MilBases
Weather & Climate at Umatilla Chemical Depot Army Base
Umatilla, OR
Summary of the weather and climate in Umatilla, OR:
- The average high is 63.9°F and the average low is 43.6°F.
- The hottest month is July with a high of 88.2°F.
- The coldest month is December with a low of 29.4°F.
- Annual rainfall is 8.2 inches; the rainiest month is November (1.1 in).
- Annual snowfall is 1 inches; the snowiest month is February (0.6 in).
Source: NOAA climate normals.
Temperatures through the year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Bars span each month's average low to average high (20°F – 90°F scale).
Monthly averages
| Month | High (°F) | Low (°F) | Rain (in) | Snow (in) | |
|---|---|---|---|---|---|
| January | 41.1 | 30.1 | 1.08 | 0.1 | |
| February | 46.3 | 30.7 | 0.78 | 0.6 | |
| March | 56.2 | 36 | 0.78 | 0 | |
| April | 63.9 | 41.2 | 0.61 | 0 | |
| May | 72.1 | 48 | 0.77 | 0 | |
| June | 79.3 | 54.4 | 0.59 | 0 | |
| July | 88.2 | 60.8 | 0.18 | 0 | |
| August | 87.5 | 60.5 | 0.23 | 0 | |
| September | 78 | 52.9 | 0.36 | 0 | |
| October | 64.6 | 43.4 | 0.62 | 0 | |
| November | 50.2 | 35.8 | 1.1 | 0 | |
| December | 39.9 | 29.4 | 1.1 | 0.3 |