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 frosty 47.7°F (8.7°C) to a mild 59.5°F (15.3°C). An average nighttime temperature of 42.8°F (6°C) is witnessed throughout April.Humidity
In April, the average relative humidity in Mannon is 74%.Rainfall
In April, the rain falls for 13.6 days. Throughout April, 1.93" (49mm) of precipitation is accumulated. In Mannon, during the entire year, the rain falls for 121.3 days and collects up to 17.72" (450mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 0.6 snowfall days, in April, Mannon aggregates 0.55" (14mm) of snow. Throughout the year, in Mannon, Illinois, there are 26.3 snowfall days, and 7.64" (194mm) of snow is accumulated.Daylight
In April, the average length of the day in Mannon, Illinois, is 13h and 21min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:29 pm. On the last day of April, in Mannon, sunrise is at 6:01 am and sunset at 8:00 pm CDT.
Sunshine
In Mannon, the average sunshine in April is 8h.UV index
The average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In April, a daily maximum UV index of 4 leads to the following instructions:
Be vigilant - Suggestions to stave off sun damage are provided. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Mannon?
What is the average humidity in April in Mannon?
How many days does it rain in April in Mannon?
What is the last month it snows in Mannon?
What is the average length of the day in April in Mannon?
When are sunrise and sunset in April in Mannon?
How many hours of sunshine does Mannon have in April?
What is the UV index reading in April in Mannon?
Average temperature in April
Mannon, IL
- Average high temperature in April: 59.5°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in April: 42.8°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in April
Mannon, IL
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in April
Mannon, IL
- Average wind speed in April: 10.6mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in April
Mannon, 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 (71%).
Average rainfall in April
Mannon, IL
- Average rainfall in April: 1.93"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in April
Mannon, IL
- Average rainfall days in April: 13.6 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in April
Mannon, IL
- Average snowfall in April: 0.55"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Mannon, IL
- Average snowfall days in April: 0.6 days
The month with the highest number of snowfall days is January (7.8 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
Mannon, IL
- Average daylight in April: 13h and 2min
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 18min).
- Average sunshine in April: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in April
Mannon, IL
- Average sunshine days in April: 15.8 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in April
Mannon, 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
Mannon, IL
- Average cloud cover in April: 46
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in April
Mannon, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Mannon, Illinois, USA
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