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:
15°C
59.0°F
°C °F

Condition: Clear Sky

Pressure: 1,021 hPa

Feel like: 15 °C

Temperature: 15°C

Cloud: 10%

Humidity: 73%

Wind: WSW - 2 km/h

Visibility: 9.56 km

Weather forecast

Wed
23 Sep
10°C / 18°C
Overcast
Thu
24 Sep
12°C / 22°C
Overcast
Fri
25 Sep
14°C / 19°C
Overcast
Sat
26 Sep
15°C / 21°C
Overcast
Sun
27 Sep
14°C / 20°C
Drizzle
Hourly forecast today:
05:00 AM
10° / 15°
10° / 15°
Clear Sky
73% 4 km/h
06:00 AM
10° / 15°
10° / 15°
Clear Sky
75% 3 km/h
07:00 AM
10° / 16°
10° / 16°
Partly Cloudy
68% 3 km/h
08:00 AM
10° / 16°
10° / 16°
Overcast
66% 6 km/h
09:00 AM
11° / 18°
11° / 18°
Overcast
63% 4 km/h
10:00 AM
11° / 19°
11° / 19°
Partly Cloudy
57% 6 km/h
11:00 AM
12° / 21°
12° / 21°
Mainly Clear
56% 13 km/h
12:00 PM
12° / 22°
12° / 22°
Mainly Clear
55% 15 km/h
13:00 PM
12° / 22°
12° / 22°
Mainly Clear
53% 16 km/h
14:00 PM
12° / 23°
12° / 23°
Mainly Clear
50% 14 km/h
15:00 PM
11° / 23°
11° / 23°
Partly Cloudy
47% 14 km/h

30 Day Averages and Extremes

  • Average high 18.6°C
  • Average low 12.2°C
  • Hottest day 24°C (13 September 2026)
  • Coldest day 0°C (05 October 2026)
  • Average humidity 65.23%
  • Days with precipitation 20 days
  • Highest precipitation 63 mm (07 September 2026)

Yesterday's Data

  • Max: 23°C
  • Min: 15°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 19ºC to 22ºC (66.2ºF to 71.6ºF), you might consider wearing:
- Light, breathable socks
- Sunglasses
- T-shirt or short-sleeve blouse
- Comfortable sandals or sneakers

Temperature

Early
10°C / 16°C
Morning
11°C / 18°C
Afternoon
11°C / 23°C
Evening
12°C / 20°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 490
  • CO 245
  • NH3 4
  • NO2 40
  • O3 9
  • PM10 20
  • PM25 14
  • SO2 1
  • CH4 1,488

Sunrise / Sunset

05:48
17:57