Trosky, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 34.3 °F (low) to 54.4 °F (high). Annual precipitation averages 28.6 Inches. Trosky 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.6 °F | 23.2 °F | 0.62 in. |
| February | 9.3 °F | 27.9 °F | 0.79 in. |
| March | 20.9 °F | 40.0 °F | 1.42 in. |
| April | 33.0 °F | 54.9 °F | 2.89 in. |
| May | 46.0 °F | 67.3 °F | 3.91 in. |
| June | 57.5 °F | 77.7 °F | 4.37 in. |
| July | 61.0 °F | 82.0 °F | 3.59 in. |
| August | 58.1 °F | 79.3 °F | 3.3 in. |
| September | 49.5 °F | 72.7 °F | 3.32 in. |
| October | 36.2 °F | 58.6 °F | 2.27 in. |
| November | 22.9 °F | 41.9 °F | 1.17 in. |
| December | 11.4 °F | 27.8 °F | 0.93 in. |
| Annual | 34.3 °F | 54.4 °F | 28.58 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |