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The temperatures in Eugene in September are quite cold with temperatures between 9°C and 25°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Eugene 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 Eugene in September 2025.
If you’re planning to visit Eugene in the near future, we highly recommend that you review the 14 day weather forecast for Eugene before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 10° / 1° | 9 | 21 | 1 | 95 mm | Bad | Eugene in January |
| February | 10° / 1° | 9 | 17 | 2 | 97 mm | Awful | Eugene in February |
| March | 12° / 2° | 10 | 20 | 1 | 102 mm | Bad | Eugene in March |
| April | 15° / 3° | 7 | 22 | 1 | 74 mm | Ok | Eugene in April |
| May | 19° / 5° | 5 | 26 | 0 | 55 mm | Good | Eugene in May |
| June | 23° / 7° | 3 | 27 | 0 | 39 mm | Perfect | Eugene in June |
| July | 27° / 10° | 1 | 30 | 0 | 7 mm | Perfect | Eugene in July |
| August | 28° / 10° | 1 | 30 | 0 | 9 mm | Perfect | Eugene in August |
| September | 25° / 9° | 3 | 27 | 0 | 39 mm | Perfect | Eugene in September |
| October | 18° / 6° | 6 | 25 | 0 | 69 mm | Good | Eugene in October |
| November | 12° / 3° | 9 | 21 | 0 | 106 mm | Bad | Eugene in November |
| December | 8° / 1° | 10 | 20 | 1 | 102 mm | Bad | Eugene in December |