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 coincides with a rise in the average high-temperature, moving from March's chilly 47.5°F (8.6°C) to a refreshing 59.4°F (15.2°C). The average temperature during April nights is registered at a chilly 42.8°F (6°C).Humidity
In April, the average relative humidity is 74%.Rainfall
In Blackstone, during April, the rain falls for 14.9 days and regularly aggregates up to 3.11" (79mm) of precipitation. Throughout the year, in Blackstone, there are 145 rainfall days, and 25.08" (637mm) of precipitation is accumulated.Snowfall
Months with snowfall in Blackstone are January through April, October through December. April is the last month it regularly snows in Blackstone, Illinois. During 1.6 snowfall days, in April, Blackstone aggregates 1.97" (50mm) of snow. Throughout the year, in Blackstone, there are 37.9 snowfall days, and 12.91" (328mm) of snow is accumulated.Daylight
In Blackstone, the average length of the day in April is 13h and 20min.On the first day of April, sunrise is at 6:36 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 7:51 pm CDT.
Sunshine
The average sunshine in April is 7.9h.UV index
The average daily maximum UV index in April in Blackstone is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 during April translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Blackstone?
What is the average humidity in April in Blackstone?
How much does it rain in Blackstone in April?
What is the last month it snows in Blackstone?
How many hours of daylight does Blackstone have in April?
When is the sunrise / sunset in April in Blackstone?
How long on average sun shines in April in Blackstone?
What is the UV index reading in April in Blackstone?
Average temperature in April
Blackstone, IL
- Average high temperature in April: 59.4°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in April: 42.8°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in April
Blackstone, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Blackstone, IL
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in April
Blackstone, 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 (72%).
Average rainfall in April
Blackstone, IL
- Average rainfall in April: 3.11"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (1.18").
Average rainfall days in April
Blackstone, IL
- Average rainfall days in April: 14.9 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in April
Blackstone, IL
- Average snowfall in April: 1.97"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Blackstone, IL
- Average snowfall days in April: 1.6 days
The month with the highest number of snowfall days is January (11.8 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
Blackstone, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in April
Blackstone, IL
- Average sunshine days in April: 11.9 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in April
Blackstone, IL
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Blackstone, IL
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in April
Blackstone, 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).
Blackstone, Illinois, USA
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