Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
In Williston, July is the warmest month, with temperatures averaging a high of 83.1°F (28.4°C) and a low of 61.3°F (16.3°C).Heat index
The heat index in July is evaluated at 84.2°F (29°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
In Williston, the average relative humidity in July is 52%.Rainfall
In Williston, North Dakota, during July, the rain falls for 12 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, in Williston, North Dakota, there are 94.7 rainfall days, and 12.52" (318mm) of precipitation is accumulated.Snowfall
In Williston, North Dakota, snow does not fall in June through September.Daylight
In Williston, the average length of the day in July is 15h and 36min.On the first day of July, sunrise is at 5:58 am and sunset at 9:58 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 9:31 pm CDT.
Sunshine
July has the most sunshine of the year, with an average of 11.6h of sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In July, a regular UV index of 6 translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year in Williston?
Is it hot in Williston during July?
What is the average humidity in July in Williston?
How many days does it rain in July in Williston?
When it does not snow in Williston?
What is the average length of the day in July in Williston?
When are sunrise and sunset in July in Williston?
What month has the most sunshine in Williston?
How long on average sun shines in July in Williston?
When is the highest UV index in Williston?
What is the UV index reading in July in Williston?
Average temperature in July
Williston, ND
- Average high temperature in July: 83.1°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 July: 61.3°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 July
Williston, ND
- Average pressure in July: 29.9"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 July
Williston, ND
- Average wind speed in July: 9.4mph
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 July
Williston, ND
- Average humidity in July: 52%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (48%).
Average rainfall in July
Williston, ND
- Average rainfall in July: 1.97"
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 July
Williston, ND
- Average rainfall days in July: 12 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 July
Williston, ND
- Average snowfall in July: 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 July
Williston, ND
- Average snowfall days in July: 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 July /
Average sunshine in July
Williston, ND
- Average daylight in July: 15h 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 July: 11h 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 July
Williston, ND
- Average sunshine days in July: 14.8 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 July
Williston, ND
- Average UV index in July: 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 July
Williston, ND
- Average cloud cover in July: 19
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 July
Williston, ND
- Average visibility in July: 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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