| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 6.1° | -4.4° | 94.1mm | 8.1 | 30 |
| February | 8° | -3.7° | 78.9mm | 7.7 | 38 |
| March | 12.5° | -0.2° | 108.8mm | 7.8 | 57 |
| April | 19.2° | 4.7° | 97.7mm | 8 | 81 |
| May | 24.1° | 10.1° | 99.4mm | 8.6 | 83 |
| June | 28.4° | 15° | 113.5mm | 8.4 | 78 |
| July | 30.9° | 17.9° | 126.6mm | 8.6 | 67 |
| August | 30.1° | 17.2° | 127.6mm | 7.3 | 73 |
| September | 26.5° | 13.4° | 104.5mm | 6.6 | 87 |
| October | 20.3° | 7.3° | 117mm | 7.1 | 86 |
| November | 13.9° | 1.4° | 88.9mm | 6.8 | 66 |
| December | 8.6° | -1.8° | 120mm | 9.2 | 39 |
January in Jackson averages a daily high of 6.1°C with nights around -4.4°C. Expect roughly 8.1 wet days totalling 94.1mm. A hard month to visit for comfort alone.
February in Jackson averages a daily high of 8°C with nights around -3.7°C. Expect roughly 7.7 wet days totalling 78.9mm. Demanding conditions — pack for it and plan indoor options.
March in Jackson averages a daily high of 12.5°C with nights around -0.2°C. Expect roughly 7.8 wet days totalling 108.8mm. Generally workable, with some weather to plan around.
April in Jackson averages a daily high of 19.2°C with nights around 4.7°C. Expect roughly 8 wet days totalling 97.7mm. Comfortable conditions for being outdoors all day.
May in Jackson averages a daily high of 24.1°C with nights around 10.1°C. Expect roughly 8.6 wet days totalling 99.4mm. Comfortable conditions for being outdoors all day.
June in Jackson averages a daily high of 28.4°C with nights around 15°C. Expect roughly 8.4 wet days totalling 113.5mm. Comfortable conditions for being outdoors all day.
July in Jackson averages a daily high of 30.9°C with nights around 17.9°C. Expect roughly 8.6 wet days totalling 126.6mm. Generally workable, with some weather to plan around.
August in Jackson averages a daily high of 30.1°C with nights around 17.2°C. Expect roughly 7.3 wet days totalling 127.6mm. Generally workable, with some weather to plan around.
September in Jackson averages a daily high of 26.5°C with nights around 13.4°C. Expect roughly 6.6 wet days totalling 104.5mm. Comfortable conditions for being outdoors all day.
October in Jackson averages a daily high of 20.3°C with nights around 7.3°C. Expect roughly 7.1 wet days totalling 117mm. Comfortable conditions for being outdoors all day.
November in Jackson averages a daily high of 13.9°C with nights around 1.4°C. Expect roughly 6.8 wet days totalling 88.9mm. Generally workable, with some weather to plan around.
December in Jackson averages a daily high of 8.6°C with nights around -1.8°C. Expect roughly 9.2 wet days totalling 120mm. 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. Jackson peaks at 87.
Based on 30 years of records, April–May scores highest for comfort in Jackson, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 30.9°C.
August is the wettest, averaging 127.6mm of rain across roughly 7.3 wet days.
January is the coolest month, with average daily highs around 6.1°C.