Jefferson City, MT Weather - Forecast & Monthly Averages

TEMPERATURE	35
HUMIDITY	67
PRESSURE
WIND COND.	203 11.3

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Weather Quick Facts

The highest monthly average temperature in Jefferson City for July is 72.7 degrees
The lowest monthly average temperature in Jefferson City for December is 21.8 degrees
The most monthly precipitation in Jefferson City occurs in June with 2 inches
The air quality index in Jefferson City is 5% better than the national average
The pollution index in Jefferson City is 58% better than the national average

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Jefferson City 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	13°F	35°F	24°F	0.6"
February	18°F	41°F	28°F	0.7"
March	25°F	52°F	38°F	0.5"
April	31°F	60°F	44°F	0.9"
May	39°F	69°F	53°F	1.8"
June	47°F	79°F	63°F	2.0"
July	55°F	91°F	73°F	0.7"
August	52°F	88°F	69°F	1.1"
September	44°F	77°F	59°F	1.1"
October	34°F	62°F	46°F	0.8"
November	23°F	47°F	34°F	0.8"
December	12°F	33°F	22°F	0.8"

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Jefferson City 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	Jefferson City	Montana	National
Air quality index	40	34	42
Pollution index	1,148,190	834,473	2,726,193

Jefferson City air quality

Measurement	Total
Days measured	365
Days with good air quality	288
Days with moderate air quality	75
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.020%
Carbon Tetrachloride	0.002%
Lead	0.010%
Mercury	0.000%

Average monthly Jefferson City temperature with heat index

Jefferson City monthly precipitation with daily maximum

Jefferson City monthly snow depth with daily maximum

Jefferson City monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Basin, MT	267	40	20.0%
Helena, MT	32,655	40	20.0%
Clancy, MT	1,964	40	20.0%
Boulder, MT	1,027	40	20.0%
South Hills, MT	586	40	20.0%
Jefferson City, MT	596	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Thornton, AR	596	35	30.0%
Woodson, AR	596	45	10.0%
Allensworth, CA	596	66	32.0%
Dudley, GA	596	38	24.0%
Radcliffe, IA	596	37	26.0%
Jefferson City, MT	596	40	20.0%

Source: The Jefferson City, MT 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.