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:
25°C
77.0°F
°C °F

Condition: Clear Sky

Pressure: 1,011 hPa

Feel like: 22 °C

Temperature: 25°C

Cloud: 0%

Humidity: 32%

Wind: SSW - 16 km/h

Visibility: 34.0 km

Weather forecast

Mon
07 Sep
14°C / 19°C
Drizzle
Tue
08 Sep
11°C / 19°C
Overcast
Wed
09 Sep
13°C / 17°C
Drizzle
Thu
10 Sep
15°C / 20°C
Drizzle
Fri
11 Sep
12°C / 20°C
Overcast
Hourly forecast today:
15:00 PM
7° / 25°
7° / 25°
Clear Sky
32% 35 km/h
16:00 PM
6° / 25°
6° / 25°
Clear Sky
30% 32 km/h
17:00 PM
9° / 25°
9° / 25°
Mainly Clear
36% 36 km/h
18:00 PM
10° / 23°
10° / 23°
Mainly Clear
43% 33 km/h
19:00 PM
10° / 22°
10° / 22°
Clear Sky
47% 26 km/h
20:00 PM
11° / 21°
11° / 21°
Mainly Clear
55% 23 km/h
21:00 PM
12° / 20°
12° / 20°
Overcast
61% 18 km/h
22:00 PM
13° / 20°
13° / 20°
Overcast
66% 17 km/h
23:00 PM
14° / 19°
14° / 19°
Clear Sky
72% 18 km/h
00:00 AM
14° / 19°
14° / 19°
Overcast
75% 15 km/h
01:00 AM
15° / 18°
15° / 18°
Overcast
78% 12 km/h

30 Day Averages and Extremes

  • Average high 19.43°C
  • Average low 12.8°C
  • Hottest day 26°C (25 August 2026)
  • Coldest day 0°C (19 September 2026)
  • Average humidity 64.33%
  • Days with precipitation 23 days
  • Highest precipitation 72 mm (26 August 2026)

Yesterday's Data

  • Max: 25°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 warm weather in Harrow, with temperatures between 20ºC to 23ºC (68.0ºF to 73.4ºF), you might consider wearing:
- Sun hat or cap
- Cotton or linen fabrics
- Shorts or lightweight trousers
- Sunscreen (if spending time outdoors)

Temperature

Early
10°C / 14°C
Morning
12°C / 18°C
Afternoon
7°C / 25°C
Evening
12°C / 20°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 435
  • CO 151
  • NH3 2
  • NO2 4
  • O3 88
  • PM10 9
  • PM25 4
  • SO2 0
  • CH4 1,380

Sunrise / Sunset

05:23
18:34