April weather forecastSeymour, IL
April
Weather in April
April is a comfortable spring month in Seymour, Illinois, with an average temperature fluctuating between 45.5°F (7.5°C) and 61.3°F (16.3°C).Temperature
Noticing a change, the average high-temperature during April moves from March's frosty 49.3°F (9.6°C) to a comfortable 61.3°F (16.3°C). The average temperature drops to a frosty 45.5°F (7.5°C) during the night in the month of April.Humidity
In April, the average relative humidity is 74%.Rainfall
In Seymour, Illinois, in April, during 15.9 rainfall days, 3.31" (84mm) of precipitation is typically accumulated. In Seymour, during the entire year, the rain falls for 152.9 days and collects up to 29.72" (755mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 0.9 snowfall days, in April, Seymour aggregates 0.12" (3mm) of snow. Throughout the year, there are 33.9 snowfall days, and 11.81" (300mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 18min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:18 pm. On the last day of April, in Seymour, sunrise is at 5:53 am and sunset at 7:48 pm CDT.
Sunshine
In April, the average sunshine in Seymour is 8.1h.UV index
In Seymour, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In April, the UV index of 4 transforms into the following advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Experience reduced UV exposure by about half when donning a wide-brim hat. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Seymour, IL
- Average high temperature in April: 61.3°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in April: 45.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in April
Seymour, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Seymour, IL
- Average wind speed in April: 10.7mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Seymour, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Seymour, IL
- Average rainfall in April: 3.31"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days in April
Seymour, IL
- Average rainfall days in April: 15.9 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in April
Seymour, IL
- Average snowfall in April: 0.12"
The month with the highest snowfall is January (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Seymour, IL
- Average snowfall days in April: 0.9 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 April /
Average sunshine in April
Seymour, IL
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 8h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in April
Seymour, IL
- Average sunshine days in April: 11.6 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 April
Seymour, 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
Seymour, IL
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in April
Seymour, 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).
