April weather forecastWest Alton, MO
April
Weather in April
April in West Alton, Missouri, is an enjoyable spring month, with an average temperature ranging between min 46.8°F (8.2°C) and max 64.6°F (18.1°C).Temperature
As April arrives, a rise in the average high-temperature is observed, moving from a cool 53.2°F (11.8°C) in March to a comfortable 64.6°F (18.1°C). West Alton records an average nighttime low-temperature of 46.8°F (8.2°C) throughout April.Humidity
In West Alton, the average relative humidity in April is 76%.Rainfall
In West Alton, in April, it is raining for 13 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, there are 128.3 rainfall days, and 18.9" (480mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In West Alton, the average length of the day in April is 13h and 15min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:24 pm. On the last day of April, sunrise is at 6:03 am and sunset at 7:52 pm CDT.
Sunshine
In April, the average sunshine is 8.4h.UV index
In West Alton, Missouri, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 in April converts into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
West Alton, MO
- Average high temperature in April: 64.6°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in April: 46.8°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in April
West Alton, MO
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
West Alton, MO
- Average wind speed in April: 9.3mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in April
West Alton, MO
- Average humidity in April: 76%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
West Alton, MO
- Average rainfall in April: 2.01"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in April
West Alton, MO
- Average rainfall days in April: 13 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in April
West Alton, MO
- Average snowfall in April: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
West Alton, MO
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (5.4 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
West Alton, MO
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days in April
West Alton, MO
- Average sunshine days in April: 15.1 days
The month with the most sunshine days is December (21 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in April
West Alton, MO
- 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, November and December (UV index 2).
Average cloud cover in April
West Alton, MO
- Average cloud cover in April: 42
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in April
West Alton, MO
- 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).
