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
Lake Saint Louis in April shows a temperature shift, moving from an average high of a fresh 54.1°F (12.3°C) in March to a comfortable 65.5°F (18.6°C). An average low-temperature of 47.1°F (8.4°C) is expected during April.Humidity
In Lake Saint Louis, Missouri, the average relative humidity in April is 75%.Rainfall
The month with the most rainfall in Lake Saint Louis is April, when the rain falls for 15.8 days and typically aggregates up to 3.82" (97mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Lake Saint Louis, Missouri. April is the last month it regularly snows in Lake Saint Louis. During 0.3 snowfall days, in April, Lake Saint Louis aggregates 0.04" (1mm) of snow. In Lake Saint Louis, during the entire year, snow falls for 21.4 days and aggregates up to 8.62" (219mm) of snow.Daylight
In April, the average length of the day in Lake Saint Louis, Missouri, is 13h and 14min.On the first day of April in Lake Saint Louis, sunrise is at 6:46 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:54 pm CDT.
Sunshine
The average sunshine in April in Lake Saint Louis, Missouri, is 8.6h.UV index
In April, the average daily maximum UV index in Lake Saint Louis, Missouri, is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 4 in April translates into the following instructions:
Undertake protective steps - Preventing sun damage is advised. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Lake Saint Louis in April?
What is the average humidity in April in Lake Saint Louis?
What is the wettest month in Lake Saint Louis?
How much does it rain in Lake Saint Louis in April?
What is the last month it snows in Lake Saint Louis?
How many hours of daylight does Lake Saint Louis have in April?
When is the sunrise / sunset in April in Lake Saint Louis?
How many hours of sunshine does Lake Saint Louis have in April?
How high is the UV index in April in Lake Saint Louis?
Average temperature in April
Lake Saint Louis, MO
- Average high temperature in April: 65.5°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in April: 47.1°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in April
Lake Saint Louis, MO
- Average pressure in April: 29.93"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
Lake Saint Louis, MO
- Average wind speed in April: 8.8mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in April
Lake Saint Louis, MO
- Average humidity in April: 75%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Lake Saint Louis, MO
- Average rainfall in April: 3.82"
The wettest month (with the highest rainfall) is April (3.82").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in April
Lake Saint Louis, MO
- Average rainfall days in April: 15.8 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in April
Lake Saint Louis, MO
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Lake Saint Louis, MO
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (7.3 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
Lake Saint Louis, MO
- Average daylight in April: 13h and 1min
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 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in April
Lake Saint Louis, MO
- Average sunshine days in April: 12.9 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in April
Lake Saint Louis, MO
- Average UV index in April: 4
The months with the highest UV index are May, 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
Lake Saint Louis, MO
- Average cloud cover in April: 41
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
Lake Saint Louis, 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).
Lake Saint Louis, Missouri, USA
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