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
April's onset in Williston brings a rise in the average high-temperature, moving from an icy 37.2°F (2.9°C) in March to a fresh 51.4°F (10.8°C). Throughout April nights, Williston registers an average low-temperature of 34.3°F (1.3°C).Humidity
In April, the average relative humidity in Williston is 62%.Rainfall
In April, the rain falls for 9.8 days. Throughout April, 0.98" (25mm) of precipitation is accumulated. In Williston, during the entire year, the rain falls for 94.7 days and collects up to 12.52" (318mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Williston, North Dakota, in April, during 4 snowfall days, 1.34" (34mm) of snow is typically accumulated. In Williston, North Dakota, during the entire year, snow falls for 53.3 days and aggregates up to 13.86" (352mm) of snow.Daylight
The average length of the day in April in Williston is 13h and 42min.On the first day of the month, sunrise is at 7:30 am and sunset at 8:25 pm. On the last day of April, in Williston, sunrise is at 6:35 am and sunset at 9:07 pm CDT.
Sunshine
The average sunshine in April in Williston is 7.7h.UV index
In Williston, North Dakota, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 3 in April translates into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. 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 heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Williston?
What is the average humidity in April in Williston?
How much does it rain in Williston in April?
How much does it snow in Williston in April?
What is the average length of the day in April in Williston?
When is the sunrise / sunset in April in Williston?
How long on average sun shines in April in Williston?
What is the UV index reading in April in Williston?
Average temperature in April
Williston, ND
- Average high temperature in April: 51.4°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (20.8°F).
- Average low temperature in April: 34.3°F
The month with the highest average low temperature is July (61.3°F).
The coldest months (with the lowest average low temperature) are January and February (7°F).
Average pressure in April
Williston, ND
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in April
Williston, ND
- Average wind speed in April: 11.1mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is February (8.9mph).
Average humidity in April
Williston, ND
- Average humidity in April: 62%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (48%).
Average rainfall in April
Williston, ND
- Average rainfall in April: 0.98"
The wettest month (with the highest rainfall) is June (2.05").
The driest month (with the least rainfall) is December (0.35").
Average rainfall days in April
Williston, ND
- Average rainfall days in April: 9.8 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is December (2.5 days).
Average snowfall in April
Williston, ND
- Average snowfall in April: 1.34"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Williston, ND
- Average snowfall days in April: 4 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Williston, ND
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in April
Williston, ND
- Average sunshine days in April: 15.8 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in April
Williston, ND
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in April
Williston, ND
- Average cloud cover in April: 44
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 19).
Average visibility in April
Williston, ND
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Williston, North Dakota, USA
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