Calgary vs Helena, Montana Climate
66%matchOn climate, Helena is a 66% match for Calgary. Compared with Calgary, Helena has 8°F (4°C) hotter summer days, half the summer rain and more sun.
Calgary gets 17 in (421 mm) of rain a year and Helena 11 in (271 mm). July is the warmest month in both, with highs of 76°F (25°C) in Calgary 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)
CalgaryHelenasolid = high, dashed = low
Rain (in per month)
CalgaryHelena
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Calgary | Helena | Calgary | Helena | Calgary | Helena | |
| Jan | 29°F(-1°C) | 31°F(0°C) | 8°F(-14°C) | 12°F(-11°C) | 0.4 in(9 mm) | 0.4 in(11 mm) |
| Feb | 32°F(0°C) | 35°F(2°C) | 11°F(-12°C) | 14°F(-10°C) | 0.4 in(10 mm) | 0.4 in(10 mm) |
| Mar | 39°F(4°C) | 47°F(8°C) | 17°F(-8°C) | 24°F(-4°C) | 0.6 in(16 mm) | 0.6 in(14 mm) |
| Apr | 51°F(11°C) | 56°F(13°C) | 28°F(-2°C) | 31°F(-1°C) | 1.0 in(26 mm) | 0.9 in(23 mm) |
| May | 62°F(17°C) | 66°F(19°C) | 37°F(3°C) | 40°F(4°C) | 2.1 in(54 mm) | 1.7 in(43 mm) |
| Jun | 69°F(20°C) | 74°F(24°C) | 45°F(7°C) | 47°F(9°C) | 4.1 in(104 mm) | 2.3 in(59 mm) |
| Jul | 76°F(25°C) | 85°F(29°C) | 50°F(10°C) | 53°F(12°C) | 2.2 in(57 mm) | 1.1 in(28 mm) |
| Aug | 75°F(24°C) | 85°F(29°C) | 48°F(9°C) | 51°F(11°C) | 2.4 in(61 mm) | 0.9 in(23 mm) |
| Sep | 66°F(19°C) | 74°F(23°C) | 40°F(4°C) | 43°F(6°C) | 1.7 in(43 mm) | 0.9 in(22 mm) |
| Oct | 54°F(12°C) | 59°F(15°C) | 29°F(-2°C) | 33°F(1°C) | 0.6 in(16 mm) | 0.6 in(16 mm) |
| Nov | 39°F(4°C) | 43°F(6°C) | 18°F(-8°C) | 22°F(-5°C) | 0.6 in(14 mm) | 0.4 in(11 mm) |
| Dec | 31°F(-1°C) | 31°F(0°C) | 10°F(-12°C) | 13°F(-10°C) | 0.4 in(11 mm) | 0.4 in(11 mm) |
1991–2020 averages, by calendar month.