May weather forecastMillstadt, IL
May
Weather in May
May, the last month of the spring in Millstadt, is a moderately hot month, with an average temperature fluctuating between 74.8°F (23.8°C) and 57.9°F (14.4°C).Temperature
Millstadt's weather shows a temperature rise with the arrival of May, moving from an enjoyable 65.7°F (18.7°C) in April to a moderately hot 74.8°F (23.8°C). Nighttime temperature lowers to an average of 57.9°F (14.4°C) in May.Humidity
With an average relative humidity of 79%, May is the most humid month.Rainfall
May is the month with the most rainfall. Rain falls for 15.1 days and accumulates 2.95" (75mm) of precipitation.Snowfall
In Millstadt, snow does not fall in April through October.Daylight
The average length of the day in May is 14h and 17min.On the first day of the month, sunrise is at 6:02 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:18 pm CDT.
Sunshine
In May, the average sunshine in Millstadt is 9.4h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Millstadt, IL
- Average high temperature in May: 74.8°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in May: 57.9°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in May
Millstadt, IL
- Average pressure in May: 29.96"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
Millstadt, IL
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in May
Millstadt, IL
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Millstadt, IL
- Average rainfall in May: 2.95"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in May
Millstadt, IL
- Average rainfall days in May: 15.1 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in May
Millstadt, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Millstadt, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.8 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
Millstadt, IL
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Millstadt, IL
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is July (12.1 days).
Average UV index in May
Millstadt, IL
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Millstadt, IL
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in May
Millstadt, 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).





