What is the hottest month in Wisconsin Dells?

July is the warmest month in Wisconsin Dells, with an average high of 82.5°F.

What is the coldest month in Wisconsin Dells?

January is the coldest month in Wisconsin Dells, with an average low of 8.0°F.

What month does Wisconsin Dells get the most rain?

June is typically the wettest month in Wisconsin Dells, with about 5.11 inches of precipitation.

What plant hardiness zone is Wisconsin Dells in?

Wisconsin Dells is approximately in USDA plant hardiness Zone 6a, based on the average annual extreme minimum temperature.

Has the climate in Wisconsin Dells changed recently?

12.6% of Wisconsin Dells'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.

Wisconsin Dells, WI

Climate overview — based on NOAA 1991-2020 normals from WISCONSIN DELLS, WI US.

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

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Wisconsin Dells has an annual average temperature of 45.7°F with about 37.5 inches of precipitation per year and 40.7 inches of snow. The warmest month is July (average high 82.5°F), and the coldest is January (average low 8.0°F). June is typically the wettest month (5.11 in) and January the driest (1.32 in). Snow typically falls from October through April.

Pleasant months

1 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

53.8°F

warmest to coldest month

Heating need

7,323

HDD/yr

Cooling need

363

CDD/yr

Best time to visit Wisconsin Dells

Full guide →

Climate change signal

All-time records →

46 of 366 (12.6%) of Wisconsin Dells'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		51
1930s		40
1940s		45
1950s		39
1960s		20
1970s		9
1980s		27
1990s		34
2000s		27
2010s		50
2020s		24

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	26.4°F	8.0°F	17.2°F	1.32 in	11.5 in	7
February	31.4°F	10.9°F	21.2°F	1.38 in	10.2 in	7
March	43.3°F	21.8°F	32.5°F	2.28 in	5.9 in	8
April	56.8°F	33.2°F	45.0°F	4.08 in	2.0 in	11
May	69.4°F	45.2°F	57.3°F	4.38 in	—	12
June	78.9°F	55.6°F	67.2°F	5.11 in	—	11
July	82.5°F	59.6°F	71.0°F	4.04 in	—	9
August	80.5°F	57.2°F	68.9°F	4.22 in	—	10
September	73.1°F	48.6°F	60.9°F	3.84 in	—	9
October	59.6°F	36.8°F	48.2°F	2.82 in	0.4 in	10
November	44.3°F	25.9°F	35.1°F	2.23 in	2.0 in	8
December	31.9°F	15.2°F	23.5°F	1.77 in	8.7 in	9