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:
21°C
69.8°F
°C °F

Condition: Clear Sky

Pressure: 1,016 hPa

Feel like: 19 °C

Temperature: 21°C

Cloud: 9%

Humidity: 46%

Wind: SSW - 8 km/h

Visibility: 26.06 km

Weather forecast

Fri
25 Sep
12°C / 18°C
Overcast
Sat
26 Sep
14°C / 22°C
Drizzle
Sun
27 Sep
12°C / 19°C
Moderate Drizzle
Mon
28 Sep
15°C / 25°C
Moderate Drizzle
Tue
29 Sep
18°C / 22°C
Moderate Drizzle
Hourly forecast today:
14:00 PM
9° / 21°
9° / 21°
Clear Sky
46% 20 km/h
15:00 PM
9° / 21°
9° / 21°
Clear Sky
46% 19 km/h
16:00 PM
10° / 21°
10° / 21°
Clear Sky
48% 21 km/h
17:00 PM
10° / 21°
10° / 21°
Clear Sky
50% 24 km/h
18:00 PM
10° / 20°
10° / 20°
Clear Sky
54% 23 km/h
19:00 PM
11° / 19°
11° / 19°
Clear Sky
60% 26 km/h
20:00 PM
12° / 17°
12° / 17°
Clear Sky
69% 23 km/h
21:00 PM
11° / 17°
11° / 17°
Clear Sky
72% 18 km/h
22:00 PM
11° / 16°
11° / 16°
Clear Sky
71% 18 km/h
23:00 PM
11° / 15°
11° / 15°
Clear Sky
74% 15 km/h
00:00 AM
11° / 15°
11° / 15°
Clear Sky
76% 13 km/h

30 Day Averages and Extremes

  • Average high 18.7°C
  • Average low 12.17°C
  • Hottest day 25°C (28 September 2026)
  • Coldest day 0°C (07 October 2026)
  • Average humidity 67.97%
  • Days with precipitation 20 days
  • Highest precipitation 51 mm (12 September 2026)

Yesterday's Data

  • Max: 21°C
  • Min: 12°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:
- Sunglasses
- Cotton or linen fabrics
- Sun hat or cap
- Light, breathable socks

Temperature

Early
9°C / 12°C
Morning
8°C / 14°C
Afternoon
9°C / 21°C
Evening
11°C / 17°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 436
  • CO 181
  • NH3 1
  • NO2 8
  • O3 72
  • PM10 7
  • PM25 3
  • SO2 0
  • CH4 1,373

Sunrise / Sunset

05:52
17:52