August weather forecastWinthrop Harbor, IL
August
Weather in August
August, the last month of the summer in Winthrop Harbor, is also a moderately hot month, with an average temperature ranging between min 64.8°F (18.2°C) and max 77°F (25°C).Temperature
Winthrop Harbor, Illinois, experiences an average high-temperature of a still warm 77°F (25°C) in August, marking an insignificant shift from 77.5°F (25.3°C) in July. An average nighttime temperature of 64.8°F (18.2°C) is observed in Winthrop Harbor during August.Humidity
In Winthrop Harbor, Illinois, the average relative humidity in August is 79%.Rainfall
The months with the most rainfall are June and August, with an average 2.68" (68mm) of precipitation.Snowfall
May through September are months without snowfall in Winthrop Harbor.Daylight
The average length of the day in August in Winthrop Harbor is 13h and 51min.On the first day of August, sunrise is at 5:44 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:26 pm CDT.
Sunshine
July and August, with an average of 10.5h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Winthrop Harbor, IL
- Average high temperature in August: 77°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in August: 64.8°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in August
Winthrop Harbor, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Winthrop Harbor, IL
- Average wind speed in August: 7.3mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in August
Winthrop Harbor, IL
- Average humidity in August: 79%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in August
Winthrop Harbor, IL
- Average rainfall in August: 2.68"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in August
Winthrop Harbor, IL
- Average rainfall days in August: 15.7 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in August
Winthrop Harbor, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Winthrop Harbor, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Winthrop Harbor, IL
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 10h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Winthrop Harbor, IL
- Average sunshine days in August: 11.6 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in August
Winthrop Harbor, IL
- Average UV index in August: 6
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Winthrop Harbor, IL
- Average cloud cover in August: 27
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in August
Winthrop Harbor, IL
- 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).
