August weather forecastMilwaukee, WI
August
Weather in August
August in Milwaukee still clings to the warm clutch of summer, albeit with subtle signs of approaching fall. Winds start to pick up gradually, serving as a prelude to the cooler months to come. The sea temperature marking its highest point at 71.9°F (22.2°C) symbolizes the last throes of heat. However, the charm of lazy summer days and warm nights persists, eventually giving way to a cooler, calmer September.Temperature
The arrival of August records an average high-temperature of a still warm 77°F (25°C), closely related to the 77.7°F (25.4°C) observed in July. Milwaukee's temperature drops to an average low of 63.9°F (17.7°C) during the nights of August.Humidity
In August, the average relative humidity is 77%.Rainfall
In August, the rain falls for 8.7 days. Throughout August, 0.55" (14mm) of precipitation is accumulated. In Milwaukee, during the entire year, the rain falls for 75.6 days and collects up to 5.83" (148mm) of precipitation.Snowfall
In Milwaukee, Wisconsin, snow does not fall in May through September.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 72°F (22.2°C).Note: When considering a person's aversion to cold, factors like sunshine, wind, and atmospheric temperature are key. Swimming in 72°F (22.2°C) might be delightful. (Remember: The Olympics' swimming events have water temperatures between 77°F (25°C) and 82.4°F (28°C).)
Daylight
The average length of the day in August is 13h and 53min.On the first day of the month, sunrise is at 5:43 am and sunset at 8:12 pm. On the last day of August, sunrise is at 6:15 am and sunset at 7:27 pm CDT.
Sunshine
July and August, with an average of 10.4h of sunshine, are months with the most sunshine in Milwaukee.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 5 in August leads to these guidelines:
Put precautions into practice - Protective measures against sun-induced damage are advised. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Warning! Sand and water reflections boost the intensity of UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Milwaukee, WI
- Average high temperature in August: 77°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in August: 63.9°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in August
Milwaukee, WI
- Average pressure in August: 29.97"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Milwaukee, WI
- Average wind speed in August: 7.2mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in August
Milwaukee, WI
- Average humidity in August: 77%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in August
Milwaukee, WI
- Average rainfall in August: 0.55"
The wettest month (with the highest rainfall) is July (0.75").
The driest months (with the least rainfall) are February and December (0.28").
Average rainfall days in August
Milwaukee, WI
- Average rainfall days in August: 8.7 days
The month with the highest number of rainy days is June (9.9 days).
The months with the least rainy days are January and February (1.8 days).
Average snowfall in August
Milwaukee, WI
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Milwaukee, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Milwaukee, WI
- Average sea temperature in August: 71.9°F
The best month for swimming (with the highest average sea temperature) is August (71.9°F).
The coldest month (with the lowest average sea temperature) is February (36°F).
Average daylight in August /
Average sunshine in August
Milwaukee, WI
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 10h and 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Milwaukee, WI
- Average sunshine days in August: 20.1 days
The month with the most sunshine days is January (25.4 days).
The month with the least sunshine days is June (17.3 days).
Average UV index in August
Milwaukee, WI
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Milwaukee, WI
- Average cloud cover in August: 28
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in August
Milwaukee, WI
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
