Watson, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.9 °F (low) to 54.7 °F (high). Annual precipitation averages 27.7 Inches. Watson is located in USDA Plant Hardiness Zone 4b. 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 | 3.8 °F | 22.2 °F | 0.78 in. |
| February | 7.4 °F | 26.9 °F | 0.81 in. |
| March | 20.3 °F | 39.1 °F | 1.47 in. |
| April | 33.2 °F | 55.2 °F | 2.5 in. |
| May | 46.3 °F | 68.9 °F | 3.34 in. |
| June | 57.4 °F | 78.7 °F | 4.13 in. |
| July | 60.9 °F | 82.5 °F | 3.79 in. |
| August | 58.0 °F | 80.3 °F | 3.71 in. |
| September | 49.4 °F | 73.7 °F | 2.75 in. |
| October | 36.4 °F | 59.4 °F | 2.35 in. |
| November | 23.3 °F | 42.0 °F | 1.23 in. |
| December | 10.9 °F | 27.6 °F | 0.86 in. |
| Annual | 33.9 °F | 54.7 °F | 27.72 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |