Long-Range Weather Forecast for Alton, IL
Annual Weather Summary
November 2022 to October 2023
Winter will be colder than normal, on average, with the coldest periods in late November, early December, early to mid-January, and mid- to late February. Precipitation and snowfall will be above average in the east and below average in the west. The snowiest periods will be in late November, early to mid-January, and February. On average, April and May will feature near-normal temperatures and precipitation. Summer will be hotter and drier than normal, with the hottest periods in mid- to late June, mid-July, and early and late August. September and October will be warm, with near-normal rainfall, on average.
Free 2-Month Weather Forecast
| Dates | Weather Conditions |
|---|---|
| Jan 1-8 | Flurries, frigid |
| Jan 9-15 | Snowstorm, then sunny; bitter cold |
| Jan 16-18 | Snowy periods, chilly |
| Jan 19-22 | Sunny, cold |
| Jan 23-31 | Flurries, frigid |
| January | temperature 22° (8° below avg.) precipitation 1" (avg.) |
| Dates | Weather Conditions |
|---|---|
| Feb 1-4 | Sunny, very cold |
| Feb 5-7 | Snowstorm, cold |
| Feb 8-17 | Sunny, then snow showers; frigid |
| Feb 18-22 | Flurries, cold |
| Feb 23-28 | Snowy periods, very cold |
| February | temperature 23° (9° below avg.) precipitation 2.5" (0.5" above avg.) |
Temperature and Precipitation November 2022 to October 2023
