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 signals an increase in average high-temperatures, moving from March's fresh 54.5°F (12.5°C) to a comfortable 66°F (18.9°C). Throughout the month of April, Herald expects an average low of 48.7°F (9.3°C).Humidity
In April, the average relative humidity is 77%.Rainfall
April is the month with the most rainfall. Rain falls for 11.3 days and accumulates 1.06" (27mm) of precipitation.Snowfall
In Herald, snow does not fall in April through October.Daylight
In Herald, the average length of the day in April is 13h and 13min.On the first day of April in Herald, sunrise is at 6:36 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 7:43 pm CDT.
Sunshine
In Herald, the average sunshine in April is 8.7h.UV index
The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in April interprets into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
What is the rainiest month?
How many days does it rain in April?
When it does not snow?
Does it snow in April?
How many hours of daylight does Herald have in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
Herald, IL
- Average high temperature in April: 66°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in April: 48.7°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in April
Herald, 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
Herald, IL
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in April
Herald, IL
- Average humidity in April: 77%
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in April
Herald, IL
- Average rainfall in April: 1.06"
The wettest month (with the highest rainfall) is April (1.06").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in April
Herald, IL
- Average rainfall days in April: 11.3 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is January (5 days).
Average snowfall in April
Herald, IL
- Average snowfall in April: 0"
The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Herald, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (3.3 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
Herald, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in April
Herald, IL
- Average sunshine days in April: 17.7 days
The month with the most sunshine days is October (23.4 days).
The month with the least sunshine days is May (15.8 days).
Average UV index in April
Herald, 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, November and December (UV index 2).
Average cloud cover in April
Herald, IL
- Average cloud cover in April: 41
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in April
Herald, 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).
Herald, Illinois, USA
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