Weather in Eugene, Oregon for September 2026
Until now, September 2026 in Eugene is cooler than usual, with temperatures averaging 21.9 °F, this is 3.3 °F below the typical seasonal average.
Expect cooler weather in the next days in Eugene with the forecast suggesting a temperature of 23.7 °F, lower than the historical average.
In general, the average temperature in Eugene at the beginning of September is 26.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.7 °F by the end of September.
The climate of Eugene in September is notably wet, with an average of 13 rainy days, and a total of 51.3 mm of precipitation.
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Eugene Weather September
Temperatures trend during September in Eugene
September weather in Eugene day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 27° /13° | 0.2 mm | 5 | |
| Sept. 2 | Light rain shower | 25° /11° | 23.2 mm | 5 | |
| Sept. 3 |  Fog | 26° /11° | 1 mm | 5 | |
| Sept. 4 |  Light rain | 27° /11° | 4.7 mm | 6 | |
| Sept. 5 |  Overcast | 27° /11° | 0 mm | 6 | |
| Sept. 6 | Mist | 26° /11° | 0.1 mm | 6 | |
| Sept. 7 | Overcast | 27° /11° | 0 mm | 6 | |
| Sept. 8 | Mist | 26° /10° | 1.1 mm | 6 | |
| Sept. 9 |  Sunny | 27° /10° | 0 mm | 6 | |
| Sept. 10 | Overcast | 26° /11° | 0 mm | 6 | |
| Sept. 11 | Overcast | 20° /10° | 2.6 mm | 5 | |
| Sept. 12 | Mist | 23° /10° | 1.6 mm | 5 | |
| Sept. 13 | Mist | 23° /8° | 3.2 mm | 5 | |
| Sept. 14 |  Partly cloudy | 24° /8° | 1.5 mm | 6 | |
| Sept. 15 | Sunny | 25° /8° | 0.2 mm | 6 | |
| Sept. 16 | Partly cloudy | 28° /9° | 0 mm | 7 | |
| Sept. 17 | Overcast | 26° /11° | 0 mm | 4.3 | |
| Sept. 18 | Sunny | 25° /11° | 0 mm | 5.3 | |
| Sept. 19 | Partly cloudy | 25° /9° | 0 mm | 5.2 | |
| Sept. 20 | Sunny | 26° /11° | 0 mm | 5.5 | |
| Sept. 21 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 22 | Sunny | 22° /7° | 0 mm | 6 | |
| Sept. 23 | Sunny | 27° /10° | 0 mm | 7 | |
| Sept. 24 | Sunny | 30° /13° | 0 mm | 7 | |
| Sept. 25 | Partly cloudy | 30° /15° | 0 mm | 7 | |
| Sept. 26 | Overcast | 19° /12° | 0.3 mm | 4 | |
| Sept. 27 | Overcast | 18° /7° | 0 mm | 5 | |
| Sept. 28 | Overcast | 20° /6° | 0 mm | 6 | |
| Sept. 29 | Overcast | 21° /6° | 0 mm | 6 | |
| Sept. 30 | Overcast | 21° /8° | 0 mm | 6 | |
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Eugene in September - FAQ
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September rainfall patterns in Eugene
UV exposure in Eugene during September
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