Wisconsin Dells, WI weather in August
In August, Wisconsin Dells sees highs around 81°F and lows around 57°F: warm, with some rain. Expect about 10 wet days. It is one of the warmest months in Wisconsin Dells. Good for outdoor plans.
- Normal high
- 81°F
- Normal low
- 57°F
- Wet days
- 10
- 4.2 in total
- Muggy days
- 9
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 82°F | 78°F |
| Normal low | 59°F | 54°F |
| Chance of a wet day | 30% | 30% |
| Sunrise / sunset | 5:48 am / 8:22 pm | 6:21 am / 7:36 pm |
| Daylight | 14.6 h | 13.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical August day
- 6 am63°Fdew point 59°F
- 9 am72°Fdew point 62°F
- Noon77°Fdew point 61°F
- 3 pm78°Fdew point 61°F
- 6 pm75°Fdew point 61°F
- 9 pm68°Fdew point 61°F
NOAA hourly normals (local standard time) from Madison Dane Rgnl Airport (40 mi away); average wind 6 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F9 of 31
- Hot dayshigh 90°F or more3 of 31
- Muggy daysdaily mean dew point 65°F or more9 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 4.2 in; a dry August brings about 2.5 in and a wet one about 5.7 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202003: average high 86°F
- Coolest August2004: average high 75°F
- Wettest August2007: 11.9 in
- Driest August2013: 0.7 in
- Highest reading98°F (August 20, 2003)
- Lowest reading36°F (August 20, 2004)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 83°F | 81°F | 73°F |
| Normal low | 60°F | 57°F | 49°F |
| Wet days | 9 | 10 | 9 |
| Comfortable days | 7 | 9 | 14 |
| Daylight | 15.1 h | 13.9 h | 12.5 h |
Highs change by -2°F from July and -8°F into September.
Nearby alternatives in August
- Cooler: Sister Bay, WI169 mi · high 75°F · 9 wet days
How Wisconsin Dells ranks in August
- Normal high304th warmest of 378 cities; 1st of 5 in Wisconsin
- Wet days231st driest of 378
- Comfortable days79th most of 341
What to pack for Wisconsin Dells in August
- A rain jacket or umbrella – rain on about 10 days
Heating and cooling
August has 29 heating degree days and 148 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Wisconsin Dells in August?
The normal high is 81°F and the normal low is 57°F. From 1991 to 2020 the hottest August reading was 98°F (August 20, 2003).
Does it rain a lot in Wisconsin Dells in August?
About 10 days in August have at least 0.01 in of precipitation, and the normal total is 4.2 in. The wettest August in 1991-2020 was in 2007 (11.9 in); the driest was in 2013 (0.7 in).
Is August a good time to visit Wisconsin Dells?
August ranks 4th of 12 months on our comfort score for Wisconsin Dells (62 out of 100). It has about 9 comfortable days and about 3 days at 90°F or hotter. The best month is May.
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).