Opheim, MT

Climate overview — based on NOAA 1991-2020 normals from OPHEIM 10 N, MT US.

BSk Semi-arid (cold) climate 5b USDA hardiness Zone 5b

Year-round temperatures (°F)

20° 40° 60° 80° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Opheim has an annual average temperature of 39.1°F with about 14.4 inches of precipitation per year and 33 inches of snow. The warmest month is August (average high 81.3°F), and the coldest is January (average low 0.8°F). June is typically the wettest month (3.70 in) and January the driest (0.27 in). Snow typically falls from September through May.

Annual swing
54.5°F
warmest to coldest month
Heating need
9,333
Cooling need
21

Best time to visit Opheim

Full guide →

Climate change signal

All-time records →

44 of 366 (12%) of Opheim'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.

1950s
2
1960s
69
1970s
37
1980s
99
1990s
63
2000s
44
2010s
38
2020s
14

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 21.6°F 0.8°F 11.2°F 0.27 in 4.5 in 3
February 25.7°F 3.9°F 14.8°F 0.37 in 6.2 in 3
March 38.1°F 14.9°F 26.5°F 0.43 in 5.1 in 3
April 53.8°F 26.2°F 40.0°F 0.91 in 2.5 in 5
May 65.4°F 36.1°F 50.8°F 2.09 in 0.9 in 7
June 73.1°F 45.7°F 59.4°F 3.70 in 11
July 81.1°F 50.3°F 65.7°F 2.25 in 7
August 81.3°F 48.6°F 64.9°F 1.57 in 6
September 70.4°F 38.8°F 54.6°F 1.39 in 0.2 in 6
October 54.3°F 27.8°F 41.1°F 0.82 in 1.2 in 4
November 37.1°F 15.3°F 26.2°F 0.36 in 5.3 in 3
December 24.8°F 4.1°F 14.4°F 0.27 in 7.1 in 3

Climate twins of Opheim

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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