Click on a day for an hourly weather forecast
The temperatures in Salem in September are comfortable with low of 11°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Salem during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Salem in September 2025.
If you’re planning to visit Salem in the near future, we highly recommend that you review the 14 day weather forecast for Salem before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 2° | 12 | 18 | 1 | 208 mm | Bad | Salem in January |
| February | 10° / 2° | 11 | 15 | 2 | 167 mm | Awful | Salem in February |
| March | 12° / 3° | 12 | 18 | 1 | 195 mm | Bad | Salem in March |
| April | 15° / 4° | 9 | 20 | 0 | 134 mm | Ok | Salem in April |
| May | 19° / 6° | 6 | 25 | 0 | 90 mm | Good | Salem in May |
| June | 23° / 9° | 4 | 26 | 0 | 64 mm | Perfect | Salem in June |
| July | 27° / 12° | 1 | 30 | 0 | 11 mm | Perfect | Salem in July |
| August | 28° / 13° | 1 | 30 | 0 | 14 mm | Perfect | Salem in August |
| September | 25° / 11° | 4 | 26 | 0 | 72 mm | Perfect | Salem in September |
| October | 17° / 8° | 7 | 24 | 0 | 138 mm | Ok | Salem in October |
| November | 11° / 5° | 11 | 19 | 0 | 206 mm | Bad | Salem in November |
| December | 8° / 2° | 12 | 18 | 1 | 210 mm | Bad | Salem in December |