April weather forecastAnnawan, IL
April
Weather in April
April is a mild spring month in Annawan, Illinois, with an average temperature fluctuating between 42.4°F (5.8°C) and 59.2°F (15.1°C).Temperature
April witnesses an increase in the average high-temperature, moving from a frosty 47.1°F (8.4°C) in March to a moderate 59.2°F (15.1°C). During April, the temperature in Annawan tends to dip to an average of 42.4°F (5.8°C) at night.Humidity
The average relative humidity in April in Annawan is 74%.Rainfall
In Annawan, in April, during 16.3 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. Throughout the year, there are 147.2 rainfall days, and 29.17" (741mm) of precipitation is accumulated.Snowfall
Months with snowfall in Annawan are January through April, October through December. April is the last month it regularly snows in Annawan. During 1.2 snowfall days, in April, Annawan aggregates 1.02" (26mm) of snow. Throughout the year, in Annawan, there are 37 snowfall days, and 12.91" (328mm) of snow is accumulated.Daylight
In Annawan, the average length of the day in April is 13h and 22min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:25 pm. On the last day of April, sunrise is at 5:56 am and sunset at 7:56 pm CDT.
Sunshine
In April, the average sunshine in Annawan is 7.9h.UV index
In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 4 in April translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Annawan, IL
- Average high temperature in April: 59.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in April: 42.4°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in April
Annawan, 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 (29.91"Hg).
Average wind speed in April
Annawan, IL
- Average wind speed in April: 10.6mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in April
Annawan, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Annawan, IL
- Average rainfall in April: 3.5"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").
Average rainfall days in April
Annawan, IL
- Average rainfall days in April: 16.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in April
Annawan, IL
- Average snowfall in April: 1.02"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Annawan, IL
- Average snowfall days in April: 1.2 days
The month with the highest number of snowfall days is January (11.4 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
Annawan, IL
- Average daylight in April: 13h and 24min
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 12min).
- Average sunshine in April: 7h and 54min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in April
Annawan, IL
- Average sunshine days in April: 11.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in April
Annawan, IL
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Annawan, IL
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in April
Annawan, 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).
