| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 8.8° | -2.7° | 136.1mm | 11.2 | 35 |
| February | 11.5° | -0.8° | 133.4mm | 11.1 | 46 |
| March | 16.5° | 2.8° | 127.1mm | 11.7 | 65 |
| April | 21.4° | 7.1° | 128.3mm | 10.3 | 79 |
| May | 25.9° | 12.8° | 115.4mm | 11.1 | 78 |
| June | 29.7° | 17.2° | 104.6mm | 10.1 | 69 |
| July | 31.1° | 19.7° | 154.6mm | 11.3 | 61 |
| August | 31.2° | 19° | 89.6mm | 8.8 | 66 |
| September | 28.3° | 15.5° | 105.3mm | 7.8 | 79 |
| October | 22.3° | 8.3° | 76.1mm | 7.6 | 85 |
| November | 15.9° | 2.2° | 99.9mm | 8.3 | 70 |
| December | 10.7° | -0.9° | 146.1mm | 10.7 | 44 |
January in Knoxville averages a daily high of 8.8°C with nights around -2.7°C. Expect roughly 11.2 wet days totalling 136.1mm. Demanding conditions — pack for it and plan indoor options.
February in Knoxville averages a daily high of 11.5°C with nights around -0.8°C. Expect roughly 11.1 wet days totalling 133.4mm. Demanding conditions — pack for it and plan indoor options.
March in Knoxville averages a daily high of 16.5°C with nights around 2.8°C. Expect roughly 11.7 wet days totalling 127.1mm. Generally workable, with some weather to plan around.
April in Knoxville averages a daily high of 21.4°C with nights around 7.1°C. Expect roughly 10.3 wet days totalling 128.3mm. Comfortable conditions for being outdoors all day.
May in Knoxville averages a daily high of 25.9°C with nights around 12.8°C. Expect roughly 11.1 wet days totalling 115.4mm. Comfortable conditions for being outdoors all day.
June in Knoxville averages a daily high of 29.7°C with nights around 17.2°C. Expect roughly 10.1 wet days totalling 104.6mm. Generally workable, with some weather to plan around.
July in Knoxville averages a daily high of 31.1°C with nights around 19.7°C. Expect roughly 11.3 wet days totalling 154.6mm. Generally workable, with some weather to plan around.
August in Knoxville averages a daily high of 31.2°C with nights around 19°C. Expect roughly 8.8 wet days totalling 89.6mm. Generally workable, with some weather to plan around.
September in Knoxville averages a daily high of 28.3°C with nights around 15.5°C. Expect roughly 7.8 wet days totalling 105.3mm. Comfortable conditions for being outdoors all day.
October in Knoxville averages a daily high of 22.3°C with nights around 8.3°C. Expect roughly 7.6 wet days totalling 76.1mm. Comfortable conditions for being outdoors all day.
November in Knoxville averages a daily high of 15.9°C with nights around 2.2°C. Expect roughly 8.3 wet days totalling 99.9mm. Generally workable, with some weather to plan around.
December in Knoxville averages a daily high of 10.7°C with nights around -0.9°C. Expect roughly 10.7 wet days totalling 146.1mm. 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. Knoxville peaks at 85.
Based on 30 years of records, April–May scores highest for comfort in Knoxville, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 31.2°C.
July is the wettest, averaging 154.6mm of rain across roughly 11.3 wet days.
January is the coolest month, with average daily highs around 8.8°C.