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:
18°C
64.4°F
°C °F

Condition: Clear Sky

Pressure: 1,006 hPa

Feel like: 18 °C

Temperature: 18°C

Cloud: 0%

Humidity: 81%

Wind: WSW - 11 km/h

Visibility: 20.54 km

Weather forecast

Sun
21 Jun
19°C / 31°C
Slight Thunderstorm
Mon
22 Jun
23°C / 33°C
Mainly Clear
Tue
23 Jun
22°C / 31°C
Mainly Clear
Wed
24 Jun
18°C / 26°C
Overcast
Thu
25 Jun
15°C / 27°C
Overcast
Hourly forecast today:
00:00 AM
15° / 18°
15° / 18°
Clear Sky
81% 23 km/h
01:00 AM
15° / 17°
15° / 17°
Overcast
85% 27 km/h
02:00 AM
15° / 17°
15° / 17°
Partly Cloudy
86% 24 km/h
03:00 AM
15° / 17°
15° / 17°
Overcast
86% 25 km/h
04:00 AM
15° / 17°
15° / 17°
Overcast
87% 23 km/h
05:00 AM
15° / 17°
15° / 17°
Overcast
87% 23 km/h
06:00 AM
15° / 18°
15° / 18°
Overcast
84% 20 km/h
07:00 AM
15° / 19°
15° / 19°
Overcast
79% 23 km/h
08:00 AM
15° / 20°
15° / 20°
Overcast
73% 24 km/h
09:00 AM
14° / 21°
14° / 21°
Overcast
67% 24 km/h
10:00 AM
15° / 21°
15° / 21°
Overcast
65% 22 km/h

30 Day Averages and Extremes

  • Average high 21.9°C
  • Average low 14.33°C
  • Hottest day 34°C (27 June 2026)
  • Coldest day 0°C (02 July 2026)
  • Average humidity 60.67%
  • Days with precipitation 23 days
  • Highest precipitation 66 mm (05 June 2026)

Yesterday's Data

  • Max: 24°C
  • Min: 17°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 29ºC (84.2ºF), consider wearing:
- UV-protective sunglasses
- Loose and airy fabrics like linen or cotton
- Lightweight t-shirt or tank top
- Breathable shorts or skirts

Temperature

Early
15°C / 17°C
Morning
14°C / 21°C
Afternoon
13°C / 24°C
Evening
11°C / 22°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 447
  • CO 109
  • NH3 1
  • NO2 11
  • O3 35
  • PM10 5
  • PM25 3
  • SO2 0
  • CH4 1,367

Sunrise / Sunset

03:43
20:21