April weather forecastHerrick, IL
April
Weather in April
April in Herrick, Illinois, is a comfortable spring month, with an average temperature ranging between min 46.6°F (8.1°C) and max 63.5°F (17.5°C).Temperature
Herrick experiences a temperature shift with the start of April, with average high-temperatures moving from a cool 52.2°F (11.2°C) in March to a comfortable 63.5°F (17.5°C). Throughout April in Herrick, Illinois, a steady low-temperature average of 46.6°F (8.1°C) is noted.Humidity
The average relative humidity in April is 77%.Rainfall
The months with the most rainfall are April and June, with an average 2.95" (75mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows in Herrick, Illinois. During 0.3 snowfall days, in April, Herrick aggregates 0.04" (1mm) of snow. In Herrick, Illinois, during the entire year, snow falls for 18.9 days and aggregates up to 5.24" (133mm) of snow.Daylight
In April, the average length of the day in Herrick is 13h and 16min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:20 pm. On the last day of April, sunrise is at 5:57 am and sunset at 7:48 pm CDT.
Sunshine
In Herrick, the average sunshine in April is 8.2h.UV index
In Herrick, Illinois, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 4 in April translates into these instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Herrick, IL
- Average high temperature in April: 63.5°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in April: 46.6°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in April
Herrick, 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
Herrick, IL
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in April
Herrick, IL
- Average humidity in April: 77%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Herrick, IL
- Average rainfall in April: 2.95"
The wettest months (with the highest rainfall) are April and June (2.95").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in April
Herrick, IL
- Average rainfall days in April: 14.2 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in April
Herrick, IL
- Average snowfall in April: 0.04"
The month with the highest snowfall is December (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Herrick, 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 and September (0 days).
Average daylight in April /
Average sunshine in April
Herrick, IL
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in April
Herrick, IL
- Average sunshine days in April: 13.8 days
The months with the most sunshine days are January and November (19.5 days).
The months with the least sunshine days are May and July (12.3 days).
Average UV index in April
Herrick, 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
Herrick, IL
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in April
Herrick, 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).
