Oregon weather in May: Statewide normals and every place, NOAA 1991-2020
In May, Oregon's statewide normal high is 64°F and normal low 39°F; normal highs run from 54°F in Government Camp to 76°F in Ontario (NOAA 1991-2020 normals).
- Statewide normal high
- 64°FMay, 1991-2020
- Statewide normal low
- 39°FMay, 1991-2020
- Statewide normal precipitation
- 2.37 inMay
- Warmest place
- 76°Fnormal high, Ontario
- Coolest place
- 54°Fnormal high, Government Camp
Where is Oregon warmest and wettest in May?
Ontario has the warmest May afternoons (76°F) and Government Camp the coolest (54°F). Detroit gets the most precipitation (6.02 in) and Arlington the least (0.75 in). The most snow falls in Government Camp (4.2 inches).
Statewide, May averaged 52.0°F in 2021, 48.1°F in 2022, 55.3°F in 2023, 50.1°F in 2024, 53.2°F in 2025, 55.3°F in 2026, against a 1991-2020 normal of 51.9°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Portland | 69°F | 49°F | 2.51 | 0.0 |
| Salem | 69°F | 46°F | 2.25 | – |
| Eugene | 68°F | 44°F | 2.46 | – |
| Hillsboro | 69°F | 45°F | 2.02 | – |
| Bend | 66°F | 37°F | 0.97 | 0.0 |
| Beaverton | 70°F | 46°F | – | – |
| Medford | 74°F | 47°F | 1.34 | 0.0 |
| Corvallis | 68°F | 45°F | 2.31 | 0.0 |
| Grants Pass | 74°F | 46°F | 1.39 | 0.0 |
| Oregon City | 71°F | 48°F | 2.54 | – |
| Redmond | 69°F | 38°F | 1.20 | – |
| McMinnville | 68°F | 44°F | 1.99 | – |
| Forest Grove | 68°F | 45°F | 2.19 | 0.0 |
| Roseburg | 71°F | 48°F | 2.09 | – |
| Klamath Falls | 67°F | 36°F | 1.04 | – |
| Ashland | 71°F | 41°F | 1.64 | 0.0 |
| Lebanon | 69°F | 47°F | – | – |
| Hermiston | 76°F | 46°F | 0.83 | – |
| Dallas | 68°F | 45°F | 2.36 | – |
| Pendleton | 71°F | 45°F | 1.45 | 0.0 |
| The Dalles | 73°F | 47°F | 0.76 | 0.0 |
| Coos Bay | 60°F | 44°F | 2.87 | – |
| Troutdale | 68°F | 48°F | 3.31 | – |
| St. Helens | 67°F | 46°F | – | – |
| La Grande | 68°F | 43°F | 2.24 | 0.0 |
| Ontario | 76°F | 48°F | 1.17 | – |
| Prineville | 69°F | 40°F | 1.38 | 0.0 |
| Newport | 58°F | 46°F | 2.96 | 0.0 |
| Cottage Grove | 68°F | 44°F | 3.11 | 0.0 |
| Silverton | 67°F | 47°F | 2.88 | 0.0 |
| Baker City | 70°F | 39°F | 1.46 | – |
| Molalla | 68°F | 47°F | 3.38 | – |
| North Bend | 61°F | 48°F | 2.95 | 0.0 |
| Astoria | 61°F | 46°F | 3.40 | – |
| Florence | 60°F | 44°F | 3.87 | 0.0 |
| Stayton | 67°F | 46°F | 3.29 | – |
| Scappoose | 68°F | 46°F | 2.49 | – |
| Madras | 69°F | 39°F | 1.30 | 0.0 |
| Seaside | 60°F | 46°F | 3.87 | 0.0 |
| Milton-Freewater | 74°F | 50°F | 1.77 | 0.0 |
| Brookings | 62°F | 48°F | 3.37 | – |
| Estacada | 69°F | 46°F | 3.87 | 0.0 |
| Tillamook | 61°F | 44°F | 4.56 | 0.0 |
| Boardman | 75°F | 48°F | 0.80 | 0.0 |
| Coquille | 65°F | 45°F | 2.73 | 0.0 |
