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
The onset of April brings a temperature shift, with the average high-temperature moving from a chilly 49.6°F (9.8°C) in March to a comfortable 61.3°F (16.3°C). The average nighttime temperature in Raritan lowers to a frosty 44.2°F (6.8°C) throughout April.Humidity
The average relative humidity in April in Raritan is 74%.Rainfall
In Raritan, in April, it is raining for 13.3 days, with typically 2.4" (61mm) of accumulated precipitation. In Raritan, during the entire year, the rain falls for 127.6 days and collects up to 21.02" (534mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows in Raritan. During 0.7 snowfall days, in April, Raritan aggregates 0.63" (16mm) of snow. Throughout the year, in Raritan, there are 26.4 snowfall days, and 9.06" (230mm) of snow is accumulated.Daylight
The average length of the day in April in Raritan is 13h and 20min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:28 pm. On the last day of April, sunrise is at 6:02 am and sunset at 7:58 pm CDT.
Sunshine
In Raritan, the average sunshine in April is 7.9h.UV index
In April, the average daily maximum UV index in Raritan, Illinois, is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In April, the maximum UV index of 4 translates into these guidelines:
Take precautions - Protection against sunburn is recommended. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What is the usual temperature for Raritan in April?
What is the average humidity in April in Raritan?
How many days does it rain in April in Raritan?
What is the last month it snows in Raritan?
How many hours of daylight does Raritan have in April?
What time are sunrise and sunset in April in Raritan?
How long on average sun shines in April in Raritan?
What is the UV index intensity in April in Raritan?
Average temperature in April
Raritan, IL
- Average high temperature in April: 61.3°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in April: 44.2°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in April
Raritan, IL
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in April
Raritan, IL
- Average wind speed in April: 10.5mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).
Average humidity in April
Raritan, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Raritan, IL
- Average rainfall in April: 2.4"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in April
Raritan, IL
- Average rainfall days in April: 13.3 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in April
Raritan, IL
- Average snowfall in April: 0.63"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Raritan, IL
- Average snowfall days in April: 0.7 days
The month with the highest number of snowfall days is January (8.5 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
Raritan, IL
- Average daylight in April: 13h and 2min
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 18min).
- Average sunshine in April: 7h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
Raritan, IL
- Average sunshine days in April: 15.1 days
The month with the most sunshine days is December (20 days).
The months with the least sunshine days are May and June (11.8 days).
Average UV index in April
Raritan, 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
Raritan, IL
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in April
Raritan, 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).
Raritan, Illinois, USA
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