Salem (OR)
September
Weather in Salem, Oregon for September 2025
Your guide to Salem weather in September - trends and predictions
Until now, September 2025 in Salem is slightly cooler than the historical average by -1.2 °F.
The forecast for the next days in Salem predicts a temperature of 22.1 °F, which is cooler than the historical average.
In general, the average temperature in Salem at the beginning of September is 29 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.1 °F by the end of September.
Salem experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 38.9 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
21
Dry days
9
Rainy days
0
Snow days
24°/10°
Temperatures
13 km/h
Avg max wind
67 %
Avg humidity
Salem Weather September
Move between months or click on a day
Temperatures trend during September in Salem
See the weather trend as well as the moving average line
September weather in Salem day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Fog | 29° /14° | 0.1 mm | 7 | |
| Sept. 2 |  Thundery outbreaks possible | 29° /12° | 0.7 mm | 6 | |
| Sept. 3 | Mist | 30° /13° | 0.1 mm | 7 | |
| Sept. 4 | Mist | 30° /12° | 0.3 mm | 7 | |
| Sept. 5 | Mist | 31° /13° | 0 mm | 7 | |
| Sept. 6 |  Partly cloudy | 28° /13° | 0 mm | 7 | |
| Sept. 7 | Mist | 26° /13° | 0 mm | 6 | |
| Sept. 8 |  Sunny | 25° /12° | 6.9 mm | 6 | |
| Sept. 9 | Mist | 26° /12° | 1.4 mm | 6 | |
| Sept. 10 | Partly cloudy | 25° /12° | 0 mm | 6 | |
| Sept. 11 |  Overcast | 20° /12° | 5.9 mm | 4 | |
| Sept. 12 | Mist | 24° /11° | 0.1 mm | 5 | |
| Sept. 13 | Mist | 24° /10° | 0 mm | 6 | |
| Sept. 14 | Mist | 25° /10° | 0 mm | 6 | |
| Sept. 15 | Sunny | 26° /8° | 0 mm | 1.4 | |
| Sept. 16 | Sunny | 35° /10° | 0 mm | 1.4 | |
| Sept. 17 | Sunny | 26° /12° | 0 mm | 1.4 | |
| Sept. 18 | Sunny | 27° /12° | 0 mm | 1.3 | |
| Sept. 19 |  Patchy rain possible | 23° /14° | 0.5 mm | 0 | |
| Sept. 20 | Sunny | 24° /11° | 0 mm | 5 | |
| Sept. 21 | Patchy rain possible | 23° /12° | 0.3 mm | 4 | |
| Sept. 22 | Partly cloudy | 26° /14° | 0 mm | 5 | |
| Sept. 23 | Patchy rain possible | 19° /13° | 1.1 mm | 4 | |
| Sept. 24 | Patchy rain possible | 16° /11° | 1.2 mm | 3 | |
| Sept. 25 |  Moderate rain | 14° /10° | 6.7 mm | 3 | |
| Sept. 26 | Patchy rain possible | 16° /9° | 3.4 mm | 3 | |
| Sept. 27 | Partly cloudy | 16° /6° | 0 mm | 4 | |
| Sept. 28 | Partly cloudy | 18° /7° | 0 mm | 4 | |
| Sept. 29 | Patchy rain possible | 18° /8° | 0 mm | 5 | |
| Sept. 30 | Sunny | 22° /5° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Salem in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Salem forecast closer to your planned date for the most up-to-date weather information.
Change Month
Salem in September - FAQ
What are the expected maximum and minimum temperatures in Salem during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Salem during September?
In September, Salem can expect light to moderate rainfall, totaling 38.9 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Salem during September?
The average wind speed in Salem during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Salem
Explore the daily rainfall trends and prepare for Salems September weather 💧
UV exposure in Salem during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Salem weather pages
You are here
Where is Salem?Get accurate weather forecasts for Salem, located at latitude 44.943 and longitude -123.035. Stay updated with localized weather information tailored for Salem.
Found a mistake?
We appreciate your attention to details. Tell us here.