Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The shift from April to May brings an increase in the average high-temperature, moving from a refreshing 66°F (18.9°C) to a warm 75.2°F (24°C). In May, Dahlgren experiences a temperature dip to an average of 58.3°F (14.6°C) at night.Humidity
With an average relative humidity of 79%, May is the most humid month.Rainfall
In Dahlgren, Illinois, in May, during 16.2 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. In Dahlgren, during the entire year, the rain falls for 143.1 days and collects up to 29.65" (753mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 16min.On the first day of May, sunrise is at 5:57 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:11 pm CDT.
Sunshine
The average sunshine in May is 9.1h.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 exposure to the Sun's UV rays for average individuals.Note: The UV index of 6 during May translates into the following guidance:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Dahlgren?
What is the most humid month?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
Does it snow in May?
What is the average length of the day in May?
What time are sunrise and sunset in May in Dahlgren?
How long on average sun shines in May?
When is the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Dahlgren, IL
- Average high temperature in May: 75.2°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in May: 58.3°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in May
Dahlgren, IL
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Dahlgren, IL
- Average wind speed in May: 8.2mph
The windiest months (with the highest average wind speed) are January, February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in May
Dahlgren, 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 (70%).
Average rainfall in May
Dahlgren, IL
- Average rainfall in May: 3.15"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in May
Dahlgren, IL
- Average rainfall days in May: 16.2 days
The month with the highest number of rainy days is May (16.2 days).
The months with the least rainy days are January and February (8.3 days).
Average snowfall in May
Dahlgren, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Dahlgren, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.8 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
Dahlgren, IL
- Average daylight in May: 14h and 2min
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 36min).
- Average sunshine in May: 9h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Dahlgren, IL
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in May
Dahlgren, 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, November and December (UV index 2).
Average cloud cover in May
Dahlgren, IL
- Average cloud cover in May: 39
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in May
Dahlgren, 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).
Dahlgren, Illinois, USA
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