Jefferson City, MT Weather

Jefferson City, MT climate is mild during summer when temperatures tend to be in the 60's and very cold during winter when temperatures tend to be in the 20's.

The warmest month of the year is July with an average maximum temperature of 82.20 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 9.90 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 36 degrees Fahrenheit, and moderate during winter with an average difference of 25 degrees Fahrenheit.

The annual average precipitation at Jefferson City is 11.51 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 1.99 Inches.

Weather Data

Moon, Sunrise and Sunset

	Moon Phase: Waxing Gibbous Moon	Civil Twilight: 5:10 AM MDT	Sunrise: 5:47 AM MDT
		Sunset: 9:01 PM MDT	Civil Twilight: 9:38 PM MDT

Normal Climate

Normal Temperatures

(BOULDER Weather station, 11.82 miles from Jefferson City)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	34.3	39.5	46.6	55.8	64.6	73.8	82.2	82.0	71.4	59.6	42.1	34.6	57.2
Mean °F	22.1	26.7	33.3	41.1	49.5	57.8	64.5	63.8	53.9	43.6	30.0	22.7	42.4
Min °F	9.9	13.9	19.9	26.3	34.3	41.8	46.8	45.5	36.4	27.5	17.9	10.7	27.6

Normal Precipitation