Sister Bay, WI weather in August
Sister Bay is mild in August, with some rain: highs average 75°F and nights drop to about 57°F. Rain falls on about 9 days. This is the peak of the warm season in Sister Bay. A great month for outdoor plans.
- Normal high
- 75°F
- Normal low
- 57°F
- Wet days
- 9
- 3.0 in total
- Daylight
- 14.0 h
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 77°F | 73°F |
| Normal low | 58°F | 55°F |
| Chance of a wet day | 29% | 31% |
| Sunrise / sunset | 5:33 am / 8:16 pm | 6:09 am / 7:28 pm |
| Daylight | 14.7 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).
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)26 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain (temperature and rain only)5 of 31
- Hot dayshigh 90°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow9 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 3.0 in; a dry August brings about 2.1 in and a wet one about 3.7 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202011: average high 79°F
- Coolest August2004: average high 69°F
- Wettest August2009: 8.4 in
- Driest August2008: 0.5 in
- Highest reading91°F (August 8, 2001)
- Lowest reading41°F (August 26, 2017)
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 | 76°F | 75°F | 68°F |
| Normal low | 57°F | 57°F | 51°F |
| Wet days | 10 | 9 | 10 |
| Comfortable days | 24 | 26 | 19 |
| Daylight | 15.2 h | 14.0 h | 12.5 h |
Highs change by -1°F from July and -7°F into September.
Nearby alternatives in August
- Warmer: Milwaukee, WI153 mi · high 80°F · 10 wet days
How Sister Bay ranks in August
- Normal high353rd warmest of 378 cities; 5th of 5 in Wisconsin
- Wet days221st driest of 378
What to pack for Sister Bay in August
- A rain jacket or umbrella – rain on about 9 days
- Sunglasses and sunscreen – about 14.0 hours of daylight and highs near 75°F
Heating and cooling
August has 45 heating degree days and 83 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Sister Bay in August?
The normal high is 75°F and the normal low is 57°F. From 1991 to 2020 the hottest August reading was 91°F (August 8, 2001).
Does it rain a lot in Sister Bay in August?
About 9 days in August have at least 0.01 in of precipitation, and the normal total is 3.0 in. The wettest August in 1991-2020 was in 2009 (8.4 in); the driest was in 2008 (0.5 in).
Is August a good time to visit Sister Bay?
August ranks 2nd of 12 months on our comfort score for Sister Bay (86 out of 100). It has about 26 comfortable days (judged by temperature only). The best months are June, July and August.
Where the numbers come from
- Temperature, rain and snowfall: Washington Is (USC00478905), 16 mi NE of the city center, 686 ft (73 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snow depth: Sturgeon Bay Exp Farm (USC00478267), 24 mi SSW of the city center, 699 ft (86 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Ephraim 1NE-Wwtp (USC00472626), 2.0 mi SW of the city center, 733 ft (120 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).