| Bandon | 62°F | 47°F | 2.98 | 0.0 |
| Nyssa | 72°F | 48°F | 1.15 | 0.0 |
| Oakridge | 66°F | 43°F | 3.23 | 0.0 |
| Sisters | 66°F | 34°F | 1.53 | – |
| Burns | 68°F | 37°F | 1.27 | – |
| Vernonia | 66°F | 40°F | 2.39 | 0.0 |
| Lakeview | 65°F | 38°F | 1.37 | 1.6 |
| Gold Beach | 62°F | 47°F | 3.45 | 0.0 |
| Union | 68°F | 41°F | 2.47 | 0.1 |
| Cave Junction | 76°F | 42°F | 2.09 | 0.0 |
| Vale | 74°F | 44°F | 1.29 | – |
| Keno | 68°F | 37°F | 1.32 | 0.2 |
| Clatskanie | 65°F | 44°F | 2.68 | 0.0 |
| Elgin | 69°F | 39°F | 2.39 | – |
| John Day | 66°F | 37°F | 1.83 | 0.0 |
| Ruch | 75°F | 42°F | 1.42 | – |
| Sunriver | 65°F | 33°F | 1.71 | – |
| Cascade Locks | 68°F | 47°F | – | – |
| Pilot Rock | 72°F | 43°F | 2.09 | 0.0 |
| Riddle | 74°F | 47°F | 1.86 | 0.0 |
| Drain | 71°F | 44°F | 2.69 | 0.0 |
| Joseph | 61°F | 39°F | 2.61 | 1.1 |
| Aurora | 69°F | 48°F | 2.55 | – |
| Heppner | 69°F | 45°F | 1.71 | 0.0 |
| Port Orford | 61°F | 48°F | 3.39 | – |
| Falls City | 65°F | 43°F | 2.89 | 0.0 |
| Yachats | 59°F | 47°F | 4.35 | 0.0 |
| Lacomb | 67°F | 43°F | 3.83 | 0.0 |
| Wallowa | 69°F | 38°F | 2.16 | 0.1 |
| Prospect | 71°F | 41°F | 2.59 | 0.0 |
| Powers | 68°F | 46°F | 2.90 | 0.0 |
| Condon | 67°F | 42°F | 1.65 | 0.0 |
| Dufur | 72°F | 41°F | 1.14 | 0.0 |
| Arlington | 73°F | 50°F | 0.75 | 0.0 |
| Mapleton | 68°F | 48°F | 3.88 | – |
| Huntington | 74°F | 48°F | 1.45 | – |
| Fossil | 66°F | 37°F | 2.12 | – |
| Scotts Mills | 61°F | 41°F | – | – |
| Moro | 67°F | 42°F | 0.96 | 0.0 |
| Halfway | 71°F | 41°F | 1.78 | 0.0 |
| Silver Lake | 66°F | 34°F | 1.48 | – |
| Langlois | 62°F | 46°F | 3.52 | 0.0 |
| Parkdale | 65°F | 41°F | 1.66 | 0.0 |
| Paisley | 67°F | 39°F | – | – |
| Detroit | 65°F | 46°F | 6.02 | 0.0 |
| Elkton | 72°F | 43°F | 2.56 | – |
| Winchester Bay | 63°F | 46°F | – | – |
| Cloverdale | 62°F | 46°F | 4.26 | 0.0 |
| Richland | 72°F | 41°F | – | – |
| Long Creek | 65°F | 37°F | 2.34 | 0.1 |
| Seneca | 62°F | 32°F | 1.71 | – |
| Mitchell | 65°F | 39°F | 1.94 | – |
| Dayville | 73°F | 44°F | 1.95 | – |
| Alsea | 64°F | 44°F | 4.06 | 0.0 |
| Monument | 74°F | 41°F | 2.10 | – |
| Cascadia | 65°F | 42°F | 4.60 | – |
| Government Camp | 54°F | 36°F | 5.75 | 4.2 |
| Chemult | 63°F | 30°F | 1.49 | – |
| Meacham | 61°F | 34°F | 3.55 | 0.8 |
| Antelope | 68°F | 39°F | 1.99 | 0.0 |
| Alkali Lake | 67°F | 36°F | 1.57 | – |
| Austin (3 mi S) | 62°F | 34°F | 1.84 | – |
| Barnes Station | 69°F | 39°F | 1.44 | 0.2 |
| Belknap Springs (8 mi N) | 65°F | 41°F | 4.19 | 0.0 |
| Bly (4 mi SE) | 66°F | 37°F | 1.47 | – |
| Bonneville Dam | 67°F | 48°F | 4.08 | 0.0 |
| Brothers | 63°F | 32°F | – | – |
| Chiloquin 12 NW (Fort Klamath) | 66°F | 33°F | 1.49 | 0.3 |
