37322 Weather (Decatur, TN)

Weather forecast for: Decatur TN

Last Update: 7:06 pm EDT Mar 11, 2026

Tonight: Showers and possibly a thunderstorm. Low around 38. Southwest wind around 10 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Thursday: Showers likely, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 55. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night: Mostly clear, with a low around 33. North wind around 5 mph becoming calm.

Friday: Sunny, with a high near 65. South wind 5 to 15 mph, with gusts as high as 25 mph.

Friday Night: Mostly clear, with a low around 37. Southwest wind around 5 mph becoming calm in the evening.

Saturday: Sunny, with a high near 71. Calm wind becoming east around 5 mph.

Saturday Night: Mostly clear, with a low around 47. Calm wind.

Sunday: A 20 percent chance of showers before 2pm. Partly sunny, with a high near 75. Breezy.

Sunday Night: A slight chance of thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 37. Chance of precipitation is 80%.

Monday: Showers, mainly before 8am. High near 50. Chance of precipitation is 80%.

Monday Night: Partly cloudy, with a low around 24.

Tuesday: Mostly sunny, with a high near 47.

Tuesday Night: Mostly cloudy, with a low around 27.

Wednesday: Mostly sunny, with a high near 55.