Oregon weather in September: Statewide normals and every place, NOAA 1991-2020
In September, Oregon's statewide normal high is 74°F and normal low 44°F; normal highs run from 64°F in Newport to 87°F in Cave Junction (NOAA 1991-2020 normals).
- Statewide normal high
- 74°FSeptember, 1991-2020
- Statewide normal low
- 44°FSeptember, 1991-2020
- Statewide normal precipitation
- 0.99 inSeptember
- Warmest place
- 87°Fnormal high, Cave Junction
- Coolest place
- 64°Fnormal high, Newport
Where is Oregon warmest and wettest in September?
Cave Junction has the warmest September afternoons (87°F) and Newport the coolest (64°F). Tillamook gets the most precipitation (3.58 in) and Boardman the least (0.25 in).
Statewide, September averaged 59.4°F in 2021, 62.5°F in 2022, 57.7°F in 2023, 61.4°F in 2024, 62.7°F in 2025, against a 1991-2020 normal of 59.2°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Portland | 77°F | 54°F | 1.52 | 0.0 |
| Salem | 78°F | 51°F | 1.46 | – |
| Eugene | 78°F | 48°F | 1.39 | – |
| Hillsboro | 76°F | 48°F | 1.38 | – |
| Bend | 76°F | 41°F | 0.31 | 0.0 |
| Beaverton | 77°F | 50°F | – | – |
| Medford | 84°F | 51°F | 0.48 | 0.0 |
| Corvallis | 78°F | 48°F | 1.49 | 0.0 |
| Grants Pass | 84°F | 48°F | 0.56 | 0.0 |
| Oregon City | 78°F | 53°F | 1.64 | – |
| Redmond | 79°F | 41°F | 0.37 | – |
| McMinnville | 77°F | 48°F | 1.30 | – |
| Forest Grove | 76°F | 49°F | 1.34 | 0.0 |
| Roseburg | 80°F | 52°F | 0.85 | – |
| Klamath Falls | 78°F | 39°F | 0.30 | – |
| Ashland | 81°F | 43°F | 0.50 | 0.0 |
| Lebanon | 79°F | 51°F | – | – |
| Hermiston | 81°F | 48°F | 0.33 | – |
| Dallas | 78°F | 49°F | 1.60 | – |
| Pendleton | 78°F | 49°F | 0.53 | 0.0 |
| The Dalles | 81°F | 49°F | 0.32 | 0.0 |
| Coos Bay | 66°F | 47°F | 1.77 | – |
| Troutdale | 75°F | 51°F | 1.86 | – |
| St. Helens | 74°F | 52°F | – | – |
| La Grande | 77°F | 45°F | 0.67 | 0.0 |
| Ontario | 83°F | 49°F | 0.29 | – |
| Prineville | 79°F | 42°F | 0.31 | 0.0 |
| Newport | 64°F | 49°F | 2.33 | 0.0 |
| Cottage Grove | 77°F | 46°F | 1.54 | 0.0 |
| Silverton | 74°F | 52°F | 1.66 | 0.0 |
| Baker City | 79°F | 39°F | 0.44 | – |
| Molalla | 77°F | 52°F | 1.95 | – |
| North Bend | 67°F | 51°F | 1.55 | 0.0 |
| Astoria | 68°F | 51°F | 2.67 | – |
| Florence | 66°F | 47°F | 2.26 | 0.0 |
| Stayton | 75°F | 49°F | 2.02 | – |
| Scappoose | 76°F | 50°F | 1.56 | – |
| Madras | 78°F | 43°F | 0.34 | 0.0 |
| Seaside | 67°F | 50°F | 2.91 | 0.0 |
| Milton-Freewater | 80°F | 55°F | 0.61 | 0.0 |
| Brookings | 67°F | 52°F | 1.46 | – |
| Estacada | 77°F | 50°F | 2.15 | 0.0 |
| Tillamook | 68°F | 47°F | 3.58 | 0.0 |
| Boardman | 81°F | 50°F | 0.25 | 0.0 |
| Coquille | 73°F | 48°F | 1.26 | 0.0 |
| Bandon | 68°F | 50°F | 1.40 | 0.0 |
