What is the hottest month in International Falls?

July is the warmest month in International Falls, with an average high of 77.7°F.

What is the coldest month in International Falls?

January is the coldest month in International Falls, with an average low of -5.8°F.

What month does International Falls get the most rain?

July is typically the wettest month in International Falls, with about 3.97 inches of precipitation.

What plant hardiness zone is International Falls in?

International Falls is approximately in USDA plant hardiness Zone 4b, based on the average annual extreme minimum temperature.

Has the climate in International Falls changed recently?

14.5% of International Falls'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.

International Falls, MN

Climate overview — based on NOAA 1991-2020 normals from INTL FALLS INTL AP, MN US.

Dfb Warm-summer humid continental climate 4b USDA hardiness Zone 4b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

International Falls has an annual average temperature of 37.4°F with about 25.4 inches of precipitation per year and 73 inches of snow. The warmest month is July (average high 77.7°F), and the coldest is January (average low -5.8°F). July is typically the wettest month (3.97 in) and February the driest (0.69 in). Snow typically falls from October through May.

Pleasant months

1 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

59.9°F

warmest to coldest month

Heating need

9,924

HDD/yr

Cooling need

CDD/yr

Best time to visit International Falls

Full guide →

Climate change signal

All-time records →

53 of 366 (14.5%) of International Falls'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		6
1910s		60
1920s		41
1940s		5
1950s		39
1960s		24
1970s		22
1980s		42
1990s		37
2000s		20
2010s		39
2020s		31

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	15.7°F	-5.8°F	5.0°F	0.79 in	15.7 in	10
February	21.7°F	-2.6°F	9.5°F	0.69 in	12.6 in	9
March	35.4°F	11.8°F	23.6°F	1.02 in	7.9 in	8
April	50.1°F	26.1°F	38.1°F	1.64 in	7.0 in	9
May	64.2°F	38.1°F	51.1°F	3.06 in	0.2 in	13
June	73.5°F	48.2°F	60.8°F	3.78 in	—	14
July	77.7°F	52.0°F	64.9°F	3.97 in	—	13
August	76.0°F	49.7°F	62.8°F	2.82 in	—	11
September	66.4°F	42.0°F	54.2°F	3.00 in	0.1 in	12
October	51.2°F	31.1°F	41.1°F	2.22 in	1.6 in	13
November	34.4°F	18.1°F	26.3°F	1.39 in	12.1 in	10
December	20.8°F	2.7°F	11.8°F	0.99 in	15.8 in	11