July weather forecastWinthrop Harbor, IL
July
Weather in July
July in Winthrop Harbor, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 65.3°F (18.5°C) and an average high of 77.5°F (25.3°C).Temperature
Winthrop Harbor's temperature records reveal July as the warmest month, marked by average highs of 77.5°F (25.3°C) and lows of 65.3°F (18.5°C).Humidity
In Winthrop Harbor, the average relative humidity in July is 80%.Rainfall
In Winthrop Harbor, in July, it is raining for 17 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, in Winthrop Harbor, there are 142.5 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Winthrop Harbor, the average length of the day in July is 14h and 56min.On the first day of July in Winthrop Harbor, sunrise is at 5:18 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:11 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.5h of sunshine.UV index
July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In July, the maximum UV index of 6 translates into these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Winthrop Harbor, IL
- Average high temperature in July: 77.5°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 July: 65.3°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 July
Winthrop Harbor, IL
- Average pressure in July: 29.96"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 July
Winthrop Harbor, IL
- Average wind speed in July: 7.4mph
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 July
Winthrop Harbor, IL
- Average humidity in July: 80%
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 July
Winthrop Harbor, IL
- Average rainfall in July: 2.44"
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 July
Winthrop Harbor, IL
- Average rainfall days in July: 17 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 July
Winthrop Harbor, IL
- Average snowfall in July: 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 July
Winthrop Harbor, IL
- Average snowfall days in July: 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 July /
Average sunshine in July
Winthrop Harbor, IL
- Average daylight in July: 14h 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 July: 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 July
Winthrop Harbor, IL
- Average sunshine days in July: 10.8 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 July
Winthrop Harbor, IL
- Average UV index in July: 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 July
Winthrop Harbor, IL
- Average cloud cover in July: 28
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 July
Winthrop Harbor, IL
- Average visibility in July: 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).





