May weather forecastAnnawan, IL
May
Weather in May
The last month of the spring, May, is an agreeable month in Annawan, Illinois, with temperature in the range of an average low of 53.6°F (12°C) and an average high of 70.7°F (21.5°C).Temperature
An escalation in the average high-temperature is seen with the onset of May, moving from a moderate 59.2°F (15.1°C) in April to an agreeable 70.7°F (21.5°C). An average nighttime temperature of 53.6°F (12°C) is witnessed in Annawan throughout May.Humidity
The average relative humidity in May is 78%.Rainfall
May is the month with the most rainfall in Annawan, Illinois. Rain falls for 18.3 days and accumulates 4.45" (113mm) of precipitation.Snowfall
In Annawan, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 32min.On the first day of May, sunrise is at 5:55 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:26 pm CDT.
Sunshine
In Annawan, the average sunshine in May is 8.8h.UV index
In May, the average daily maximum UV index in Annawan is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In May, the maximum UV index of 5 translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Annawan, IL
- Average high temperature in May: 70.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in May: 53.6°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in May
Annawan, IL
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Annawan, IL
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Annawan, IL
- Average humidity in May: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Annawan, IL
- Average rainfall in May: 4.45"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").
Average rainfall days in May
Annawan, IL
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in May
Annawan, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Annawan, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (11.4 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
Annawan, 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 12min).
- Average sunshine in May: 8h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Annawan, IL
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in May
Annawan, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Annawan, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in May
Annawan, 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).