| Nyssa | 79°F | 49°F | 0.54 | 0.0 |
| Oakridge | 76°F | 46°F | 1.58 | 0.0 |
| Sisters | 76°F | 36°F | 0.54 | – |
| Burns | 78°F | 37°F | 0.38 | – |
| Vernonia | 73°F | 43°F | 1.79 | 0.0 |
| Lakeview | 76°F | 40°F | 0.62 | 0.0 |
| Gold Beach | 69°F | 52°F | 1.41 | 0.0 |
| Union | 77°F | 43°F | 0.70 | 0.0 |
| Cave Junction | 87°F | 44°F | 0.83 | 0.0 |
| Vale | 80°F | 44°F | 0.40 | – |
| Keno | 79°F | 39°F | 0.50 | 0.0 |
| Clatskanie | 72°F | 48°F | 2.06 | 0.0 |
| Elgin | 78°F | 40°F | 0.96 | – |
| John Day | 77°F | 39°F | 0.52 | 0.0 |
| Ruch | 85°F | 45°F | 0.58 | – |
| Sunriver | 76°F | 34°F | 0.75 | – |
| Cascade Locks | 76°F | 51°F | – | – |
| Pilot Rock | 80°F | 45°F | 0.60 | 0.0 |
| Riddle | 84°F | 49°F | 0.71 | 0.0 |
| Drain | 80°F | 46°F | 1.42 | 0.0 |
| Joseph | 71°F | 43°F | 1.12 | 0.1 |
| Aurora | 77°F | 52°F | 1.58 | – |
| Heppner | 77°F | 48°F | 0.43 | 0.0 |
| Port Orford | 67°F | 51°F | 1.54 | – |
| Falls City | 75°F | 48°F | 2.06 | 0.0 |
| Yachats | 65°F | 50°F | 2.09 | 0.0 |
| Lacomb | 76°F | 46°F | 2.28 | 0.0 |
| Wallowa | 79°F | 38°F | 0.74 | 0.0 |
| Prospect | 84°F | 44°F | 1.16 | 0.0 |
| Powers | 79°F | 49°F | 1.13 | 0.0 |
| Condon | 75°F | 46°F | 0.47 | 0.0 |
| Dufur | 79°F | 45°F | 0.44 | 0.0 |
| Arlington | 80°F | 53°F | 0.33 | 0.0 |
| Mapleton | 77°F | 51°F | 2.09 | – |
| Huntington | 82°F | 51°F | 0.26 | – |
| Fossil | 74°F | 40°F | 0.55 | – |
| Scotts Mills | 70°F | 49°F | – | – |
| Moro | 76°F | 45°F | 0.43 | 0.0 |
| Halfway | 79°F | 42°F | 0.68 | 0.0 |
| Silver Lake | 76°F | 36°F | 0.46 | – |
| Langlois | 69°F | 49°F | 1.54 | 0.0 |
| Parkdale | 73°F | 43°F | 1.06 | 0.0 |
| Paisley | 77°F | 40°F | – | – |
| Detroit | 74°F | 53°F | 2.81 | 0.0 |
| Elkton | 81°F | 46°F | 1.41 | – |
| Winchester Bay | 71°F | 50°F | – | – |
| Cloverdale | 69°F | 50°F | 2.98 | 0.0 |
| Richland | 80°F | 43°F | – | – |
| Long Creek | 76°F | 40°F | 0.66 | 0.0 |
| Seneca | 73°F | 27°F | 0.53 | – |
| Mitchell | 75°F | 45°F | 0.50 | – |
| Dayville | 82°F | 47°F | 0.56 | – |
| Alsea | 69°F | 46°F | 2.68 | 0.0 |
| Monument | 84°F | 42°F | 0.58 | – |
| Cascadia | 74°F | 44°F | 2.27 | – |
| Government Camp | 64°F | 45°F | 3.06 | 0.2 |
| Chemult | 76°F | 30°F | 0.53 | – |
| Meacham | 70°F | 34°F | 1.21 | 0.0 |
| Antelope | 78°F | 44°F | 0.50 | 0.0 |
| Alkali Lake | 77°F | 38°F | 0.50 | – |
| Austin (3 mi S) | 73°F | 35°F | 0.79 | – |
| Barnes Station | 80°F | 41°F | 0.43 | 0.0 |
| Belknap Springs (8 mi N) | 75°F | 45°F | 2.10 | 0.0 |
| Bly (4 mi SE) | 78°F | 38°F | 0.55 | – |
| Bonneville Dam | 74°F | 53°F | 2.62 | 0.0 |
| Brothers | 73°F | 36°F | – | – |
| Chiloquin 12 NW (Fort Klamath) | 78°F | 34°F | 0.48 | 0.0 |
| Cougar Dam | 82°F | 54°F | 1.87 | – |
