Williston, ND Weather - Forecast & Monthly Averages

TEMPERATURE	77
HUMIDITY	30
PRESSURE	100270
WIND COND.	140 20.5

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Weather Quick Facts

The highest monthly average temperature in Williston for July is 72.1 degrees
The lowest monthly average temperature in Williston for January is 14.2 degrees
The most monthly precipitation in Williston occurs in May with 2.7 inches
The air quality index in Williston is 19% better than the national average
The pollution index in Williston is 79% better than the national average

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Williston Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	3°F	27°F	14°F	0.5"
February	5°F	29°F	16°F	0.6"
March	17°F	45°F	30°F	0.7"
April	29°F	60°F	43°F	1.1"
May	39°F	70°F	54°F	2.7"
June	49°F	80°F	64°F	2.6"
July	56°F	89°F	72°F	2.1"
August	53°F	87°F	69°F	1.5"
September	43°F	77°F	59°F	1.6"
October	31°F	60°F	44°F	1.2"
November	18°F	43°F	29°F	0.7"
December	4°F	27°F	15°F	0.8"

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Williston air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Williston	North Dakota	National
Air quality index	34	35	42
Pollution index	563,599	1,038,665	2,726,193

Williston air quality information

Measurement	Total
Days measured	365
Days with good air quality	309
Days with moderate air quality	53
Days w/ poor A.Q. for sensitive groups	3
Days with unhealthy air quality	0

Williston air quality information

Pollutant	Total
Arsenic	0.000%
Benzene	0.010%
Carbon Tetrachloride	0.001%
Lead	0.010%
Mercury	0.000%

Average monthly Williston temperature with heat index

Williston monthly precipitation with daily maximum

Williston monthly snow depth with daily maximum

Williston monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Springbrook, ND	14	34	32.0%
Epping, ND	79	34	32.0%
Williston, ND	27,812	34	32.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Boisbriand, QC	27,813	n/a
Reisterstown, MD	27,804	46	8.0%
Fridley, MN	27,789	46	8.0%
Old Bridge, NJ	27,836	41	18.0%
Slidell, LA	27,782	45	10.0%
Williston, ND	27,812	34	32.0%

Source: The Williston, ND weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.