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
The commencement of August records an average high-temperature of a still moderately hot 77.5°F (25.3°C), barely varying from July's 79.2°F (26.2°C). The average low-temperature during August nights is a moderate 59.7°F (15.4°C).Humidity
May, July and August, with an average relative humidity of 77%, are the least humid months.Rainfall
In August, the rain falls for 16.3 days. Throughout August, 1.89" (48mm) of precipitation is accumulated. Throughout the year, there are 161.8 rainfall days, and 21.93" (557mm) of precipitation is accumulated.Snowfall
In Williston, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 53min.On the first day of the month, sunrise is at 6:06 am and sunset at 8:34 pm. On the last day of August, sunrise is at 6:38 am and sunset at 7:49 pm EDT.
Sunshine
In Williston, the average sunshine in August is 10.1h.UV index
In Williston, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature in Williston?
What is the least humid month?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
What is the average length of the day in August?
When are sunrise and sunset in August?
How long on average sun shines in August?
What is the UV index reading in August in Williston?
Average temperature in August
Williston, NY
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in August: 59.7°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in August
Williston, NY
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Williston, NY
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in August
Williston, NY
- Average humidity in August: 77%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are May, July and August (77%).
Average rainfall in August
Williston, NY
- Average rainfall in August: 1.89"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in August
Williston, NY
- Average rainfall days in August: 16.3 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in August
Williston, NY
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Williston, NY
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Williston, NY
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 10h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in August
Williston, NY
- Average sunshine days in August: 11.6 days
The month with the most sunshine days is June (13.4 days).
The month with the least sunshine days is February (6.7 days).
Average UV index in August
Williston, NY
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Williston, NY
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Williston, NY
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Williston, New York, USA
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