Decatur, Tennessee Climate
United States
Pop. 1,575 Elev. 238 m / 781 ft
TZ: America/New_York (UTC-4) ·
Summers in Decatur are warm, with July highs around 91°F (33°C), while winters are cold with January lows of 29°F (-2°C). Humidity pushes the summer feels-like temperature to around 109°F (43°C). Expect around 73 rainy days annually (45.1 in / 1145 mm total), with snow on 1 days and 6 in (160 mm) of annual accumulation. The city averages 135 sunny days per year and around 53 thunderstorm days. Nearby lake water reaches 81°F (27°C) in summer.
| Temperature | 91°F (33°C) high | 29°F (-2°C) low |
| Feels like | 109°F (43°C) high | 29°F (-2°C) low |
| Rain | 73 days | 45.1 in (1145 mm) /yr |
| Snow | 1 days | 6.3 in (160 mm) /yr |
| Sky | 135 sunny | 53 stormy |
| Wind | 1.9 mph (0.9 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Mar, Jun, Aug, Sep, Oct, Nov
Sky & Air by Month
Cloud cover (%)
47
Jan 53
Feb 50
Mar 58
Apr 73
May 62
Jun 50
Jul 54
Aug 38
Sep 42
Oct 47
Nov 60
Dec Humidity (%)
60
Jan 61
Feb 48
Mar 61
Apr 74
May 74
Jun 69
Jul 71
Aug 68
Sep 66
Oct 64
Nov 65
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 41 mi Chattanooga Metropolitan Airport (Lovell Field) (CHA)
Ski resort 70 mi Ober Mountain
National park 30 mi Cumberland Mountain State Park
Mountain peak
(5,125 ft) 45 mi Little Haw Knob
Hospital 11 mi Rhea Medical Center
Hiking trail 23 mi Starr Mountain Horse Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 45°F 7°C | 29°F -2°C | 2.2 in 57 mm | 5.4 in136 mm | 15 |
| February | 58°F 14°C | 38°F 3°C | 5.1 in 130 mm | 0.8 in19 mm | 10 |
| March | 69°F 21°C | 45°F 7°C | 2.3 in 58 mm | 0.0 in0 mm | 13 |
| April | 75°F 24°C | 56°F 13°C | 5.4 in 138 mm | — | 9 |
| May | 76°F 25°C | 62°F 17°C | 8.6 in 218 mm | — | 3 |
| June | 87°F 30°C | 70°F 21°C | 3.7 in 95 mm | — | 8 |
| July | 91°F 33°C | 75°F 24°C | 3.0 in 76 mm | — | 12 |
| August | 85°F 30°C | 70°F 21°C | 4.0 in 102 mm | — | 10 |
| September | 84°F 29°C | 64°F 18°C | 2.4 in 60 mm | — | 17 |
| October | 73°F 23°C | 55°F 13°C | 3.5 in 90 mm | — | 18 |
| November | 64°F 18°C | 45°F 7°C | 2.6 in 66 mm | 0.1 in4 mm | 12 |
| December | 55°F 13°C | 38°F 3°C | 2.1 in 54 mm | 0.0 in1 mm | 8 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 3 |
| February | 10 | 3 |
| March | 13 | 2 |
| April | 9 | 7 |
| May | 3 | 12 |
| June | 8 | 7 |
| July | 12 | 5 |
| August | 10 | 6 |
| September | 17 | 4 |
| October | 18 | 2 |
| November | 12 | 1 |
| December | 8 | 1 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 39°F 4°C |
| February | 39°F 4°C |
| March | 43°F 6°C |
| April | 55°F 13°C |
| May | 66°F 19°C |
| June | 78°F 25°C |
| July | 81°F 27°C |
| August | 79°F 26°C |
| September | 72°F 22°C |
| October | 64°F 18°C |
| November | 52°F 11°C |
| December | 44°F 7°C |