| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 8.2° | -2.8° | 97.7mm | 13.5 | 28 |
| February | 10.9° | -1.1° | 101.4mm | 12.7 | 41 |
| March | 15.4° | 1.9° | 93.1mm | 12.8 | 60 |
| April | 20.6° | 6.1° | 98.6mm | 12.3 | 75 |
| May | 25° | 11.8° | 113.4mm | 13 | 74 |
| June | 28.4° | 15.9° | 120.8mm | 13 | 68 |
| July | 29.8° | 18° | 146.5mm | 13.7 | 61 |
| August | 29.9° | 17.5° | 109.3mm | 11.8 | 65 |
| September | 27° | 13.8° | 84.2mm | 9.2 | 82 |
| October | 21.5° | 7.5° | 68.3mm | 9.2 | 82 |
| November | 15.1° | 1.2° | 81.1mm | 10.4 | 62 |
| December | 10° | -1.4° | 87.3mm | 13.3 | 36 |
January in Johnson City averages a daily high of 8.2°C with nights around -2.8°C. Expect roughly 13.5 wet days totalling 97.7mm. A hard month to visit for comfort alone.
February in Johnson City averages a daily high of 10.9°C with nights around -1.1°C. Expect roughly 12.7 wet days totalling 101.4mm. Demanding conditions — pack for it and plan indoor options.
March in Johnson City averages a daily high of 15.4°C with nights around 1.9°C. Expect roughly 12.8 wet days totalling 93.1mm. Generally workable, with some weather to plan around.
April in Johnson City averages a daily high of 20.6°C with nights around 6.1°C. Expect roughly 12.3 wet days totalling 98.6mm. Comfortable conditions for being outdoors all day.
May in Johnson City averages a daily high of 25°C with nights around 11.8°C. Expect roughly 13 wet days totalling 113.4mm. Generally workable, with some weather to plan around.
June in Johnson City averages a daily high of 28.4°C with nights around 15.9°C. Expect roughly 13 wet days totalling 120.8mm. Generally workable, with some weather to plan around.
July in Johnson City averages a daily high of 29.8°C with nights around 18°C. Expect roughly 13.7 wet days totalling 146.5mm. Generally workable, with some weather to plan around.
August in Johnson City averages a daily high of 29.9°C with nights around 17.5°C. Expect roughly 11.8 wet days totalling 109.3mm. Generally workable, with some weather to plan around.
September in Johnson City averages a daily high of 27°C with nights around 13.8°C. Expect roughly 9.2 wet days totalling 84.2mm. Comfortable conditions for being outdoors all day.
October in Johnson City averages a daily high of 21.5°C with nights around 7.5°C. Expect roughly 9.2 wet days totalling 68.3mm. Comfortable conditions for being outdoors all day.
November in Johnson City averages a daily high of 15.1°C with nights around 1.2°C. Expect roughly 10.4 wet days totalling 81.1mm. Generally workable, with some weather to plan around.
December in Johnson City averages a daily high of 10°C with nights around -1.4°C. Expect roughly 13.3 wet days totalling 87.3mm. 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. Johnson City peaks at 82.
Based on 30 years of records, April–May scores highest for comfort in Johnson City, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 29.9°C.
July is the wettest, averaging 146.5mm of rain across roughly 13.7 wet days.
January is the coolest month, with average daily highs around 8.2°C.