Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April's arrival brings a change in high-temperatures, moving from a refreshing 55.4°F (13°C) in March to an enjoyable 66.6°F (19.2°C). The average temperature during April nights dips to a frosty 48°F (8.9°C).Humidity
In Prairie du Rocher, the average relative humidity in April is 76%.Rainfall
In Prairie du Rocher, during April, the rain falls for 14.5 days and regularly aggregates up to 3.74" (95mm) of precipitation. Throughout the year, there are 145 rainfall days, and 32.24" (819mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Prairie du Rocher.Daylight
The average length of the day in April is 13h and 13min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:23 pm. On the last day of April, sunrise is at 6:04 am and sunset at 7:50 pm CDT.
Sunshine
In Prairie du Rocher, the average sunshine in April is 8.4h.UV index
In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 4 during April, leads to the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Prairie du Rocher in April?
What is the average humidity in April in Prairie du Rocher?
How much does it rain in April?
When it does not snow in Prairie du Rocher?
Does it snow in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index reading in April?
Average temperature in April
Prairie du Rocher, IL
- Average high temperature in April: 66.6°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (39.6°F).
- Average low temperature in April: 48°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in April
Prairie du Rocher, IL
- Average pressure in April: 29.94"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
Prairie du Rocher, IL
- Average wind speed in April: 8.9mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in April
Prairie du Rocher, IL
- Average humidity in April: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Prairie du Rocher, IL
- Average rainfall in April: 3.74"
The wettest month (with the highest rainfall) is May (3.86").
The driest months (with the least rainfall) are February and September (1.81").
Average rainfall days in April
Prairie du Rocher, IL
- Average rainfall days in April: 14.5 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in April
Prairie du Rocher, IL
- Average snowfall in April: 0"
The months with the highest snowfall are January and February (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Prairie du Rocher, 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, September and October (0 days).
Average daylight in April /
Average sunshine in April
Prairie du Rocher, IL
- Average daylight in April: 13h and 1min
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 36min).
- Average sunshine in April: 8h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in April
Prairie du Rocher, IL
- Average sunshine days in April: 14 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in April
Prairie du Rocher, 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 and December (UV index 2).
Average cloud cover in April
Prairie du Rocher, IL
- Average cloud cover in April: 42
The months with the most cloud cover are January and February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in April
Prairie du Rocher, 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).
Prairie du Rocher, Illinois, USA
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