| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 8.9° | 2.1° | 163.2mm | 18.9 | 34 |
| February | 10.7° | 1.8° | 116.5mm | 16.1 | 40 |
| March | 13.2° | 3° | 111.7mm | 17.8 | 48 |
| April | 16.1° | 4.6° | 77.4mm | 15.4 | 58 |
| May | 20.2° | 7.8° | 56mm | 11.6 | 77 |
| June | 23.8° | 10.5° | 30.7mm | 7.9 | 84 |
| July | 28.8° | 12.9° | 5.2mm | 2 | 89 |
| August | 28.7° | 12.8° | 9.8mm | 3 | 87 |
| September | 25° | 10.3° | 40.6mm | 6.8 | 86 |
| October | 18° | 6.6° | 85.4mm | 13.2 | 67 |
| November | 11.9° | 3.9° | 156.6mm | 17.7 | 44 |
| December | 8.4° | 1.8° | 183.2mm | 19.2 | 33 |
January in Salem averages a daily high of 8.9°C with nights around 2.1°C. Expect roughly 18.9 wet days totalling 163.2mm. A hard month to visit for comfort alone.
February in Salem averages a daily high of 10.7°C with nights around 1.8°C. Expect roughly 16.1 wet days totalling 116.5mm. Demanding conditions — pack for it and plan indoor options.
March in Salem averages a daily high of 13.2°C with nights around 3°C. Expect roughly 17.8 wet days totalling 111.7mm. Demanding conditions — pack for it and plan indoor options.
April in Salem averages a daily high of 16.1°C with nights around 4.6°C. Expect roughly 15.4 wet days totalling 77.4mm. Generally workable, with some weather to plan around.
May in Salem averages a daily high of 20.2°C with nights around 7.8°C. Expect roughly 11.6 wet days totalling 56mm. Comfortable conditions for being outdoors all day.
June in Salem averages a daily high of 23.8°C with nights around 10.5°C. Expect roughly 7.9 wet days totalling 30.7mm. Comfortable conditions for being outdoors all day.
July in Salem averages a daily high of 28.8°C with nights around 12.9°C. Rain is rare — about 2 wet days and 5.2mm across the month. Comfortable conditions for being outdoors all day.
August in Salem averages a daily high of 28.7°C with nights around 12.8°C. Expect roughly 3 wet days totalling 9.8mm. Comfortable conditions for being outdoors all day.
September in Salem averages a daily high of 25°C with nights around 10.3°C. Expect roughly 6.8 wet days totalling 40.6mm. Comfortable conditions for being outdoors all day.
October in Salem averages a daily high of 18°C with nights around 6.6°C. Expect roughly 13.2 wet days totalling 85.4mm. Generally workable, with some weather to plan around.
November in Salem averages a daily high of 11.9°C with nights around 3.9°C. Expect roughly 17.7 wet days totalling 156.6mm. Demanding conditions — pack for it and plan indoor options.
December in Salem averages a daily high of 8.4°C with nights around 1.8°C. Expect roughly 19.2 wet days totalling 183.2mm. A hard month to visit for comfort alone.
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. Salem peaks at 89.
Based on 30 years of records, June–September scores highest for comfort in Salem, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.8°C.
December is the wettest, averaging 183.2mm of rain across roughly 19.2 wet days.
December is the coolest month, with average daily highs around 8.4°C.