| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 10.7° | 0.2° | 128.4mm | 10.6 | 46 |
| February | 13.3° | 2.1° | 126.1mm | 11.3 | 56 |
| March | 18.2° | 5.9° | 134.9mm | 11.1 | 72 |
| April | 23.1° | 9.9° | 119mm | 9.9 | 80 |
| May | 27.3° | 15.1° | 100.5mm | 10.4 | 78 |
| June | 31° | 19.5° | 99.8mm | 11 | 62 |
| July | 32.5° | 21.6° | 125.6mm | 12 | 54 |
| August | 32.3° | 21.2° | 102.4mm | 9.5 | 60 |
| September | 29.1° | 17.5° | 110.9mm | 7.8 | 76 |
| October | 23.5° | 10.8° | 87.1mm | 7.5 | 85 |
| November | 17° | 4.7° | 117.7mm | 9 | 72 |
| December | 12.2° | 1.8° | 131.2mm | 11.2 | 52 |
January in East Chattanooga averages a daily high of 10.7°C with nights around 0.2°C. Expect roughly 10.6 wet days totalling 128.4mm. Demanding conditions — pack for it and plan indoor options.
February in East Chattanooga averages a daily high of 13.3°C with nights around 2.1°C. Expect roughly 11.3 wet days totalling 126.1mm. Generally workable, with some weather to plan around.
March in East Chattanooga averages a daily high of 18.2°C with nights around 5.9°C. Expect roughly 11.1 wet days totalling 134.9mm. Generally workable, with some weather to plan around.
April in East Chattanooga averages a daily high of 23.1°C with nights around 9.9°C. Expect roughly 9.9 wet days totalling 119mm. Comfortable conditions for being outdoors all day.
May in East Chattanooga averages a daily high of 27.3°C with nights around 15.1°C. Expect roughly 10.4 wet days totalling 100.5mm. Comfortable conditions for being outdoors all day.
June in East Chattanooga averages a daily high of 31°C with nights around 19.5°C. Expect roughly 11 wet days totalling 99.8mm. Generally workable, with some weather to plan around.
July in East Chattanooga averages a daily high of 32.5°C with nights around 21.6°C. Expect roughly 12 wet days totalling 125.6mm. Demanding conditions — pack for it and plan indoor options.
August in East Chattanooga averages a daily high of 32.3°C with nights around 21.2°C. Expect roughly 9.5 wet days totalling 102.4mm. Generally workable, with some weather to plan around.
September in East Chattanooga averages a daily high of 29.1°C with nights around 17.5°C. Expect roughly 7.8 wet days totalling 110.9mm. Comfortable conditions for being outdoors all day.
October in East Chattanooga averages a daily high of 23.5°C with nights around 10.8°C. Expect roughly 7.5 wet days totalling 87.1mm. Comfortable conditions for being outdoors all day.
November in East Chattanooga averages a daily high of 17°C with nights around 4.7°C. Expect roughly 9 wet days totalling 117.7mm. Generally workable, with some weather to plan around.
December in East Chattanooga averages a daily high of 12.2°C with nights around 1.8°C. Expect roughly 11.2 wet days totalling 131.2mm. Demanding conditions — pack for it and plan indoor options.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. East Chattanooga peaks at 85.
Based on 30 years of records, April–May scores highest for comfort in East Chattanooga, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 32.5°C.
March is the wettest, averaging 134.9mm of rain across roughly 11.1 wet days.
January is the coolest month, with average daily highs around 10.7°C.