Climate Data Alton
Illinois, United States
Monthly Averages. Elevation: 152m.
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- -10°
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Best Time to Visit: Jun, Aug, Sep. Rainiest: May (103 mm). View current weather →
969 mm
31 °C
Jul -7 °C
Jan 13 km/h
Alton has a mild climate with cool winters (Jan -7°C) and warm summers (Jul 31°C). Annual rainfall totals 969mm.
Monthly Averages
High Low Precipitation
Monthly Wind Speed
km/h
Frequently Asked Questions
What is the climate like in Alton?
Alton has an average annual temperature of 12°C with 969mm of rainfall per year. The warmest month is Jul (31°C) and the coldest is Jan (-7°C).
What is the hottest month in Alton?
The hottest month in Alton is Jul, with an average high of 31°C.
How much rain does Alton get?
Alton receives 969mm of precipitation annually. The wettest month is May (103mm) and the driest is Jan (47mm).
When is the best time to visit Alton?
The best time to visit Alton is during Jun, Aug, Sep, when temperatures are comfortable and rainfall is relatively low.
Data: WorldClim 2.1