What is the hottest month in Cascade?

July is the warmest month in Cascade, with an average high of 85.7°F.

What is the coldest month in Cascade?

February is the coldest month in Cascade, with an average low of 18.5°F.

What month does Cascade get the most rain?

May is typically the wettest month in Cascade, with about 2.98 inches of precipitation.

What plant hardiness zone is Cascade in?

Cascade is approximately in USDA plant hardiness Zone 7a, based on the average annual extreme minimum temperature.

Has the climate in Cascade changed recently?

8.5% of Cascade'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.

Cascade, MT

Climate overview — based on NOAA 1991-2020 normals from CASCADE 5 S, MT US.

BSk Semi-arid (cold) climate 7a USDA hardiness Zone 7a

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Cascade has an annual average temperature of 47°F with about 16.9 inches of precipitation per year and 66.8 inches of snow. The warmest month is July (average high 85.7°F), and the coldest is February (average low 18.5°F). May is typically the wettest month (2.98 in) and January the driest (0.54 in). Snow typically falls from August through May.

Annual swing

39.9°F

warmest to coldest month

Heating need

6,654

HDD/yr

Cooling need

183

CDD/yr

Best time to visit Cascade

Full guide →

Climate change signal

All-time records →

31 of 366 (8.5%) of Cascade'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.

1890s		0
1900s		15
1910s		40
1920s		20
1930s		47
1940s		25
1950s		18
1960s		31
1970s		20
1980s		42
1990s		35
2000s		32
2010s		33
2020s		8

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	38.9°F	18.7°F	28.8°F	0.54 in	10.6 in	5
February	40.4°F	18.5°F	29.5°F	0.69 in	10.5 in	6
March	49.4°F	25.0°F	37.2°F	0.80 in	9.2 in	7
April	57.9°F	32.8°F	45.4°F	2.23 in	9.9 in	9
May	67.0°F	40.2°F	53.6°F	2.98 in	1.2 in	9
June	74.7°F	47.4°F	61.1°F	2.90 in	—	10
July	85.7°F	51.7°F	68.7°F	1.17 in	—	6
August	85.0°F	49.9°F	67.4°F	1.17 in	0.2 in	6
September	74.3°F	43.5°F	58.9°F	1.63 in	0.3 in	5
October	59.9°F	35.6°F	47.7°F	1.37 in	4.6 in	6
November	46.6°F	27.1°F	36.9°F	0.71 in	9.8 in	5
December	38.3°F	19.9°F	29.1°F	0.69 in	10.5 in	5