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
An increase in the average high-temperature marks April, moving from March's cool 51.3°F (10.7°C) to an enjoyable 63.1°F (17.3°C). Frederick registers a consistent average low-temperature of 45.9°F (7.7°C) during April.Humidity
In Frederick, the average relative humidity in April is 74%.Rainfall
In Frederick, during April, the rain falls for 15.3 days and regularly aggregates up to 3.27" (83mm) of precipitation. In Frederick, during the entire year, the rain falls for 142.2 days and collects up to 27.95" (710mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Frederick. April is the last month it regularly snows. During 0.8 snowfall days, in April, Frederick aggregates 0.12" (3mm) of snow. Throughout the year, there are 31.2 snowfall days, and 11.85" (301mm) of snow is accumulated.Daylight
In Frederick, the average length of the day in April is 13h and 18min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:26 pm. On the last day of April, in Frederick, sunrise is at 6:01 am and sunset at 7:56 pm CDT.
Sunshine
In April, the average sunshine is 8.1h.UV index
In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 4 in April leads to these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Frederick?
What is the average humidity in April in Frederick?
How many days does it rain in April in Frederick?
What is the last month it snows in Frederick?
What is the average length of the day in April in Frederick?
What time are sunrise and sunset in April in Frederick?
How many hours of sunshine does Frederick have in April?
How high is the UV index in April in Frederick?
Average temperature in April
Frederick, IL
- Average high temperature in April: 63.1°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (32.7°F).
- Average low temperature in April: 45.9°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in April
Frederick, 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 (29.91"Hg).
Average wind speed in April
Frederick, IL
- Average wind speed in April: 10.1mph
The windiest months (with the highest average wind speed) are January, February and April (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in April
Frederick, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Frederick, IL
- Average rainfall in April: 3.27"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is December (1.61").
Average rainfall days in April
Frederick, IL
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in April
Frederick, IL
- Average snowfall in April: 0.12"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Frederick, IL
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is January (10.1 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
Frederick, 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 24min).
- Average sunshine in April: 8h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in April
Frederick, IL
- Average sunshine days in April: 11.8 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in April
Frederick, 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
Frederick, IL
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 30).
Average visibility in April
Frederick, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Frederick, Illinois, USA
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