May weather forecastWinnebago, IL
May
Weather in May
May, the last month of the spring in Winnebago, is an agreeable month, with an average temperature fluctuating between 50.9°F (10.5°C) and 68.5°F (20.3°C).Temperature
As Winnebago transitions into May, the average high-temperature is observed to rise from a refreshing 55.9°F (13.3°C) in April to a pleasant 68.5°F (20.3°C). The nighttime temperature dips to a cool 50.9°F (10.5°C) on average during May.Humidity
In May, the average relative humidity is 78%.Rainfall
In Winnebago, during May, the rain falls for 19 days and regularly aggregates up to 3.86" (98mm) of precipitation. Throughout the year, there are 148.1 rainfall days, and 28.39" (721mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Winnebago, the average length of the day in May is 14h and 37min.On the first day of the month, sunrise is at 5:51 am and sunset at 7:56 pm. On the last day of May, sunrise is at 5:23 am and sunset at 8:26 pm CDT.
Sunshine
In Winnebago, the average sunshine in May is 8.5h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 in May translates into these instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Winnebago, IL
- Average high temperature in May: 68.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in May: 50.9°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in May
Winnebago, IL
- Average pressure in May: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Winnebago, IL
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Winnebago, IL
- Average humidity in May: 78%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in May
Winnebago, IL
- Average rainfall in May: 3.86"
The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in May
Winnebago, IL
- Average rainfall days in May: 19 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in May
Winnebago, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Winnebago, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Winnebago, IL
- Average daylight in May: 14h and 36min
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 12min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Winnebago, IL
- Average sunshine days in May: 10.2 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in May
Winnebago, IL
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in May
Winnebago, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in May
Winnebago, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
