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
The shift from March to April sees an increase in the average high-temperature, transitioning from a frosty 46.9°F (8.3°C) to a moderate 59.2°F (15.1°C). During the nights in April, Castle Junction experiences a consistent average temperature of 42.4°F (5.8°C).Humidity
In Castle Junction, the average relative humidity in April is 74%.Rainfall
In Castle Junction, in April, during 14.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Castle Junction, Illinois, during the entire year, the rain falls for 128 days and collects up to 19.29" (490mm) of precipitation.Snowfall
Months with snowfall in Castle Junction are January through April, October through December. April is the last month it regularly snows. During 1.4 snowfall days, in April, Castle Junction aggregates 0.35" (9mm) of snow. In Castle Junction, Illinois, during the entire year, snow falls for 35.4 days and aggregates up to 8.35" (212mm) of snow.Daylight
In April, the average length of the day is 13h and 22min.On the first day of April, sunrise is at 6:43 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 7:59 pm CDT.
Sunshine
In April, the average sunshine in Castle Junction is 7.9h.UV index
In Castle Junction, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 4 in April leads to these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What are the temperatures in Castle Junction in April?
What is the average humidity in April in Castle Junction?
How many days does it rain in April in Castle Junction?
What is the last month it snows in Castle Junction?
How many hours of daylight does Castle Junction have in April?
When are sunrise and sunset in April in Castle Junction?
How many hours of sunshine does Castle Junction have in April?
What is the UV index intensity in April in Castle Junction?
Average temperature in April
Castle Junction, IL
- Average high temperature in April: 59.2°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in April: 42.4°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in April
Castle Junction, 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
Castle Junction, 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
Castle Junction, 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
Castle Junction, IL
- Average rainfall in April: 2.01"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in April
Castle Junction, IL
- Average rainfall days in April: 14.3 days
The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in April
Castle Junction, IL
- Average snowfall in April: 0.35"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Castle Junction, IL
- Average snowfall days in April: 1.4 days
The month with the highest number of snowfall days is January (10.3 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
Castle Junction, 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 12min).
- Average sunshine in April: 7h and 5min
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 0min).
Average sunshine days in April
Castle Junction, IL
- Average sunshine days in April: 13.4 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in April
Castle Junction, 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
Castle Junction, 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
Castle Junction, 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).
Castle Junction, Illinois, USA
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