Jefferson County, Idaho 

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ID Gifts

Climate in Jefferson County, Idaho

Jefferson County, Idaho gets 12 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Jefferson County averages 37 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 204 sunny days per year in Jefferson County. The US average is 205 sunny days.

Jefferson County gets some kind of precipitation, on average, 83 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.


Weather Highlights

Summer High: the July high is around 86 degrees
Winter Low: the January low is 11
Rain: averages 12 inches of rain a year
Snow: averages 37 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Jefferson County is 6.7 (10=best), which means it is more comfortable than most places in Idaho.

8.9 / 4.1

Summer   /   Winter
June, July and September are the most pleasant months in Jefferson County, while January and December are the least comfortable months.

Climate Averages
  Jefferson, IdahoUnited States
  11.8 in.38.1 in.
  37.2 in.27.8 in.
  83.1 days106.2 days
  204 days205 days
  85.8°85.8°
  11.1°21.7°
  6.77
  4.94.3
  4877 ft.2443 ft.
CLIMATE

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.


July is the hottest month for Jefferson County with an average high temperature of 85.8°, which ranks it as about average compared to other places in Idaho. In Jefferson County, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Jefferson County are June, September and August.


In Jefferson County, there are 17.8 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.


January has the coldest nighttime temperatures for Jefferson County with an average of 11.1°. This is colder than most places in Idaho.


In Jefferson County, there are 178.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.


In Jefferson County, there are 15.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.


Humidity is low in Jefferson County, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.


May is the wettest month in Jefferson County with 1.7 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Summer with 33% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 11.8 inches in Jefferson County means that it is drier than most places in Idaho.


December is the rainiest month in Jefferson County with 8.9 days of rain, and September is the driest month with only 4.4 rainy days. There are 83.1 rainy days annually in Jefferson County, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 30% of the time and the driest is Autumn with only a 20% chance of a rainy day.


An annual snowfall of 37.2 inches in Jefferson County means that it is less snowy than most places in Idaho. December is the snowiest month in Jefferson County with 10.6 inches of snow, and 7 months of the year have significant snowfall.





  • Annual Rainfall (US Avg: 36.5")
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    MAPS OF JEFFERSON COUNTY, IDAHO
    ZIP CODES IN JEFFERSON COUNTY, IDAHO
    83442 83434 83444 83450 83443 83431 83435 83425


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