Climateby Month

Wisconsin Dells, WI climate by month

NOAA 1991-2020 normals · 911 ft elevation

Summers in Wisconsin Dells are warm and often humid; winters are very cold and snowy. Highs peak at 83°F in July and fall to 26°F in January. Wet days are spread through the year, from about 7 to 12 a month. Normal snowfall is about 41 in a year. The most comfortable time to visit is May.

Warmest month
83°F
July normal high
Coldest month
8°F
January normal low
Wet days a year
112
37.5 in of precipitation
Snow a year
40.7 in
normal snowfall

How warm is Wisconsin Dells?

Normal highs range from 26°F in January to 83°F in July.

0°20°40°60°80°100° January: normal high 26°F (-3°C), low 8°F (-13°C) 26° 8° February: normal high 31°F (-1°C), low 11°F (-12°C) March: normal high 43°F (6°C), low 22°F (-6°C) April: normal high 57°F (14°C), low 33°F (1°C) May: normal high 69°F (21°C), low 45°F (7°C) June: normal high 79°F (26°C), low 56°F (13°C) July: normal high 83°F (28°C), low 60°F (16°C) 83° 60° August: normal high 81°F (27°C), low 57°F (14°C) September: normal high 73°F (23°C), low 49°F (9°C) October: normal high 60°F (16°C), low 37°F (3°C) November: normal high 44°F (7°C), low 26°F (-3°C) December: normal high 32°F (0°C), low 15°F (-9°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Wisconsin Dells?

May has the most wet days (about 12); the year brings about 37 in of precipitation.

January: 7 wet days February: 7 wet days 7 March: 8 wet days April: 11 wet days May: 12 wet days 12 June: 11 wet days July: 9 wet days August: 10 wet days September: 9 wet days October: 10 wet days November: 8 wet days December: 9 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How much does it snow?

Normal snowfall is 40.7 in a year, most of it in January.

January: 11.5 in of snow 11.5 February: 10.2 in of snow March: 5.9 in of snow April: 2.0 in of snow May: 0.0 in of snow 0.0 June: 0.0 in of snow July: 0.0 in of snow August: 0.0 in of snow September: 0.0 in of snow October: 0.4 in of snow November: 2.0 in of snow December: 8.7 in of snow JFMAMJJASOND

How humid is Wisconsin Dells?

Muggy days peak in July, at about 11 days.

January: 0 muggy days 0 February: 0 muggy days March: 0 muggy days April: 0 muggy days May: 1 muggy days June: 6 muggy days July: 11 muggy days 11 August: 9 muggy days September: 2 muggy days October: 0 muggy days November: 0 muggy days December: 0 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Dane Co Regional-Truax Field Airport, 40 mi SSE of the city center (the nearest airport with complete hourly records).

How much daylight?

Daylight ranges from about 9.0 hours in December to 15.4 hours in June.

January: 9.4 hours of daylight February: 10.5 hours of daylight March: 11.9 hours of daylight April: 13.4 hours of daylight May: 14.7 hours of daylight June: 15.4 hours of daylight 15.4 July: 15.1 hours of daylight August: 13.9 hours of daylight September: 12.5 hours of daylight October: 11.0 hours of daylight November: 9.7 hours of daylight December: 9.0 hours of daylight 9.0 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Wisconsin Dells, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 26°F8°F 1.3 in7 11.5 in 0 9.4 h
February 31°F11°F 1.4 in7 10.2 in 0 10.5 h
March 43°F22°F 2.3 in8 5.9 in 0 11.9 h
April 57°F33°F 4.1 in11 2.0 in 0 13.4 h
May 69°F45°F 4.4 in12 0.0 in 1 14.7 h
June 79°F56°F 5.1 in11 0.0 in 6 15.4 h
July 83°F60°F 4.0 in9 0.0 in 11 15.1 h
August 81°F57°F 4.2 in10 0.0 in 9 13.9 h
September 73°F49°F 3.8 in9 0.0 in 2 12.5 h
October 60°F37°F 2.8 in10 0.4 in 0 11.0 h
November 44°F26°F 2.2 in8 2.0 in 0 9.7 h
December 32°F15°F 1.8 in9 8.7 in 0 9.0 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Wisconsin Dells

By our comfort score, the best month is May.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 240428
Feb 300423
Mar 422514
Apr 58883
May 711591
Jun 671182
Jul 61774
Aug 62963
Sep 671461
Oct 56961
Nov 372512
Dec 260424

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Wisconsin Dells

The last spring frost typically comes around May 8, and the first fall frost around Oct 3, leaving 146 frost-free days in a typical year.

Frost and freeze dates for Wisconsin Dells
Typical date1 year in 10
Last spring frost (32°F)May 8after May 22
First fall frost (32°F)Oct 3before Sep 21
Last hard freeze (28°F)Apr 28after May 13
First hard freeze (28°F)Oct 14before Sep 30
Frost-free season146 daysunder 128 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Wisconsin Dells (USC00479319), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Wisconsin.

Hottest and coldest readings, 1991-2020

The highest reading was 102°F (July 7, 2012, and 2 other days); the lowest was -37°F (January 31, 2019).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Wisconsin Dells

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Wisconsin Dells (USC00479319), 1.3 mi S of the city center, 835 ft (76 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Madison Dane Rgnl Airport (USW00014837), 40 mi SSE of the city center, 866 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Dane Co Regional-Truax Field Airport (726410-14837), 40 mi SSE of the city center, 859 ft (52 ft lower than the city). Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).

Distances from the city center (USGS). Methodology · Report an error