ClimateForecastNovemberDecember >>

Decatur (GA) Climate by Month

Decatur experiences great temperature shifts. The city's weather can transition from very warm days to cold weather. It also has a notably wet climate with much precipitation. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

The climate in Decatur is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures range from a very warm 32°C in July, the warmest time of the year, to a chilly 11°C during cooler months like January. At night, temperatures typically average around 0°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Decatur has a notably wet climate with abundant precipitation, recording 1273 mm of rain/snowfall per year. While rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 150 mm of precipitation, spread over 12 rainy days. In contrast, June experiences a drier climate, with about 80 mm of rainfall spread across 11 rainy days.

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

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Decatur. While May receives considerable daily sunshine with up to 9.6 hours, January marks the darkest time of the year, where sunshine is scarce with only 5.5 hours of sunlight per day.

Monthly hours of sunshine

Data from: Atlanta, the United States of America (8 KM, 5 Miles).

Daily hours of sunshine

Data from: Atlanta, the United States of America (8 KM, 5 Miles).

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

During the months of April 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 is the warmest month in Decatur?
    July has an average maximum temperature of 32°C and is the warmest month of the year.
  • Which is the coldest month in Decatur?
    The coldest month is January with an average maximum temperature of 11°C.
  • Which is the wettest month in Decatur?
    December tops the wettest month list with 150 mm of rainfall.
  • Which is the driest month in Decatur?
    June is the driest month with 80 mm of precipitation.
  • Which is the sunniest month in Decatur?
    May is the sunniest month with an average of 288 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.

    Forecast for Decatur (GA)

    Fri   Nov 22
    10°C | 3°C
    NW 22 km/h
    almost clear and no rain

    almost clear and no rain

    Sat   Nov 23
    14°C | 4°C
    NW 18 km/h
    clear and no rain

    clear and no rain

    Sun   Nov 24
    17°C | 3°C
    SW 11 km/h
    clear and no rain

    clear and no rain