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
An escalation in the average high-temperature is seen in Williamstown with the onset of April, moving from a cool 51.1°F (10.6°C) in March to a refreshing 63.3°F (17.4°C). In the month of April, Williamstown witnesses a consistent average low-temperature of 43.5°F (6.4°C).Humidity
In April, the average relative humidity in Williamstown is 77%.Rainfall
In Williamstown, in April, it is raining for 15.8 days, with typically 2.52" (64mm) of accumulated precipitation. Throughout the year, there are 156.1 rainfall days, and 24.8" (630mm) of precipitation is accumulated.Snowfall
Months with snowfall in Williamstown are January through April, October through December. April is the last month it regularly snows. During 1 snowfall days, in April, Williamstown aggregates 0.24" (6mm) of snow. Throughout the year, there are 31.3 snowfall days, and 9.37" (238mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 16min.On the first day of April, sunrise is at 7:08 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 8:18 pm EDT.
Sunshine
In Williamstown, the average sunshine in April is 7.7h.UV index
In April, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 during April leads to these advisories:
Heed the precautions - It is counselled to guard against solar damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Williamstown in April?
What is the average humidity in April in Williamstown?
How much does it rain in Williamstown in April?
What is the last month it snows in Williamstown?
How many hours of daylight does Williamstown have in April?
What time are sunrise and sunset in April in Williamstown?
How long on average sun shines in April in Williamstown?
What is the UV index reading in April in Williamstown?
Average temperature in April
Williamstown, WV
- Average high temperature in April: 63.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in April: 43.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in April
Williamstown, WV
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in April
Williamstown, WV
- Average wind speed in April: 6.6mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in April
Williamstown, WV
- Average humidity in April: 77%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July and August (76%).
Average rainfall in April
Williamstown, WV
- Average rainfall in April: 2.52"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in April
Williamstown, WV
- Average rainfall days in April: 15.8 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in April
Williamstown, WV
- Average snowfall in April: 0.24"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Williamstown, WV
- Average snowfall days in April: 1 days
The month with the highest number of snowfall days is January (9.5 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
Williamstown, WV
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in April
Williamstown, WV
- Average sunshine days in April: 11.9 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in April
Williamstown, WV
- 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
Williamstown, WV
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in April
Williamstown, WV
- Average visibility in April: 6mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Williamstown, West Virginia, USA
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