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Custer, MT Climate
1991 to 2020 normals at Hysham, 19 mi from the center of Custer, elevation 2669 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 35° | 12° | 0.61 in | 8.3 in | |
| February | 39° | 15° | 0.58 in | 5.4 in | |
| March | 51° | 24° | 0.80 in | 5.6 in | |
| April | 61° | 33° | 1.72 in | 2.5 in | |
| May | 70° | 43° | 2.47 in | 0.8 in | |
| June | 79° | 52° | 2.22 in | 0.0 in | |
| July | 88° | 58° | 1.51 in | 0.0 in | |
| August | 86° | 55° | 1.16 in | 0.0 in | |
| September | 75° | 46° | 1.40 in | 0.1 in | |
| October | 60° | 34° | 1.38 in | 2.7 in | |
| November | 47° | 23° | 0.59 in | 4.2 in | |
| December | 36° | 15° | 0.48 in | 7.5 in | |
| Year | 60° | 14.92 in | 37.1 in |
Frequently asked questions
- What is the hottest month in Custer, MT?
- July is the warmest month, with a normal high of 88°F at Hysham.
- What is the coldest month in Custer, MT?
- January is the coldest month, with a normal low of 12°F.
- What is the wettest month in Custer, MT?
- May has the most precipitation on average, about 2.47 inches.