Jeffers, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 34.9 °F (low) to 54.5 °F (high). Annual precipitation averages 30 Inches. Jeffers is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.2 °F | 23.1 °F | 0.68 in. |
| February | 10.0 °F | 27.5 °F | 0.78 in. |
| March | 21.7 °F | 39.5 °F | 1.62 in. |
| April | 33.7 °F | 55.3 °F | 2.97 in. |
| May | 46.5 °F | 67.8 °F | 4.15 in. |
| June | 57.8 °F | 78.1 °F | 4.72 in. |
| July | 61.4 °F | 81.7 °F | 3.68 in. |
| August | 58.5 °F | 79.3 °F | 3.56 in. |
| September | 50.0 °F | 73.2 °F | 3.18 in. |
| October | 36.8 °F | 58.8 °F | 2.36 in. |
| November | 23.9 °F | 41.8 °F | 1.3 in. |
| December | 12.3 °F | 28.1 °F | 0.95 in. |
| Annual | 34.9 °F | 54.5 °F | 29.95 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |