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Sweetwater (TN) Weather and Climate: A Comprehensive Guide

Sweetwater experiences great temperature shifts. The city's weather can transition from very warm days to cold weather. It also has a relatively rain/snowy climate with high levels of precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

The climate in Sweetwater is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 31°C in August to a chilly 8°C in January.

Nighttime temperatures can drop, with average lows reaching -2°C in January. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Sweetwater has a notably wet climate with abundant precipitation, recording 1464 mm of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, December, sees around 162 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 97 mm of rainfall.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Sweetwater, summer days are longer and more sunny, with daily sunshine hours peaking at 9.7 hours in June. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.2 hours per average day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Knoxville, the United States of America (62 KM, 39 Miles).

Daily hours of sunshine

Data from: Knoxville, the United States of America (62 KM, 39 Miles).

Forecast for Sweetwater (TN)

Mon   Dec 23
9°C | -6°C
SW 2 m/s
clear and no rain

clear and no rain

Tue   Dec 24
12°C | -4°C
NE 1 m/s
partly cloudy and no rain

partly cloudy and no rain

Wed   Dec 25
14°C | -1°C
NE 1 m/s
broken clouds and no rain

broken clouds and no rain

The best time of year to visit Sweetwater in the United States of America

During the months of April, May and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which months have the greatest rainfall in Sweetwater?
    Most rainfall (rainy season) is seen in July and December.
  • Which is the warmest month in Sweetwater?
    August has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Sweetwater?
    The coldest month is January with an average maximum temperature of 8°C.
  • Which is the wettest month in Sweetwater?
    December tops the wettest month list with 162 mm of rainfall.
  • Which is the driest month in Sweetwater?
    February is the driest month with 97 mm of precipitation.
  • Which is the sunniest month in Sweetwater?
    June is the sunniest month with an average of 290 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.