What is the hottest month in Harrison?

July is the warmest month in Harrison, with an average high of 82.0°F.

What is the coldest month in Harrison?

February is the coldest month in Harrison, with an average low of 12.5°F.

What month does Harrison get the most rain?

May is typically the wettest month in Harrison, with about 3.78 inches of precipitation.

What plant hardiness zone is Harrison in?

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

Has the climate in Harrison changed recently?

13.1% of Harrison'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.

Harrison, MI

Climate overview — based on NOAA 1991-2020 normals from GLADWIN, MI US.

Dfb Warm-summer humid continental climate 6b USDA hardiness Zone 6b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Harrison has an annual average temperature of 45.7°F with about 34 inches of precipitation per year and 48.5 inches of snow. The warmest month is July (average high 82.0°F), and the coldest is February (average low 12.5°F). May is typically the wettest month (3.78 in) and February the driest (1.70 in). Snow typically falls from October through April.

Pleasant months

2 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

48.7°F

warmest to coldest month

Heating need

7,176

HDD/yr

Cooling need

231

CDD/yr

Best time to visit Harrison

Full guide →

Climate change signal

All-time records →

48 of 366 (13.1%) of Harrison'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		18
1900s		24
1910s		19
1920s		1
1930s		42
1940s		33
1950s		27
1960s		29
1970s		28
1980s		26
1990s		33
2000s		23
2010s		35
2020s		28

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	29.2°F	12.7°F	20.9°F	2.15 in	13.8 in	12
February	32.0°F	12.5°F	22.2°F	1.70 in	11.4 in	9
March	42.6°F	20.4°F	31.5°F	2.05 in	6.7 in	9
April	55.5°F	31.0°F	43.3°F	3.53 in	2.8 in	11
May	68.4°F	42.7°F	55.5°F	3.78 in	—	11
June	78.1°F	52.8°F	65.5°F	3.46 in	—	10
July	82.0°F	57.1°F	69.6°F	3.20 in	—	10
August	79.9°F	55.2°F	67.6°F	3.39 in	—	9
September	72.7°F	47.4°F	60.1°F	2.79 in	—	10
October	59.5°F	37.0°F	48.3°F	3.24 in	0.4 in	11
November	45.6°F	28.3°F	36.9°F	2.53 in	2.8 in	11
December	34.3°F	19.9°F	27.1°F	2.20 in	10.6 in	11