Is Great Falls sunnier than Bozeman?

They are nearly tied: Great Falls gets about 2,659 hours of sunshine a year and Bozeman about 2,641.

Which is warmer, Great Falls or Bozeman?

Year-round daytime highs are similar: Great Falls averages 13°C (55°F), Bozeman 13°C (55°F).

Which is better in winter (November–February), Great Falls or Bozeman?

They are close in the November–February window: Great Falls averages 0/100 (about 2°C days), Bozeman 0/100 (about 1°C).

Great Falls vs Bozeman: which is sunnier?

🇺🇸 United States vs 🇺🇸 United States · 190 km apart · long-term climate normals (NASA POWER, 2001–2020)

Great Falls and Bozeman are virtually tied for annual sunshine — about 2,659 vs 2,641 hours a year. Their Sunshine Scores are within 2 points of each other in every month of the year.

Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance

	Great Falls	Bozeman
Sunshine hours / year	2,659	2,641
Sunniest month	July (89/100)	July (88/100)
Nov–Feb average score	0/100	0/100
Jun–Aug average score	86/100	85/100
Rain / year	473 mm	591 mm
Peak midday UV	8 (very high)	8 (very high)

Great Falls vs Bozeman month by month

Month	Sunshine Score		Day high °C		Rain mm
Month	Great Falls	Bozeman	Great Falls	Bozeman	Great Falls	Bozeman
January	0	0	0°	0°	24	36
February	0	0	1°	1°	25	39
March	0	0	7°	7°	28	46
April	28	27	12°	12°	54	68
May	68	67	18°	18°	69	78
June	80	79	23°	24°	80	83
July	89	88	30°	30°	32	35
August	88	88	28°	28°	35	35
September	87	87	21°	22°	41	42
October	37	36	13°	13°	36	49
November	0	0	5°	5°	25	40
December	0	0	0°	-1°	24	40

The sunnier month by month: Jan even · Feb even · Mar even · Apr even · May even · Jun even · Jul even · Aug even · Sep even · Oct even · Nov even · Dec even.

When to pick which

November–February: too close to call — Great Falls averages 0/100, Bozeman 0/100. Daytime highs are similar (2°C vs 1°C). See the winter sun ranking.
March–May: too close to call — Great Falls averages 32/100, Bozeman 31/100. Daytime highs are similar (12°C vs 12°C).
June–August: too close to call — Great Falls averages 86/100, Bozeman 85/100. Daytime highs are similar (27°C vs 27°C).
September–October: too close to call — Great Falls averages 62/100, Bozeman 62/100. Daytime highs are similar (17°C vs 18°C).

Full month-by-month guides: Great Falls weather by month · Bozeman weather by month · Best time to visit United States.

More comparisons: Great Falls vs Billings · Great Falls vs Missoula · Great Falls vs Kalispell · Bozeman vs Billings · Bozeman vs Missoula · Bozeman vs Idaho Falls · all head-to-heads