Sanborn, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.5 °C (low) to 12.8 °C (high). Annual precipitation averages 767.1 Millimeters. Sanborn is located in USDA Plant Hardiness Zone 5a. 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 | -14.9 °C | -5 °C | 17.78 mm |
| February | -12.6 °C | -2.4 °C | 20.83 mm |
| March | -5.8 °C | 4.3 °C | 42.42 mm |
| April | 1.1 °C | 13.2 °C | 77.22 mm |
| May | 8.2 °C | 20.6 °C | 104.65 mm |
| June | 14.3 °C | 26 °C | 121.67 mm |
| July | 16.2 °C | 27.9 °C | 95.25 mm |
| August | 14.7 °C | 26.7 °C | 91.69 mm |
| September | 9.7 °C | 23.1 °C | 78.74 mm |
| October | 2.7 °C | 15.4 °C | 58.17 mm |
| November | -4.6 °C | 5.8 °C | 33.02 mm |
| December | -11.2 °C | -2.1 °C | 25.65 mm |
| Annual | 1.5 °C | 12.8 °C | 767.09 mm |
| 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |