Cheyenne vs Helena, Montana Climate
68%matchOn climate, Helena is a 68% match for Cheyenne. Compared with Cheyenne, Helena has the same summer highs, less sun and 4°F (2°C) colder winter nights.
Cheyenne gets 13 in (342 mm) of rain a year and Helena 11 in (271 mm). July is the warmest month in both, with highs of 84°F (29°C) in Cheyenne and 85°F (29°C) in Helena.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
CheyenneHelenasolid = high, dashed = low
Rain (in per month)
CheyenneHelena
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Cheyenne | Helena | Cheyenne | Helena | Cheyenne | Helena | |
| Jan | 41°F(5°C) | 31°F(0°C) | 18°F(-8°C) | 12°F(-11°C) | 0.3 in(8 mm) | 0.4 in(11 mm) |
| Feb | 42°F(5°C) | 35°F(2°C) | 18°F(-8°C) | 14°F(-10°C) | 0.4 in(10 mm) | 0.4 in(10 mm) |
| Mar | 49°F(10°C) | 47°F(8°C) | 24°F(-4°C) | 24°F(-4°C) | 0.9 in(24 mm) | 0.6 in(14 mm) |
| Apr | 56°F(13°C) | 56°F(13°C) | 30°F(-1°C) | 31°F(-1°C) | 1.4 in(35 mm) | 0.9 in(23 mm) |
| May | 65°F(19°C) | 66°F(19°C) | 39°F(4°C) | 40°F(4°C) | 2.3 in(59 mm) | 1.7 in(43 mm) |
| Jun | 77°F(25°C) | 74°F(24°C) | 48°F(9°C) | 47°F(9°C) | 1.9 in(49 mm) | 2.3 in(59 mm) |
| Jul | 84°F(29°C) | 85°F(29°C) | 55°F(13°C) | 53°F(12°C) | 1.8 in(45 mm) | 1.1 in(28 mm) |
| Aug | 82°F(28°C) | 85°F(29°C) | 53°F(12°C) | 51°F(11°C) | 1.5 in(37 mm) | 0.9 in(23 mm) |
| Sep | 74°F(23°C) | 74°F(23°C) | 45°F(7°C) | 43°F(6°C) | 1.2 in(31 mm) | 0.9 in(22 mm) |
| Oct | 60°F(15°C) | 59°F(15°C) | 33°F(1°C) | 33°F(1°C) | 0.8 in(21 mm) | 0.6 in(16 mm) |
| Nov | 48°F(9°C) | 43°F(6°C) | 23°F(-5°C) | 22°F(-5°C) | 0.5 in(13 mm) | 0.4 in(11 mm) |
| Dec | 40°F(4°C) | 31°F(0°C) | 17°F(-8°C) | 13°F(-10°C) | 0.4 in(10 mm) | 0.4 in(11 mm) |
1991–2020 averages, by calendar month.