April weather forecastSaint Elmo, IL
April
Weather in April
April is an enjoyable spring month in Saint Elmo, Illinois, with temperature in the range of an average high of 63.5°F (17.5°C) and an average low of 46.6°F (8.1°C).Temperature
Saint Elmo in April experiences an increase in the average high-temperature, moving from March's fresh 52.2°F (11.2°C) to a comfortable 63.5°F (17.5°C). The average temperature during April nights in Saint Elmo is registered at a chilly 46.6°F (8.1°C).Humidity
In April, the average relative humidity is 77%.Rainfall
The months with the most rainfall are April and June, with an average 2.95" (75mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.3 snowfall days, in April, Saint Elmo aggregates 0.04" (1mm) of snow. Throughout the year, there are 18.9 snowfall days, and 5.24" (133mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 15min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:19 pm. On the last day of April, sunrise is at 5:57 am and sunset at 7:47 pm CDT.
Sunshine
The average sunshine in April is 8.2h.UV index
The average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 4 during April translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. When the Sun is at its strongest around midday, find shade and limit exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Saint Elmo, IL
- Average high temperature in April: 63.5°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in April: 46.6°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in April
Saint Elmo, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Saint Elmo, IL
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in April
Saint Elmo, IL
- Average humidity in April: 77%
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 April
Saint Elmo, IL
- Average rainfall in April: 2.95"
The wettest months (with the highest rainfall) are April and June (2.95").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in April
Saint Elmo, IL
- Average rainfall days in April: 14.2 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in April
Saint Elmo, IL
- Average snowfall in April: 0.04"
The month with the highest snowfall is December (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Saint Elmo, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Saint Elmo, IL
- Average daylight in April: 13h 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 April: 8h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in April
Saint Elmo, IL
- Average sunshine days in April: 13.8 days
The months with the most sunshine days are January and November (19.5 days).
The months with the least sunshine days are May and July (12.3 days).
Average UV index in April
Saint Elmo, IL
- Average UV index in April: 4
The months with the highest UV index are 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 April
Saint Elmo, IL
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in April
Saint Elmo, IL
- Average visibility in April: 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).
