May weather forecastEffner, IL
May
Weather in May
May, the last month of the spring in Effner, is an agreeable month, with temperature in the range of an average high of 71.4°F (21.9°C) and an average low of 54.5°F (12.5°C).Temperature
Effner's transition into May sees a rise in the average high-temperature, advancing from a moderate 59.4°F (15.2°C) in April to an agreeable 71.4°F (21.9°C). An average nighttime temperature of 54.5°F (12.5°C) is recorded during May.Humidity
In May, the average relative humidity is 77%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.5 days and typically aggregates up to 2.64" (67mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 5:47 am and sunset at 7:46 pm. On the last day of May, sunrise is at 5:20 am and sunset at 8:14 pm CDT.
Sunshine
In Effner, the average sunshine in May is 8.7h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Make use of precautions - Suggestions to resist sunburn are communicated. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Effner, IL
- Average high temperature in May: 71.4°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in May: 54.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Effner, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Effner, IL
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
Effner, IL
- Average humidity in May: 77%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Effner, IL
- Average rainfall in May: 2.64"
The wettest month (with the highest rainfall) is May (2.64").
The driest months (with the least rainfall) are January and February (0.79").
Average rainfall days in May
Effner, IL
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in May
Effner, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Effner, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.3 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
Effner, IL
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 42min
The months with the most sunshine are June and July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Effner, IL
- Average sunshine days in May: 11 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in May
Effner, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Effner, IL
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 34).
Average visibility in May
Effner, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).





