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:
19°C
66.2°F
°C °F

Condition: Overcast

Pressure: 1,014 hPa

Feel like: 19 °C

Temperature: 19°C

Cloud: 100%

Humidity: 79%

Wind: E - 11 km/h

Visibility: 29.36 km

Weather forecast

Wed
24 Jun
20°C / 32°C
Slight Thunderstorm
Thu
25 Jun
24°C / 33°C
Drizzle
Fri
26 Jun
21°C / 29°C
Slight Rain
Sat
27 Jun
18°C / 25°C
Slight Rain
Sun
28 Jun
14°C / 24°C
Overcast
Hourly forecast today:
02:00 AM
15° / 19°
15° / 19°
Overcast
79% 24 km/h
03:00 AM
15° / 19°
15° / 19°
Overcast
80% 19 km/h
04:00 AM
16° / 19°
16° / 19°
Overcast
81% 18 km/h
05:00 AM
16° / 19°
16° / 19°
Overcast
83% 19 km/h
06:00 AM
16° / 20°
16° / 20°
Clear Sky
81% 23 km/h
07:00 AM
17° / 21°
17° / 21°
Clear Sky
76% 19 km/h
08:00 AM
17° / 23°
17° / 23°
Mainly Clear
70% 17 km/h
09:00 AM
17° / 24°
17° / 24°
Mainly Clear
66% 18 km/h
10:00 AM
17° / 26°
17° / 26°
Clear Sky
60% 17 km/h
11:00 AM
18° / 27°
18° / 27°
Clear Sky
56% 15 km/h
12:00 PM
18° / 29°
18° / 29°
Clear Sky
52% 17 km/h

30 Day Averages and Extremes

  • Average high 23.77°C
  • Average low 15.3°C
  • Hottest day 36°C (23 June 2026)
  • Coldest day 0°C (06 July 2026)
  • Average humidity 56.93%
  • Days with precipitation 22 days
  • Highest precipitation 51 mm (10 June 2026)

Yesterday's Data

  • Max: 34°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 very hot weather in Harrow, with the high temperatures above 36ºC (96.8ºF), consider wearing:
- Sleeveless tops or vests
- UV-blocking sunglasses
- Light, natural fabrics (like cotton or linen)
- Broad-brimmed sun hat

Temperature

Early
15°C / 19°C
Morning
17°C / 24°C
Afternoon
18°C / 33°C
Evening
17°C / 30°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 446
  • CO 112
  • NH3 1
  • NO2 14
  • O3 61
  • PM10 16
  • PM25 6
  • SO2 1
  • CH4 1,470

Sunrise / Sunset

03:44
20:22