Weather Forecast and Radar for Alton, Missouri

Weather in Alton, MO

Alton, Missouri, United States has a mild climate year-round featuring four distinct seasons. The average temperature in the winter months of December, January and February is 2.7 °C (36.9 °F). The temperature rises to an average of 21.7 °C (71.1 °F) in the summer months of June, July and August.

Rainfall in Alton is average throughout the year, with an annual average of 824.1 millimetres (32.4 inches). The wettest months of the year are May and June, with an average rainfall of 92.6 millimetres (3.65 inches) and 106.7 millimetres (4.20 inches) respectively. The driest months are February and March, with an average rainfall of 41.1 millimetres (1.62 inches) and 44.8 millimetres (1.76 inches) respectively.

Snowfall in Alton is light compared to other areas of the United States. The average snowfall is 18.8 centimetres (7.4 inches) per year. The snowiest month is typically January, with an average snowfall of 7.6 centimetres (3 inches).

Wind in Alton is usually light, with an average speed of 8.7 kilometers per hour (5.4 miles per hour). The windiest months are usually December, January and February, with an average wind speed of 10.6 kilometers per hour (6.6 miles per hour).

Fast Facts About Alton, MO

As of 2020, the city population is 638.

Major Cities Nearby Alton, MO

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Alton, Missouri.