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
Observing a rise in April, the average high-temperature goes from March's refreshing 56.8°F (13.8°C) to a comfortable 67.5°F (19.7°C). Williamsville encounters a steady low-temperature average of 50.2°F (10.1°C) throughout the month of April.Humidity
In April, the average relative humidity is 77%.Rainfall
The month with the most rainfall is April, when the rain falls for 15.3 days and typically aggregates up to 4.8" (122mm) of precipitation.Snowfall
In Williamsville, Missouri, snow does not fall in April through September.Daylight
In April, the average length of the day is 13h and 10min.On the first day of April, sunrise is at 6:46 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:50 pm CDT.
Sunshine
In Williamsville, the average sunshine in April is 8.7h.UV index
The average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 5 during April translates into the following guidance:
Exercise prevention - Precautions against solar damage are endorsed. To guard against the harmful effects of the Sun, minimize exposure during midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Williamsville?
What is the average humidity in April in Williamsville?
What is the rainiest month in Williamsville?
How much does it rain in Williamsville in April?
When it does not snow in Williamsville?
Does it snow in Williamsville in April?
How many hours of daylight does Williamsville have in April?
When are sunrise and sunset in April in Williamsville?
How many hours of sunshine does Williamsville have in April?
How high is the UV index in April in Williamsville?
Average temperature in April
Williamsville, MO
- Average high temperature in April: 67.5°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in April: 50.2°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in April
Williamsville, 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
Williamsville, MO
- Average wind speed in April: 8.5mph
The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in April
Williamsville, 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 (70%).
Average rainfall in April
Williamsville, MO
- Average rainfall in April: 4.8"
The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in April
Williamsville, MO
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.6 days).
Average snowfall in April
Williamsville, MO
- Average snowfall in April: 0"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in April
Williamsville, MO
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is February (3.3 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
Williamsville, MO
- Average daylight in April: 13h and 1min
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 42min).
- Average sunshine in April: 8h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in April
Williamsville, MO
- Average sunshine days in April: 13.2 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in April
Williamsville, 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 and December (UV index 2).
Average cloud cover in April
Williamsville, MO
- Average cloud cover in April: 39
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in April
Williamsville, 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).
Williamsville, Missouri, USA
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