Holt, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 28 °F (low) to 48.6 °F (high). Annual precipitation averages 23.9 Inches. Holt is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °F | 13.9 °F | 0.65 in. |
| February | -1.8 °F | 18.6 °F | 0.58 in. |
| March | 12.3 °F | 32.5 °F | 0.78 in. |
| April | 28.2 °F | 49.8 °F | 1.25 in. |
| May | 41.5 °F | 64.1 °F | 3.22 in. |
| June | 53.2 °F | 73.9 °F | 4.04 in. |
| July | 55.9 °F | 78.1 °F | 3.72 in. |
| August | 53.2 °F | 77.3 °F | 2.98 in. |
| September | 44.0 °F | 68.2 °F | 2.87 in. |
| October | 32.5 °F | 52.3 °F | 2.04 in. |
| November | 18.0 °F | 34.3 °F | 0.97 in. |
| December | 4.0 °F | 20.2 °F | 0.83 in. |
| Annual | 28 °F | 48.6 °F | 23.93 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3b : -35°F to -30°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |