clear Sky
Hourly forecast today:
10:00 AM
7° / 20°
7° / 20°
Mainly Clear
43% 16 km/h
11:00 AM
6° / 21°
6° / 21°
Mainly Clear
38% 18 km/h
12:00 PM
5° / 22°
5° / 22°
Mainly Clear
34% 19 km/h
13:00 PM
5° / 22°
5° / 22°
Clear Sky
32% 19 km/h
14:00 PM
5° / 23°
5° / 23°
Clear Sky
31% 16 km/h
15:00 PM
5° / 24°
5° / 24°
Clear Sky
29% 16 km/h
16:00 PM
5° / 24°
5° / 24°
Mainly Clear
28% 20 km/h
17:00 PM
5° / 24°
5° / 24°
Mainly Clear
28% 20 km/h
18:00 PM
5° / 24°
5° / 24°
Mainly Clear
29% 23 km/h
19:00 PM
5° / 23°
5° / 23°
Clear Sky
31% 23 km/h
20:00 PM
5° / 22°
5° / 22°
Clear Sky
32% 23 km/h

30 Day Averages and Extremes

  • Average high 24.1°C
  • Average low 15.2°C
  • Hottest day 33°C (28 July 2026)
  • Coldest day 0°C (20 August 2026)
  • Average humidity 50.87%
  • Days with precipitation 13 days
  • Highest precipitation 22 mm (16 August 2026)

Yesterday's Data

  • Max: 24°C
  • Min: 14°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 very hot weather in Harrow, with the high temperatures above 27ºC (80.6ºF), consider wearing:
- Open-toed sandals or light sneakers
- Lightweight t-shirt or tank top
- Loose and airy fabrics like linen or cotton
- Breathable shorts or skirts

Temperature

Early
7°C / 15°C
Morning
8°C / 18°C
Afternoon
5°C / 24°C
Evening
5°C / 21°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 441
  • CO 178
  • NH3 2
  • NO2 11
  • O3 61
  • PM10 8
  • PM25 5
  • SO2 1
  • CH4 1,396

Sunrise / Sunset

04:35
19:37