What is the hottest month in Harrison?

July is the warmest month in Harrison, with an average high of 81.5°F.

What is the coldest month in Harrison?

January is the coldest month in Harrison, with an average low of 10.0°F.

What month does Harrison get the most rain?

June is typically the wettest month in Harrison, with about 4.65 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?

17.2% 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, WI

Climate overview — based on NOAA 1991-2020 normals from APPLETON, WI 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 45.6°F with about 33.2 inches of precipitation per year and 49.4 inches of snow. The warmest month is July (average high 81.5°F), and the coldest is January (average low 10.0°F). June is typically the wettest month (4.65 in) and February the driest (1.13 in). Snow typically falls from October through April.

Pleasant months

3 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

53.7°F

warmest to coldest month

Heating need

7,365

HDD/yr

Cooling need

381

CDD/yr

Best time to visit Harrison

Full guide →

Climate change signal

All-time records →

63 of 366 (17.2%) 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		1
1900s		8
1910s		47
1920s		3
1930s		38
1940s		32
1950s		23
1960s		23
1970s		12
1980s		29
1990s		33
2000s		34
2010s		46
2020s		37

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	25.4°F	10.0°F	17.7°F	1.36 in	12.6 in	9
February	29.1°F	11.7°F	20.4°F	1.13 in	11.2 in	9
March	40.6°F	22.1°F	31.4°F	1.92 in	7.2 in	9
April	54.0°F	33.9°F	44.0°F	3.24 in	4.0 in	12
May	67.2°F	46.4°F	56.8°F	3.64 in	0.1 in	12
June	77.0°F	56.6°F	66.8°F	4.65 in	—	12
July	81.5°F	61.3°F	71.4°F	3.78 in	—	11
August	79.3°F	59.8°F	69.5°F	3.58 in	—	11
September	71.9°F	50.8°F	61.3°F	3.18 in	—	10
October	57.8°F	39.3°F	48.6°F	2.84 in	0.3 in	11
November	43.4°F	27.6°F	35.5°F	2.07 in	2.4 in	9
December	30.7°F	16.8°F	23.8°F	1.76 in	11.6 in	10