Mahnomen, MN

Climate overview — based on NOAA 1991-2020 normals from MAHNOMEN, MN US.

Dfb Warm-summer humid continental climate 5a USDA hardiness Zone 5a

Year-round temperatures (°F)

-10° 10° 30° 50° 70° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Mahnomen has an annual average temperature of 39.9°F with about 26.4 inches of precipitation per year. The warmest month is July (average high 78.5°F), and the coldest is January (average low -2.5°F). June is typically the wettest month (4.72 in) and February the driest (0.73 in).

Pleasant months
3 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
61.8°F
warmest to coldest month
Heating need
9,180
Cooling need
138

Best time to visit Mahnomen

Full guide →

Climate change signal

All-time records →

58 of 366 (15.8%) of Mahnomen'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.

1920s
20
1930s
41
1940s
0
1950s
0
1960s
38
1970s
54
1980s
78
1990s
57
2010s
35
2020s
43

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 15.2°F -2.5°F 6.3°F 0.79 in
February 21.3°F 1.5°F 11.4°F 0.73 in
March 34.4°F 15.2°F 24.8°F 1.08 in
April 51.9°F 29.9°F 40.9°F 1.71 in
May 66.0°F 43.3°F 54.6°F 3.15 in
June 74.2°F 53.5°F 63.8°F 4.72 in
July 78.5°F 57.6°F 68.1°F 3.76 in
August 78.1°F 55.0°F 66.5°F 3.44 in
September 69.2°F 46.6°F 57.9°F 2.76 in
October 53.5°F 34.4°F 43.9°F 2.26 in
November 34.1°F 19.5°F 26.8°F 0.96 in
December 21.5°F 5.6°F 13.6°F 1.05 in

Climate twins of Mahnomen

Why these? →

The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).

Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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