Missoula vs Great Falls: which is sunnier?
🇺🇸 United States vs 🇺🇸 United States · 215 km apart · long-term climate normals (NASA POWER, 2001–2020)
Great Falls is the sunnier overall: about 2,659 hours of sunshine a year to Missoula's 2,308. Great Falls has the higher Sunshine Score in 2 of 12 months; the other 10 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Missoula | Great Falls | |
|---|---|---|
| Sunshine hours / year | 2,308 | 2,659 |
| Sunniest month | July (88/100) | July (89/100) |
| Nov–Feb average score | 0/100 | 0/100 |
| Jun–Aug average score | 84/100 | 86/100 |
| Rain / year | 762 mm | 473 mm |
| Peak midday UV | 8 (very high) | 8 (very high) |
Missoula vs Great Falls month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Missoula | Great Falls | Missoula | Great Falls | Missoula | Great Falls | |
| January | 0 | 0 | 1° | 0° | 79 | 24 |
| February | 0 | 0 | 2° | 1° | 68 | 25 |
| March | 0 | 0 | 6° | 7° | 78 | 28 |
| April | 20 | 28 | 11° | 12° | 69 | 54 |
| May | 66 | 68 | 18° | 18° | 74 | 69 |
| June | 78 | 80 | 22° | 23° | 77 | 80 |
| July | 88 | 89 | 29° | 30° | 24 | 32 |
| August | 87 | 88 | 29° | 28° | 31 | 35 |
| September | 85 | 87 | 23° | 21° | 38 | 41 |
| October | 34 | 37 | 13° | 13° | 64 | 36 |
| November | 0 | 0 | 5° | 5° | 78 | 25 |
| December | 0 | 0 | 0° | 0° | 82 | 24 |
The sunnier month by month: Jan even · Feb even · Mar even · Apr Great Falls · May even · Jun even · Jul even · Aug even · Sep even · Oct Great Falls · Nov even · Dec even.
When to pick which
- November–February: too close to call — Missoula averages 0/100, Great Falls 0/100. Daytime highs are similar (2°C vs 2°C). See the winter sun ranking.
- March–May: Great Falls (average score 32/100 vs 29). Daytime highs are similar (12°C vs 12°C).
- June–August: too close to call — Missoula averages 84/100, Great Falls 86/100. Daytime highs are similar (27°C vs 27°C).
- September–October: too close to call — Missoula averages 60/100, Great Falls 62/100. Daytime highs are similar (18°C vs 17°C).
Full month-by-month guides: Missoula weather by month · Great Falls weather by month · Best time to visit United States.
More comparisons: Missoula vs Spokane · Missoula vs Bozeman · Missoula vs Kalispell · Great Falls vs Billings · Great Falls vs Bozeman · Great Falls vs Kalispell · all head-to-heads