What is the hottest month in Fromberg?

July is the warmest month in Fromberg, with an average high of 87.2°F.

What is the coldest month in Fromberg?

January is the coldest month in Fromberg, with an average low of 12.9°F.

What month does Fromberg get the most rain?

May is typically the wettest month in Fromberg, with about 2.25 inches of precipitation.

What plant hardiness zone is Fromberg in?

Fromberg is approximately in USDA plant hardiness Zone 6b, based on the average annual extreme minimum temperature.

Has the climate in Fromberg changed recently?

11.5% of Fromberg's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Fromberg, MT

Climate overview — based on NOAA 1991-2020 normals from BRIDGER 2 N, MT US.

BSk Semi-arid (cold) climate 6b USDA hardiness Zone 6b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Fromberg has an annual average temperature of 45.7°F with about 11.5 inches of precipitation per year and 30.3 inches of snow. The warmest month is July (average high 87.2°F), and the coldest is January (average low 12.9°F). May is typically the wettest month (2.25 in) and January the driest (0.29 in). Snow typically falls from October through May.

Annual swing

46°F

warmest to coldest month

Heating need

7,194

HDD/yr

Cooling need

255

CDD/yr

Best time to visit Fromberg

Full guide →

Climate change signal

All-time records →

42 of 366 (11.5%) of Fromberg's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1900s		7
1910s		45
1920s		24
1930s		54
1940s		24
1950s		34
1960s		16
1970s		10
1980s		35
1990s		23
2000s		37
2010s		30
2020s		27

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	35.4°F	12.9°F	24.2°F	0.29 in	5.1 in	2
February	38.9°F	15.1°F	27.0°F	0.33 in	4.5 in	2
March	50.4°F	22.4°F	36.4°F	0.47 in	3.1 in	3
April	57.7°F	29.9°F	43.8°F	1.57 in	3.5 in	6
May	67.4°F	39.6°F	53.5°F	2.25 in	0.7 in	8
June	77.3°F	47.0°F	62.1°F	1.80 in	—	8
July	87.2°F	53.1°F	70.2°F	0.83 in	—	4
August	86.3°F	50.2°F	68.3°F	0.61 in	—	5
September	75.3°F	41.5°F	58.4°F	1.15 in	—	5
October	59.7°F	31.7°F	45.7°F	1.23 in	2.0 in	5
November	45.8°F	22.2°F	34.0°F	0.60 in	4.7 in	3
December	35.9°F	14.2°F	25.1°F	0.37 in	6.7 in	3