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:
12°C
53.6°F
°C °F

Condition: Clear Sky

Pressure: 1,005 hPa

Feel like: 10 °C

Temperature: 12°C

Cloud: 0%

Humidity: 77%

Wind: WSW - 10 km/h

Visibility: 27.14 km

Weather forecast

Sat
19 Sep
16°C / 20°C
Moderate Drizzle
Sun
20 Sep
17°C / 23°C
Overcast
Mon
21 Sep
16°C / 23°C
Drizzle
Tue
22 Sep
13°C / 20°C
Overcast
Wed
23 Sep
12°C / 22°C
Partly Cloudy
Hourly forecast today:
01:00 AM
8° / 12°
8° / 12°
Clear Sky
77% 21 km/h
02:00 AM
8° / 12°
8° / 12°
Clear Sky
80% 24 km/h
03:00 AM
8° / 11°
8° / 11°
Clear Sky
82% 22 km/h
04:00 AM
8° / 11°
8° / 11°
Clear Sky
82% 22 km/h
05:00 AM
8° / 11°
8° / 11°
Clear Sky
84% 21 km/h
06:00 AM
8° / 10°
8° / 10°
Clear Sky
84% 19 km/h
07:00 AM
8° / 11°
8° / 11°
Clear Sky
81% 20 km/h
08:00 AM
8° / 12°
8° / 12°
Mainly Clear
75% 23 km/h
09:00 AM
8° / 14°
8° / 14°
Mainly Clear
68% 25 km/h
10:00 AM
8° / 15°
8° / 15°
Mainly Clear
60% 26 km/h
11:00 AM
6° / 17°
6° / 17°
Clear Sky
49% 32 km/h

30 Day Averages and Extremes

  • Average high 19.53°C
  • Average low 12.37°C
  • Hottest day 26°C (05 September 2026)
  • Coldest day 0°C (30 September 2026)
  • Average humidity 63.2%
  • Days with precipitation 19 days
  • Highest precipitation 63 mm (07 September 2026)

Yesterday's Data

  • Max: 20°C
  • Min: 10°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 17ºC to 20ºC (62.6ºF to 68.0ºF), you might consider wearing:
- Light, breathable socks
- Sun hat or cap
- T-shirt or short-sleeve blouse
- Shorts or lightweight trousers

Temperature

Early
8°C / 11°C
Morning
8°C / 14°C
Afternoon
7°C / 19°C
Evening
10°C / 16°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 433
  • CO 216
  • NH3 1
  • NO2 10
  • O3 46
  • PM10 13
  • PM25 6
  • SO2 0
  • CH4 1,428

Sunrise / Sunset

05:42
18:06