See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
16°
Mostly Cloudy
Feels Like: 16°
Min: 12°
Max: 20°
The next few hours will be mostly cloudy, with today reaching 20°C and dropping to 12°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:46
Sunrise
19:04
Sunset
Moon
Waxing Crescent
13:19
Moonrise
20:41
Moonset
Daily Forecast
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Thursday
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Air Quality Data Available
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Humidity
Weather in Harrow on the Hill today, September 16, 2026
Harrow on the Hill looks cloudy on September 16, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. The first half of the day looks overcast, as cloud amounts reach about 71% around 11:00. Brighter weather, if it comes, waits until later.
The temperature range runs from about 12°C up to 20°C. Relative humidity sits between 46% and 77%, reaching its peak around 23:00. A lighter breeze peaks around 14:00 near 3.8 km/h.
Expect persistent cloud later on, with amounts around 100% by 17:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 39.6 km on average, though it can drop toward 32.8 km in thicker cloud or showers. Sunrise is at 06:46 and sunset at 19:04, giving 12 hours 18 minutes of sunlight today.
Overall, Harrow on the Hill on September 16, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 20°C.
Frequently asked questions about weather in Harrow on the Hill
How warm does it get in Harrow on the Hill?
The warmest month in Harrow on the Hill is July, with average high temperatures of 22°C. The average temperature during this period is around 18°C.
How cold does it get in Harrow on the Hill?
The coldest month in Harrow on the Hill is January, with average low temperatures of 2°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Harrow on the Hill?
The wettest month in Harrow on the Hill is October, with an average of 74mm of precipitation.
What is the driest time of year in Harrow on the Hill?
The driest month in Harrow on the Hill is April, with an average of 43mm of precipitation.
