April weather forecastAlpha, IL
April
Weather in April
April is a refreshing spring month in Alpha, Illinois, with an average temperature varying between 59.2°F (15.1°C) and 42.4°F (5.8°C).Temperature
The arrival of April brings a temperature shift, with the average high-temperature escalating from a chilly 46.9°F (8.3°C) in March to a mild 59.2°F (15.1°C). Nighttime temperature lowers to an average of 42.4°F (5.8°C) in April.Humidity
The average relative humidity in April is 74%.Rainfall
In Alpha, Illinois, in April, it is raining for 16.5 days, with typically 3.23" (82mm) of accumulated precipitation. In Alpha, during the entire year, the rain falls for 143.6 days and collects up to 27.99" (711mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows in Alpha. During 0.9 snowfall days, in April, Alpha aggregates 0.79" (20mm) of snow. Throughout the year, in Alpha, there are 36.5 snowfall days, and 13.5" (343mm) of snow is accumulated.Daylight
The average length of the day in April in Alpha is 13h and 21min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:27 pm. On the last day of April, sunrise is at 5:59 am and sunset at 7:58 pm CDT.
Sunshine
In April, the average sunshine is 7.9h.UV index
The average daily maximum UV index in April in Alpha is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during April leads to these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Around midday, solar radiation is most harmful; hence, exposure should be limited. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Alpha, IL
- Average high temperature in April: 59.2°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 (28.4°F).
- Average low temperature in April: 42.4°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 (16.2°F).
Average pressure in April
Alpha, IL
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in April
Alpha, 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 (6.7mph).
Average humidity in April
Alpha, IL
- Average humidity in April: 74%
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Alpha, IL
- Average rainfall in April: 3.23"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is December (1.26").
Average rainfall days in April
Alpha, IL
- Average rainfall days in April: 16.5 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).
Average snowfall in April
Alpha, IL
- Average snowfall in April: 0.79"
The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Alpha, IL
- Average snowfall days in April: 0.9 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Alpha, IL
- Average daylight in April: 13h and 18min
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: 7h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in April
Alpha, IL
- Average sunshine days in April: 11.3 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in April
Alpha, IL
- Average UV index in April: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Alpha, IL
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in April
Alpha, 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).
