April weather forecastSaint Mary, MO
April
Weather in April
April is an enjoyable spring month in Saint Mary, Missouri, with an average temperature ranging between max 66.4°F (19.1°C) and min 48°F (8.9°C).Temperature
Saint Mary's weather in April shows a rise in the average high-temperature, moving up from March's mild 55.4°F (13°C) to a comfortable 66.4°F (19.1°C). In Saint Mary, April is marked by an average low-temperature of 48°F (8.9°C).Humidity
In April, the average relative humidity in Saint Mary, Missouri, is 77%.Rainfall
April is the month with the most rainfall in Saint Mary. Rain falls for 15.6 days and accumulates 4.13" (105mm) of precipitation.Snowfall
Months with snowfall in Saint Mary are January through April, October through December. April is the last month it regularly snows. During 0.3 snowfall days, in April, Saint Mary aggregates 0.04" (1mm) of snow. Throughout the year, there are 16 snowfall days, and 6.89" (175mm) of snow is accumulated.Daylight
The average length of the day in April in Saint Mary is 13h and 13min.On the first day of April, sunrise is at 6:43 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 7:49 pm CDT.
Sunshine
In April, the average sunshine in Saint Mary is 8.6h.UV index
In Saint Mary, Missouri, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 5 in April transforms into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Saint Mary, MO
- Average high temperature in April: 66.4°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).
- Average low temperature in April: 48°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in April
Saint Mary, MO
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Saint Mary, MO
- Average wind speed in April: 8.9mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in April
Saint Mary, MO
- Average humidity in April: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Saint Mary, MO
- Average rainfall in April: 4.13"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in April
Saint Mary, MO
- Average rainfall days in April: 15.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in April
Saint Mary, MO
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Saint Mary, MO
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (5.2 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
Saint Mary, MO
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in April: 8h and 36min
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
Saint Mary, MO
- Average sunshine days in April: 12.6 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in April
Saint Mary, MO
- Average UV index in April: 5
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 and December (UV index 2).
Average cloud cover in April
Saint Mary, MO
- Average cloud cover in April: 41
The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in April
Saint Mary, 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).
