Maupin, Oregon has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 40.2 °F (low) to 66.1 °F (high). Annual precipitation averages 12.2 Inches. Maupin is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 28.4 °F | 43.8 °F | 1.8 in. |
| February | 29.5 °F | 48.9 °F | 1.48 in. |
| March | 32.7 °F | 56.6 °F | 1.08 in. |
| April | 37.2 °F | 64.5 °F | 0.95 in. |
| May | 44.5 °F | 73.4 °F | 0.95 in. |
| June | 50.2 °F | 80.5 °F | 0.55 in. |
| July | 56.4 °F | 90.7 °F | 0.2 in. |
| August | 55.2 °F | 90.6 °F | 0.23 in. |
| September | 48.5 °F | 82.2 °F | 0.33 in. |
| October | 39.2 °F | 67.4 °F | 0.92 in. |
| November | 32.2 °F | 51.6 °F | 1.62 in. |
| December | 27.8 °F | 42.6 °F | 2.09 in. |
| Annual | 40.2 °F | 66.1 °F | 12.2 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |