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O'Brien, OR Climate
1991 to 2020 normals at Cave Junction 1 Wnw, 7.1 mi from the center of O'Brien, elevation 1377 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 49° | 33° | 11.36 in | 2.1 in | |
| February | 55° | 33° | 8.47 in | 1.2 in | |
| March | 60° | 34° | 8.58 in | 1.5 in | |
| April | 67° | 37° | 4.11 in | 0.2 in | |
| May | 76° | 42° | 2.09 in | 0.0 in | |
| June | 84° | 47° | 0.82 in | 0.0 in | |
| July | 94° | 52° | 0.25 in | 0.0 in | |
| August | 94° | 49° | 0.28 in | 0.0 in | |
| September | 87° | 44° | 0.83 in | 0.0 in | |
| October | 72° | 39° | 3.49 in | 0.0 in | |
| November | 55° | 36° | 7.96 in | 0.2 in | |
| December | 47° | 33° | 12.95 in | 1.9 in | |
| Year | 70° | 61.19 in | 7.1 in |
Frequently asked questions
- What is the hottest month in O'Brien, OR?
- July is the warmest month, with a normal high of 94°F at Cave Junction 1 Wnw.
- What is the coldest month in O'Brien, OR?
- January is the coldest month, with a normal low of 33°F.
- What is the wettest month in O'Brien, OR?
- December has the most precipitation on average, about 12.95 inches.