May weather forecastHarvel, IL
May
Weather in May
May, the last month of the spring in Harvel, is an agreeable month, with an average temperature fluctuating between 56.8°F (13.8°C) and 73.2°F (22.9°C).Temperature
With the onset of May, Harvel's average high-temperature sees a rise, moving from April's comfortable 63.3°F (17.4°C) to a pleasant 73.2°F (22.9°C). May brings with it a nighttime average temperature of 56.8°F (13.8°C) in Harvel.Humidity
The average relative humidity in May in Harvel is 79%.Rainfall
In Harvel, in May, during 17.8 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 145.5 rainfall days, and 27.44" (697mm) of precipitation is accumulated.Snowfall
In Harvel, Illinois, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 21min.On the first day of May in Harvel, sunrise is at 5:58 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:18 pm CDT.
Sunshine
The average sunshine in May is 9.3h.UV index
In Harvel, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the maximum UV index of 5 transforms into these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Harvel, IL
- Average high temperature in May: 73.2°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in May: 56.8°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in May
Harvel, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Harvel, IL
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in May
Harvel, IL
- Average humidity in May: 79%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Harvel, IL
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is June (3.5").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in May
Harvel, IL
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (7.4 days).
Average snowfall in May
Harvel, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Harvel, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.4 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
Harvel, IL
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Harvel, IL
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in May
Harvel, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Harvel, IL
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July and September (Cloud cover 29).
Average visibility in May
Harvel, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
