Northrop, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.1 °F (low) to 55.2 °F (high). Annual precipitation averages 32 Inches. 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 | 6.7 °F | 23.6 °F | 0.86 in. |
| February | 10.8 °F | 27.9 °F | 0.9 in. |
| March | 23.1 °F | 40.4 °F | 1.77 in. |
| April | 35.2 °F | 56.0 °F | 3.14 in. |
| May | 48.1 °F | 69.0 °F | 4.27 in. |
| June | 59.1 °F | 78.9 °F | 4.83 in. |
| July | 62.5 °F | 82.2 °F | 4.05 in. |
| August | 59.8 °F | 79.6 °F | 3.7 in. |
| September | 51.2 °F | 74.0 °F | 3.3 in. |
| October | 38.3 °F | 59.6 °F | 2.56 in. |
| November | 25.1 °F | 42.9 °F | 1.47 in. |
| December | 13.3 °F | 28.8 °F | 1.16 in. |
| Annual | 36.1 °F | 55.2 °F | 32.01 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 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |