See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
20°
Mostly Cloudy
Feels Like: 21°
Min: 12°
Max: 20°
The next few hours will be overcast, with today reaching 20°C and dropping to 11°C. The coming days will be mostly clear
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:45
Sunrise
19:08
Sunset
Moon
Waxing Crescent
12:06
Moonrise
20:16
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
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Weather in Chesham today, September 15, 2026
Chesham is set for a fine, sunny day on September 15, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside.
Expect highs of 20°C and cooler readings close to 12°C. The air stays humid, with relative humidity between 60% and 88% and the peak around 23:00. Airflow remains manageable, reaching about 5.7 km/h around 18:00.
Through the afternoon cloud remains the main feature, with cover near 86% around 13:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 36.8 km, briefly nearer 24.6 km. Sunrise is at 06:45 and sunset at 19:08, giving 12 hours 22 minutes of sunlight today.
Overall, Chesham on September 15, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 20°C.
Frequently asked questions about weather in Chesham
How warm does it get in Chesham?
The warmest month in Chesham 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 Chesham?
The coldest month in Chesham 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 Chesham?
The wettest month in Chesham is October, with an average of 77mm of precipitation.
What is the driest time of year in Chesham?
The driest month in Chesham is April, with an average of 43mm of precipitation.
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