Montana Climate by Month
Montana, Bulgaria
Warm summers and cold winters, with rain spread through the year.
Montana has warm summers and cold winters, with rain spread through the year. Afternoon highs range from 40°F (5°C) in January to 85°F (30°C) in July, and January nights average 26°F (-3°C). About 22 in (568 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(30°C)
- Average high, July
- Coldest nights
- 26°F(-3°C)
- Average low, January
- Rain per year
- 22 in(568 mm)
- No clear rainy season
- Humidity
- 72%
- Sunniest: July
Best and worst months in Montana
Best for weatherMay and September are the best time for weather in Montana: highs near 75°F (24°C) and about 2.2 in (55 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 42°F (5°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Montana weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 40°F(5°C) | 26°F(-3°C) | 1.5 in(37 mm) | 78% | 1.4 |
| FebFebruary | 45°F(7°C) | 29°F(-2°C) | 1.3 in(34 mm) | 81% | 2.3 |
| MarMarch | 54°F(12°C) | 35°F(2°C) | 1.7 in(44 mm) | 70% | 3.3 |
| AprApril | 64°F(18°C) | 44°F(6°C) | 2.0 in(51 mm) | 64% | 4.6 |
| MayMayBest | 74°F(23°C) | 52°F(11°C) | 2.4 in(61 mm) | 67% | 5.6 |
| JunJune | 81°F(27°C) | 58°F(15°C) | 2.5 in(63 mm) | 65% | 6.3 |
| JulJuly | 85°F(30°C) | 61°F(16°C) | 2.2 in(56 mm) | 64% | 6.4 |
| AugAugust | 85°F(30°C) | 61°F(16°C) | 1.3 in(34 mm) | 61% | 5.7 |
| SepSeptemberBest | 76°F(24°C) | 53°F(12°C) | 1.9 in(49 mm) | 68% | 4.1 |
| OctOctober | 64°F(18°C) | 45°F(7°C) | 2.1 in(54 mm) | 76% | 2.7 |
| NovNovember | 52°F(11°C) | 37°F(3°C) | 1.6 in(41 mm) | 80% | 1.5 |
| DecDecember | 42°F(5°C) | 29°F(-2°C) | 1.7 in(44 mm) | 87% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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