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Alton, MO Climate
1991 to 2020 normals at Alton, < 0.1 mi from the center of Alton, elevation 813 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 44° | 22° | 2.96 in | 1.7 in | |
| February | 49° | 25° | 3.39 in | 0.8 in | |
| March | 58° | 34° | 4.45 in | 0.9 in | |
| April | 69° | 43° | 4.66 in | 0.0 in | |
| May | 76° | 53° | 5.57 in | 0.0 in | |
| June | 85° | 62° | 3.31 in | 0.0 in | |
| July | 88° | 66° | 4.01 in | 0.0 in | |
| August | 88° | 64° | 3.92 in | 0.0 in | |
| September | 81° | 55° | 3.46 in | 0.0 in | |
| October | 70° | 43° | 3.77 in | 0.0 in | |
| November | 57° | 33° | 4.44 in | 0.0 in | |
| December | 46° | 26° | 3.29 in | 0.8 in | |
| Year | 68° | 47.23 in | 4.2 in |
Frequently asked questions
- What is the hottest month in Alton, MO?
- July is the warmest month, with a normal high of 88°F at Alton.
- What is the coldest month in Alton, MO?
- January is the coldest month, with a normal low of 22°F.
- What is the wettest month in Alton, MO?
- May has the most precipitation on average, about 5.57 inches.