| Cougar Dam | 74°F | 50°F | 4.33 | – |
| Crater Lake NPS Headquarters | 49°F | 29°F | 3.65 | 14.5 |
| Dorena | 67°F | 44°F | 3.45 | – |
| Drewsey | 70°F | 37°F | 1.11 | 0.0 |
| Enterprise (20 mi NNE) | 69°F | 36°F | 2.08 | – |
| Fern Ridge-Veneta | 68°F | 44°F | 2.31 | – |
| Fields | 69°F | 42°F | – | – |
| Fort Clatsop National Mem | 64°F | 45°F | – | – |
| Foster Dam | 67°F | 44°F | 3.80 | 0.0 |
| Gerber Dam | 64°F | 37°F | – | – |
| Grizzly | 66°F | 33°F | 1.50 | 0.2 |
| Hart Mountain Refuge | 62°F | 35°F | 2.09 | – |
| Headworks Portland Water B | 64°F | 46°F | 5.72 | 0.0 |
| Honeyman State Park | 60°F | 45°F | 3.09 | – |
| Hood River Experiment Station | 68°F | 46°F | 1.32 | 0.0 |
| Howard Prairie Dam | 60°F | 36°F | 2.04 | 1.2 |
| Idleyld Park (4 mi NE) | 70°F | 43°F | 3.66 | 0.0 |
| Illahe | 75°F | 43°F | – | – |
| Kent | 68°F | 41°F | – | – |
| Laurel Mountain | 56°F | 39°F | 5.29 | – |
| Leaburg (1 mi SW) | 68°F | 45°F | 4.28 | 0.0 |
| Lemolo Lake (3 mi NNW) | 61°F | 38°F | 4.02 | 1.8 |
| Lookout Point Dam | 65°F | 47°F | 3.52 | 0.0 |
| Lost Creek Dam | 72°F | 43°F | 2.03 | 0.0 |
| Malheur Branch Experiment Station | 74°F | 47°F | 1.29 | 0.0 |
| Malheur Refuge Headquarters | 68°F | 39°F | 1.80 | – |
| Marion Forks Fish Hatchery | 64°F | 38°F | 4.39 | 0.2 |
| McDermitt (26 mi N) | 72°F | 38°F | 1.40 | – |
| McKenzie River Ranger Station | 71°F | 43°F | 4.44 | – |
| McNary Dam #2 | 72°F | 48°F | 0.75 | – |
| Nature Park-Beaverton | 70°F | 50°F | 2.16 | – |
| North Willamette Experiment Station | 68°F | 47°F | 2.44 | – |
| O O Ranch | 65°F | 35°F | – | – |
| Odell Lake-East | 56°F | 34°F | 1.84 | 1.0 |
| Otis (2 mi NE) | 63°F | 45°F | 4.69 | 0.0 |
| Owyhee Dam | 75°F | 42°F | 1.14 | 0.0 |
| Paulina | 69°F | 36°F | – | – |
| Pelton Dam | 73°F | 43°F | 1.05 | – |
| Portland Troutdale Airport | 69°F | 49°F | 2.91 | – |
| Rex (1 mi S) | 66°F | 47°F | 2.57 | 0.0 |
| Riley (10 mi WSW) | 65°F | 35°F | 1.27 | – |
| Riverside (7 mi SSW) | 73°F | 37°F | – | – |
| Rockville (5 mi N) | 71°F | 39°F | – | – |
| Rome (2 mi NW) | 73°F | 38°F | 1.45 | – |
| Rome St Airport | 72°F | 39°F | 1.24 | – |
| Santiam Junction | 58°F | 35°F | 4.01 | – |
| Sexton Summit | 61°F | 41°F | 2.19 | – |
| Sheaville (1 mi SE) | 67°F | 39°F | 1.92 | – |
| Silver Creek Falls | 63°F | 42°F | 4.40 | – |
| Squaw Butte-Northern Great Bas | 63°F | 38°F | 1.54 | – |
| Summer Lake (1 mi S) | 70°F | 37°F | 1.41 | 0.0 |
| The Poplars | 66°F | 34°F | 1.27 | 0.1 |
| Three Lynx | 64°F | 44°F | 4.41 | 0.0 |
| Toketee Falls | 70°F | 43°F | 3.27 | 0.0 |
| Westfall | 73°F | 43°F | 1.14 | – |
| Wickiup Dam | 63°F | 36°F | 1.32 | 0.3 |
| Winchester | 71°F | 45°F | 2.16 | – |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.