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Wisconsin Dells, Wisconsin climate

Dfb Warm-summer humid continental

Wisconsin Dells has a strongly seasonal cool-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 28°C, while the coldest is January averaging around −14°C at night. Precipitation totals about 976 mm a year and is strongly seasonal — June alone averages 142 mm while January barely receives 33 mm. Winters bring significant snowfall (109 cm of snow per year on average).

☀️ Summers

Warm

Highs near 28°C in July.

About 10 days a year above 32 °C

❄️ Winters

Very cold

Lows near −14°C in January.

About 168 freezing nights a year

🌧️ Rain & snow

Moderate rainfall

About 976 mm of rain a year, plus 109 cm of snow.

Snow falls through the winter months

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+0.7 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Wisconsin Dells climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	−3	0	7	14	21	26	28	27	23	16	7	1
Avg temp (°C)	−8	−6	0	7	14	19	22	20	16	9	2	−5
Avg low (°C)	−14	−12	−6	0	7	12	15	13	9	2	−4	−10
Precipitation (mm)	33	34	56	101	109	142	119	116	95	74	56	42
Snowfall (cm)	29	26	15	6	—	—	—	—	—	1	6	26

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	−3	0	7	14	21	26
Avg temp (°C)	−8	−6	0	7	14	19
Avg low (°C)	−14	−12	−6	0	7	12
Precipitation (mm)	33	34	56	101	109	142
Snowfall (cm)	29	26	15	6	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	28	27	23	16	7	1
Avg temp (°C)	22	20	16	9	2	−5
Avg low (°C)	15	13	9	2	−4	−10
Precipitation (mm)	119	116	95	74	56	42
Snowfall (cm)	—	—	—	1	6	26

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	8	7	9	11	13	12	10	10	10	10	8	9
Days with high ≥ 32°C (days)	—	—	—	—	0.5	2	4	2	0.8	—	—	—
Days with low ≤ 0°C (days)	30	27	26	15	3	0.1	—	—	2	12	23	29
Days with snowfall ≥ 2.5 cm (days)	4	3	2	0.8	—	—	—	—	—	0.1	0.7	3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	8	7	9	11	13	12
Days with high ≥ 32°C (days)	—	—	—	—	0.5	2
Days with low ≤ 0°C (days)	30	27	26	15	3	0.1
Days with snowfall ≥ 2.5 cm (days)	4	3	2	0.8	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	10	10	10	10	8	9
Days with high ≥ 32°C (days)	4	2	0.8	—	—	—
Days with low ≤ 0°C (days)	—	—	2	12	23	29
Days with snowfall ≥ 2.5 cm (days)	—	—	—	0.1	0.7	3

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	65	63	64	66	66	60	52	53	52	63	66	66
Relative humidity (%)	90	88	80	77	77	78	76	75	74	77	82	89
Wind speed (mph)	8.8	9.0	8.4	8.3	7.0	6.0	5.5	5.3	6.2	7.1	7.4	7.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	65	63	64	66	66	60
Relative humidity (%)	90	88	80	77	77	78
Wind speed (mph)	8.8	9.0	8.4	8.3	7.0	6.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	52	53	52	63	66	66
Relative humidity (%)	76	75	74	77	82	89
Wind speed (mph)	5.5	5.3	6.2	7.1	7.4	7.7

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Baraboo Wwtp, a weather station, about 19 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →