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
The rise of average high-temperatures is seen in April, with an increase from a frosty 46.6°F (8.1°C) in March to a mild 58.6°F (14.8°C). An average low-temperature of 41.7°F (5.4°C) is noted during the month of April.Humidity
The average relative humidity in April is 76%.Rainfall
In April, the rain falls for 16.8 days. Throughout April, 2.99" (76mm) of precipitation is accumulated. Throughout the year, there are 168.7 rainfall days, and 29.72" (755mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Williamstown, during April, snow falls for 1.8 days and regularly aggregates up to 0.51" (13mm) of snow. Throughout the year, there are 48.9 snowfall days, and 13.23" (336mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 20min.On the first day of April, sunrise is at 7:16 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 8:30 pm EDT.
Sunshine
The average sunshine in April is 7.3h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In April, the maximum UV index of 4 translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How many days does it rain in April?
How much does it snow in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
Williamstown, OH
- Average high temperature in April: 58.6°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in April: 41.7°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in April
Williamstown, OH
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Williamstown, OH
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in April
Williamstown, OH
- Average humidity in April: 76%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in April
Williamstown, OH
- Average rainfall in April: 2.99"
The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is December (1.81").
Average rainfall days in April
Williamstown, OH
- Average rainfall days in April: 16.8 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in April
Williamstown, OH
- Average snowfall in April: 0.51"
The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Williamstown, OH
- Average snowfall days in April: 1.8 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Williamstown, OH
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 7h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in April
Williamstown, OH
- Average sunshine days in April: 10.9 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in April
Williamstown, OH
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Williamstown, OH
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in April
Williamstown, OH
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
Williamstown, Ohio, USA
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