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
With the beginning of April, Hartsville's average high-temperature sees an increase, transitioning from a cool 55°F (12.8°C) in March to an enjoyable 66.4°F (19.1°C). During April nights, Hartsville records an average temperature of 48.7°F (9.3°C).Humidity
In April, the average relative humidity is 77%.Rainfall
The month with the most rainfall in Hartsville is April, when the rain falls for 16.6 days and typically aggregates up to 4.8" (122mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 0.6 snowfall days, in April, Hartsville aggregates 0.16" (4mm) of snow. Throughout the year, in Hartsville, there are 17.5 snowfall days, and 6.5" (165mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 11min.On the first day of April, sunrise is at 6:38 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 7:43 pm CDT.
Sunshine
The average sunshine in April in Hartsville is 8.6h.UV index
In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during April translates into the following guidance:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Hartsville?
What is the average humidity in April in Hartsville?
What is the wettest month in Hartsville?
How much does it rain in Hartsville in April?
What is the last month it snows in Hartsville?
How many hours of daylight does Hartsville have in April?
When are sunrise and sunset in April in Hartsville?
How long on average sun shines in April in Hartsville?
How high is the UV index in April in Hartsville?
Average temperature in April
Hartsville, IL
- Average high temperature in April: 66.4°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in April: 48.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in April
Hartsville, IL
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Hartsville, IL
- Average wind speed in April: 9.3mph
The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in April
Hartsville, IL
- Average humidity in April: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Hartsville, IL
- Average rainfall in April: 4.8"
The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in April
Hartsville, IL
- Average rainfall days in April: 16.6 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in April
Hartsville, IL
- Average snowfall in April: 0.16"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Hartsville, IL
- Average snowfall days in April: 0.6 days
The month with the highest number of snowfall days is January (5.3 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
Hartsville, IL
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in April: 8h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in April
Hartsville, IL
- Average sunshine days in April: 11.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in April
Hartsville, 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
Hartsville, IL
- Average cloud cover in April: 41
The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in April
Hartsville, 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).
Hartsville, Illinois, USA
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