Fisher, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30 °F (low) to 49.8 °F (high). Annual precipitation averages 23 Inches. Fisher is located in USDA Plant Hardiness Zone 4a. 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 | -2.8 °F | 14.9 °F | 0.64 in. |
| February | 0.6 °F | 19.4 °F | 0.6 in. |
| March | 15.2 °F | 32.8 °F | 0.87 in. |
| April | 30.4 °F | 50.8 °F | 1.21 in. |
| May | 43.0 °F | 65.4 °F | 2.86 in. |
| June | 54.8 °F | 75.1 °F | 4.01 in. |
| July | 58.3 °F | 79.6 °F | 3.43 in. |
| August | 55.2 °F | 79.2 °F | 2.93 in. |
| September | 46.3 °F | 69.5 °F | 2.75 in. |
| October | 33.9 °F | 53.6 °F | 2.05 in. |
| November | 19.3 °F | 36.0 °F | 0.85 in. |
| December | 5.6 °F | 20.7 °F | 0.81 in. |
| Annual | 30 °F | 49.8 °F | 23.01 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |