Northrop, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.3 °C (low) to 12.9 °C (high). Annual precipitation averages 813.1 Millimeters. Northrop is located in USDA Plant Hardiness Zone 5a. 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 | -14.1 °C | -4.7 °C | 21.84 mm |
| February | -11.8 °C | -2.3 °C | 22.86 mm |
| March | -4.9 °C | 4.7 °C | 44.96 mm |
| April | 1.8 °C | 13.3 °C | 79.76 mm |
| May | 8.9 °C | 20.6 °C | 108.46 mm |
| June | 15.1 °C | 26.1 °C | 122.68 mm |
| July | 16.9 °C | 27.9 °C | 102.87 mm |
| August | 15.4 °C | 26.4 °C | 93.98 mm |
| September | 10.7 °C | 23.3 °C | 83.82 mm |
| October | 3.5 °C | 15.3 °C | 65.02 mm |
| November | -3.8 °C | 6.1 °C | 37.34 mm |
| December | -10.4 °C | -1.8 °C | 29.46 mm |
| Annual | 2.3 °C | 12.9 °C | 813.05 mm |
| 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |