April weather forecastSaint Charles, IA
April
Weather in April
April is a moderate spring month in Saint Charles, Iowa, with an average temperature ranging between max 59.7°F (15.4°C) and min 42.3°F (5.7°C).Temperature
April comes with an increase, with the average high-temperature moving from a frosty 47.8°F (8.8°C) in March to a refreshing 59.7°F (15.4°C). During April, Saint Charles records a consistent average nighttime temperature of 42.3°F (5.7°C).Humidity
In April, the average relative humidity is 73%.Rainfall
In Saint Charles, in April, during 14.7 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 133 rainfall days, and 26.14" (664mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In April, it is snowing for 1.7 days. Throughout April, 0.91" (23mm) of snow is accumulated. Throughout the year, there are 35 snowfall days, and 15.04" (382mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 21min.On the first day of April, sunrise is at 6:56 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:11 pm CDT.
Sunshine
In April, the average sunshine is 8.1h.UV index
In Saint Charles, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 in April interprets into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Saint Charles, IA
- Average high temperature in April: 59.7°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 (28.8°F).
- Average low temperature in April: 42.3°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 (15.3°F).
Average pressure in April
Saint Charles, IA
- Average pressure in April: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Saint Charles, IA
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in April
Saint Charles, IA
- Average humidity in April: 73%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Saint Charles, IA
- Average rainfall in April: 2.76"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in April
Saint Charles, IA
- Average rainfall days in April: 14.7 days
The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in April
Saint Charles, IA
- Average snowfall in April: 0.91"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Saint Charles, IA
- Average snowfall days in April: 1.7 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Saint Charles, IA
- 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 18min).
- Average sunshine in April: 8h and 6min
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 24min).
Average sunshine days in April
Saint Charles, IA
- Average sunshine days in April: 13.2 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in April
Saint Charles, IA
- 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, October, November and December (UV index 2).
Average cloud cover in April
Saint Charles, IA
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in April
Saint Charles, IA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
