April weather forecastJohnsonville, IL
April
Weather in April
April is an enjoyable spring month in Johnsonville, Illinois, with an average temperature ranging between min 47.5°F (8.6°C) and max 64.4°F (18°C).Temperature
April comes with an increase, with the average high-temperature moving from a cool 53.2°F (11.8°C) in March to a refreshing 64.4°F (18°C). In April, Johnsonville records an average nighttime temperature of 47.5°F (8.6°C).Humidity
The average relative humidity in April is 77%.Rainfall
The month with the most rainfall in Johnsonville, Illinois, is April, when the rain falls for 15.7 days and typically aggregates up to 4.88" (124mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows in Johnsonville. During 0.7 snowfall days, in April, Johnsonville aggregates 0.12" (3mm) of snow. In Johnsonville, during the entire year, snow falls for 22.8 days and aggregates up to 7.09" (180mm) of snow.Daylight
In April, the average length of the day in Johnsonville is 13h and 14min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:17 pm. On the last day of April, in Johnsonville, Illinois, sunrise is at 5:57 am and sunset at 7:45 pm CDT.
Sunshine
In Johnsonville, Illinois, the average sunshine in April is 8.4h.UV index
In Johnsonville, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 in April translates into these instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Stay sun-safe with clothing that is both closely woven and worn loosely. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Johnsonville, IL
- Average high temperature in April: 64.4°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in April: 47.5°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in April
Johnsonville, 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
Johnsonville, IL
- Average wind speed in April: 9.8mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in April
Johnsonville, IL
- Average humidity in April: 77%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Johnsonville, IL
- Average rainfall in April: 4.88"
The wettest month (with the highest rainfall) is April (4.88").
The driest months (with the least rainfall) are February and September (2.09").
Average rainfall days in April
Johnsonville, IL
- Average rainfall days in April: 15.7 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in April
Johnsonville, IL
- Average snowfall in April: 0.12"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Johnsonville, IL
- Average snowfall days in April: 0.7 days
The month with the highest number of snowfall days is January (7.1 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
Johnsonville, IL
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in April
Johnsonville, IL
- Average sunshine days in April: 12 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (9 days).
Average UV index in April
Johnsonville, IL
- Average UV index in April: 4
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 April
Johnsonville, IL
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in April
Johnsonville, 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).
