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Hourly Forecast
Daylight Hours
06:49
Sunrise
19:00
Sunset
Moon
Waxing Crescent
12:37
Moonrise
21:13
Moonset
Daily Forecast
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Air Quality Data Available
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UV Index
Humidity
Weather in Alton today, September 16, 2026
Conditions in Alton on September 16, 2026 favour clear skies, so the day opens with a fine, sunny outlook. Any interruptions to the blue should be brief rather than lasting. Expect a grey start, with morning cloud around 100% by 07:00. Outdoor plans early on should not rely on bright skies.
Expect highs of 35°C and cooler readings close to 23°C. Moisture in the air spans 44%-93%, with the highest values around 07:00. Winds stay light, near 5.5 km/h by 18:00, so the day feels still more than breezy.
Through the afternoon cloud remains the main feature, with cover near 100% around 19:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 15.7 km, briefly nearer 13.0 km. Sunrise is at 06:49 and sunset at 19:00, giving 12 hours 11 minutes of sunlight today.
In short, September 16, 2026 looks like a fine day in Alton for being outside, peaking around 35°C.
Frequently asked questions about weather in Alton
How warm does it get in Alton?
The warmest month in Alton is July, with average high temperatures of 31°C. The average temperature during this period is around 26°C.
How cold does it get in Alton?
The coldest month in Alton is January, with average low temperatures of -4°C. The average temperature during this period is around 0°C.
What is the wettest time of year in Alton?
The wettest month in Alton is May, with an average of 128mm of precipitation.
What is the driest time of year in Alton?
The driest month in Alton is December, with an average of 55mm of precipitation.
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