May weather forecastAnnapolis, IL
May
Weather in May
May, the last month of the spring in Annapolis, is a moderately hot month, with an average temperature ranging between min 57.2°F (14°C) and max 73.8°F (23.2°C).Temperature
The start of May brings a shift in the average high-temperature, increasing from April's enjoyable 64°F (17.8°C) to a moderately hot 73.8°F (23.2°C). Annapolis, during the nights of May, experiences an average temperature drop to a moderate 57.2°F (14°C).Humidity
In May, the average relative humidity is 80%.Rainfall
In May, in Annapolis, the rain falls for 17.8 days. Throughout May, 3.03" (77mm) of precipitation is accumulated. Throughout the year, in Annapolis, Illinois, there are 147.2 rainfall days, and 27.87" (708mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day in Annapolis, Illinois, is 14h and 20min.On the first day of May, sunrise is at 5:51 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:11 pm CDT.
Sunshine
In Annapolis, the average sunshine in May is 8.8h.UV index
The months with the highest UV index in Annapolis are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 6 during May translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Annapolis, IL
- Average high temperature in May: 73.8°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in May: 57.2°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in May
Annapolis, IL
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Annapolis, IL
- Average wind speed in May: 8.2mph
The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in May
Annapolis, IL
- Average humidity in May: 80%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Annapolis, IL
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in May
Annapolis, IL
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Annapolis, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Annapolis, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Annapolis, 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: 8h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in May
Annapolis, IL
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in May
Annapolis, 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
Annapolis, IL
- Average cloud cover in May: 41
The months with the most cloud cover are January and February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Annapolis, 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).
