Jefferson County, TN Weather


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United States / Tennessee / / Jefferson County / Cities / Zip Codes

The most pleasant months of the year for Jefferson County are May, September and June. In Jefferson County, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Jefferson County with an average high temperature of 87.2°, which ranks it as cooler than most places in Tennessee. January is the snowiest month in Jefferson County with 2.4 inches of snow, and 4 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.

Today's Weather - Jefferson, TN

4 PM PST

Mostly Cloudy

77°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TonightMostly Cloudy63° / 76°SW 5 mph
Wednesday NightSlight Chance Showers And Thunderstorms61° / 82°SW 10 to 15 mph
Thursday NightSlight Chance Showers And Thunderstorms61° / 74°S 5 to 10 mph
Friday NightShowers And Thunderstorms Likely then Mostly Cloudy54° / 67°NW 5 to 10 mph
Saturday NightMostly Cloudy47° / 60°N 5 to 10 mph
Sunday NightChance Rain Showers44° / 63°N 5 to 10 mph
Monday NightPartly Cloudy45° / 70°W 5 to 10 mph

Weather Highlights

Summer High: the July high is around 87 degrees
Winter Low: the January low is 25
Rain: averages 45 inches of rain a year
Snow: averages 7 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Jefferson County area is 7.6 (10=best), which means it is more comfortable than most places in Tennessee.

7.6 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January47° 25°
February52° 28°
March61° 35°
April70° 43°
May77° 52°
June85° 61°
July87° 65°
August87° 64°
September81° 57°
October71° 45°
November60° 35°
December49° 28°
Hot, Freezing, Rainy, Snowy Days: Jefferson
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January022111
February018111
March013120
April04110
May00110
June40110
July90110
August8090
September3080
October0480
November01290
December021111

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

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