Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
During August, Williston records an average high-temperature of a still moderately hot 82°F (27.8°C), marking a slight divergence from July's 83.1°F (28.4°C). Williston reports a consistent average low-temperature of 60.6°F (15.9°C) throughout August nights.Heat index
In August, the heat index is evaluated at 82.4°F (28°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.When assessing, remember that heat index measurements are for light winds and shaded spots. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
With an average relative humidity of 48%, August is the least humid month in Williston.Rainfall
In August, in Williston, the rain falls for 10.3 days. Throughout August, 1.14" (29mm) 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
In Williston, snow does not fall in June through September.Daylight
The average length of the day in August is 14h and 15min.On the first day of the month, sunrise is at 6:31 am and sunset at 9:30 pm. On the last day of August, sunrise is at 7:12 am and sunset at 8:37 pm CDT.
Sunshine
In Williston, the average sunshine in August is 10.8h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 6 during August morphs into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Williston in August?
What is the least humid month in Williston?
What is the average humidity in August in Williston?
How much does it rain in Williston in August?
When it does not snow in Williston?
What is the average length of the day in August in Williston?
When is the sunrise / sunset in August in Williston?
How many hours of sunshine does Williston have in August?
What are the months with the highest UV index in Williston?
What is the UV index reading in August in Williston?
Average temperature in August
Williston, ND
- Average high temperature in August: 82°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 August: 60.6°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 August
Williston, ND
- Average pressure in August: 29.89"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 August
Williston, ND
- Average wind speed in August: 9.1mph
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 August
Williston, ND
- Average humidity in August: 48%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (48%).
Average rainfall in August
Williston, ND
- Average rainfall in August: 1.14"
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 August
Williston, ND
- Average rainfall days in August: 10.3 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 August
Williston, ND
- Average snowfall in August: 0"
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 August
Williston, ND
- Average snowfall days in August: 0 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 August /
Average sunshine in August
Williston, ND
- Average daylight in August: 14h and 1min
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 August: 10h and 5min
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 August
Williston, ND
- Average sunshine days in August: 17.4 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 August
Williston, ND
- Average UV index in August: 6
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 August
Williston, ND
- Average cloud cover in August: 20
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 August
Williston, ND
- Average visibility in August: 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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