May weather forecastGillespie, IL
May
Weather in May
The last month of the spring, May, is a moderately hot month in Gillespie, Illinois, with an average temperature ranging between max 73.9°F (23.3°C) and min 56.7°F (13.7°C).Temperature
May sees a temperature increase, moving from a comfortable 63.9°F (17.7°C) in April to a moderately hot 73.9°F (23.3°C). During May, Gillespie observes a consistent average nighttime temperature of 56.7°F (13.7°C).Humidity
In May, the average relative humidity is 79%.Rainfall
In May, the rain falls for 13.9 days. Throughout May, 1.81" (46mm) of precipitation is accumulated. Throughout the year, in Gillespie, there are 121.4 rainfall days, and 14.72" (374mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In May, the average length of the day is 14h and 20min.On the first day of May, sunrise is at 5:59 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:19 pm CDT.
Sunshine
In May, the average sunshine is 9.3h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the UV index of 5 transforms into the following advice:
Take precautions - Protection against sunburn is recommended. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Gillespie, IL
- Average high temperature in May: 73.9°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in May: 56.7°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in May
Gillespie, IL
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Gillespie, IL
- Average wind speed in May: 7.8mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in May
Gillespie, IL
- Average humidity in May: 79%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Gillespie, IL
- Average rainfall in May: 1.81"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in May
Gillespie, IL
- Average rainfall days in May: 13.9 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in May
Gillespie, IL
- Average snowfall in May: 0"
The month with the highest snowfall is December (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Gillespie, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.3 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
Gillespie, IL
- Average daylight in May: 14h and 18min
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 months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Gillespie, IL
- Average sunshine days in May: 13.6 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in May
Gillespie, 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
Gillespie, IL
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in May
Gillespie, IL
- Average visibility in May: 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).
