April weather forecastMattoon, IL
April
Weather in April
April is a refreshing spring month in Mattoon, Illinois, with an average temperature fluctuating between 62.2°F (16.8°C) and 46.2°F (7.9°C).Temperature
With the beginning of April, Mattoon's average high-temperature sees an increase, transitioning from a cool 51.1°F (10.6°C) in March to a comfortable 62.2°F (16.8°C). An average low-temperature of 46.2°F (7.9°C) marks the month of April.Humidity
In Mattoon, the average relative humidity in April is 76%.Rainfall
The month with the most rainfall is April, when the rain falls for 14.9 days and typically aggregates up to 3.31" (84mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 0.7 snowfall days, in April, Mattoon aggregates 0.08" (2mm) of snow. Throughout the year, there are 26.6 snowfall days, and 7.01" (178mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 16min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:17 pm. On the last day of April, in Mattoon, sunrise is at 5:54 am and sunset at 7:46 pm CDT.
Sunshine
The average sunshine in April is 8h.UV index
In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 4 in April leads to these guidelines:
Adopt protective measures - It is advised to guard against sun damage. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Mattoon, IL
- Average high temperature in April: 62.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in April: 46.2°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in April
Mattoon, IL
- Average pressure in April: 29.95"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 April
Mattoon, IL
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in April
Mattoon, IL
- Average humidity in April: 76%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Mattoon, IL
- Average rainfall in April: 3.31"
The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is February (1.3").
Average rainfall days in April
Mattoon, IL
- Average rainfall days in April: 14.9 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in April
Mattoon, IL
- Average snowfall in April: 0.08"
The month with the highest snowfall is December (2.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Mattoon, IL
- Average snowfall days in April: 0.7 days
The month with the highest number of snowfall days is January (8.1 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
Mattoon, 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 24min).
- Average sunshine in April: 8h and 0min
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 0min).
Average sunshine days in April
Mattoon, IL
- Average sunshine days in April: 12.9 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in April
Mattoon, IL
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Mattoon, IL
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in April
Mattoon, IL
- Average visibility in April: 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).
