Hamilton County, TN Climate

Hamilton, TN County has a humid subtropical climate, with hot summers and mild winters. Average temperatures range from the mid-50s in winter to the mid-80s in summer. Rainfall is fairly consistent throughout the year, with January being the wettest month. Snowfall is very rare, but can occur in the winter months. Humidity levels are generally high, especially during summer months when it can be quite oppressive. All in all, Hamilton enjoys moderate temperatures year round and plenty of sunshine!

Hamilton County, Tennessee gets 52 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Hamilton County averages 2 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 210 sunny days per year in Hamilton County. The US average is 205 sunny days.

Hamilton County gets some kind of precipitation, on average, 103 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 89 degrees
Winter Low: the January low is 29
Rain: averages 52 inches of rain a year
Snow: averages 2 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Hamilton County is 7.4 (10=best), which means it is more comfortable than most places in Tennessee.

6.9 Summer - 6.4 Winter

May, September and October are the most pleasant months in Hamilton County, while January and July are the least comfortable months.

Climate	Hamilton, Tennessee	United States
	52.0 in.	38.1 in.
	1.8 in.	27.8 in.
	103.3 days	106.2 days
	210 days	205 days
	88.7°	85.8°
	28.6°	21.7°
	7.4	7
	4.7	4.3
	959 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 Hamilton County with an average high temperature of 88.7°, which ranks it as about average compared to other places in Tennessee. In Hamilton County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Hamilton County are May, September and October.

In Hamilton County, there are 36.2 days annually when the high temperature is over 90°, which is about average compared to other places in Tennessee.

January has the coldest nighttime temperatures for Hamilton County with an average of 28.6°. This is warmer than most places in Tennessee.

In Hamilton County, there are 73.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Tennessee.

In Hamilton County, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Tennessee.

Humidity in Hamilton County can be uncomfortable during the summer, but comfortable for most of the year. The most uncomfortably humid months are July, August and June. The humid season runs from June-September and the most comfortable months are October-May.

December is the wettest month in Hamilton County with 5.0 inches of rain, and the driest month is October with 3.3 inches. The wettest season is Spring with 29% of yearly precipitation and 23% occurs in Autumn, which is the driest season. The annual rainfall of 52.0 inches in Hamilton County means that it is drier than most places in Tennessee.

December is the rainiest month in Hamilton County with 9.6 days of rain, and October is the driest month with only 6.6 rainy days. There are 103.3 rainy days annually in Hamilton County, which is one of the least rainy places in Tennessee. The rainiest season is Spring when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 1.8 inches in Hamilton County means that it is one of the least snowy places in Tennessee. January is the snowiest month in Hamilton County with 0.7 inches of snow, and 1 month of the year have significant snowfall.

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