| Crater Lake NPS Headquarters | 63°F | 37°F | 1.93 | 1.8 |
| Dorena | 76°F | 46°F | 1.76 | – |
| Drewsey | 79°F | 37°F | 0.44 | 0.0 |
| Enterprise (20 mi NNE) | 80°F | 36°F | 0.94 | – |
| Fern Ridge-Veneta | 77°F | 47°F | 1.35 | – |
| Fields | 78°F | 47°F | – | – |
| Fort Clatsop National Mem | 70°F | 49°F | – | – |
| Foster Dam | 76°F | 47°F | 1.99 | 0.0 |
| Gerber Dam | 78°F | 39°F | – | – |
| Grizzly | 75°F | 36°F | 0.55 | 0.0 |
| Hart Mountain Refuge | 74°F | 39°F | 0.71 | – |
| Headworks Portland Water B | 72°F | 51°F | 3.42 | 0.0 |
| Honeyman State Park | 66°F | 50°F | 2.01 | – |
| Hood River Experiment Station | 76°F | 47°F | 0.71 | 0.0 |
| Howard Prairie Dam | 72°F | 40°F | 0.68 | 0.1 |
| Idleyld Park (4 mi NE) | 78°F | 46°F | 1.62 | 0.0 |
| Illahe | 86°F | 48°F | – | – |
| Kent | 77°F | 47°F | – | – |
| Laurel Mountain | 67°F | 48°F | 3.99 | – |
| Leaburg (1 mi SW) | 78°F | 48°F | 2.13 | 0.0 |
| Lemolo Lake (3 mi NNW) | 72°F | 43°F | 1.86 | 0.0 |
| Lookout Point Dam | 74°F | 52°F | 1.63 | 0.0 |
| Lost Creek Dam | 84°F | 45°F | 0.79 | 0.0 |
| Malheur Branch Experiment Station | 81°F | 48°F | 0.41 | 0.0 |
| Malheur Refuge Headquarters | 75°F | 40°F | 0.65 | – |
| Marion Forks Fish Hatchery | 74°F | 41°F | 2.23 | 0.0 |
| McDermitt (26 mi N) | 82°F | 43°F | 0.31 | – |
| McKenzie River Ranger Station | 76°F | 45°F | 2.41 | – |
| McNary Dam #2 | 78°F | 53°F | 0.40 | – |
| Nature Park-Beaverton | 76°F | 53°F | 1.41 | – |
| North Willamette Experiment Station | 76°F | 51°F | 1.73 | – |
| O O Ranch | 76°F | 35°F | – | – |
| Odell Lake-East | 68°F | 36°F | 0.96 | 0.0 |
| Otis (2 mi NE) | 70°F | 49°F | 3.38 | 0.0 |
| Owyhee Dam | 83°F | 45°F | 0.40 | 0.0 |
| Paulina | 79°F | 35°F | – | – |
| Pelton Dam | 82°F | 46°F | 0.30 | – |
| Portland Troutdale Airport | 76°F | 52°F | 1.75 | – |
| Rex (1 mi S) | 75°F | 52°F | 1.63 | 0.0 |
| Riley (10 mi WSW) | 75°F | 40°F | 0.40 | – |
| Riverside (7 mi SSW) | 82°F | 37°F | – | – |
| Rockville (5 mi N) | 78°F | 39°F | – | – |
| Rome (2 mi NW) | 82°F | 38°F | 0.42 | – |
| Rome St Airport | 82°F | 42°F | 0.39 | – |
| Santiam Junction | 69°F | 39°F | 2.28 | – |
| Sexton Summit | 70°F | 51°F | 0.84 | – |
| Sheaville (1 mi SE) | 79°F | 44°F | 0.34 | – |
| Silver Creek Falls | 70°F | 46°F | 2.27 | – |
| Squaw Butte-Northern Great Bas | 74°F | 45°F | 0.51 | – |
| Summer Lake (1 mi S) | 81°F | 40°F | 0.60 | 0.0 |
| The Poplars | 76°F | 35°F | 0.50 | 0.0 |
| Three Lynx | 73°F | 48°F | 2.11 | 0.0 |
| Toketee Falls | 76°F | 46°F | 1.48 | 0.0 |
| Westfall | 80°F | 45°F | 0.32 | – |
| Wickiup Dam | 75°F | 38°F | 0.61 | 0.0 |
| Winchester | 81°F | 49°F | 0.94 | – |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.