Warsaw, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.1 °F (low) to 54.7 °F (high). Annual precipitation averages 33.9 Inches. Warsaw is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.6 °F | 23.0 °F | 0.84 in. |
| February | 9.2 °F | 27.7 °F | 0.99 in. |
| March | 21.7 °F | 40.2 °F | 1.76 in. |
| April | 34.3 °F | 55.6 °F | 2.97 in. |
| May | 46.9 °F | 68.1 °F | 4.34 in. |
| June | 57.7 °F | 78.1 °F | 5.1 in. |
| July | 61.2 °F | 81.6 °F | 4.51 in. |
| August | 58.8 °F | 79.5 °F | 4.66 in. |
| September | 50.3 °F | 72.8 °F | 3.47 in. |
| October | 37.2 °F | 58.7 °F | 2.47 in. |
| November | 25.0 °F | 42.1 °F | 1.59 in. |
| December | 12.7 °F | 28.6 °F | 1.2 in. |
| Annual | 35.1 °F | 54.7 °F | 33.9 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |