Pine City, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.4 °C (low) to 11.8 °C (high). Annual precipitation averages 788.2 Millimeters. Pine City is located in USDA Plant Hardiness Zone 4a. 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 | -17.1 °C | -5.8 °C | 18.54 mm |
| February | -15.2 °C | -2.8 °C | 21.08 mm |
| March | -8.1 °C | 4.2 °C | 38.35 mm |
| April | -0.9 °C | 12.1 °C | 69.85 mm |
| May | 6.1 °C | 19.5 °C | 96.01 mm |
| June | 11.8 °C | 24.7 °C | 114.55 mm |
| July | 14.3 °C | 27.1 °C | 108.2 mm |
| August | 12.8 °C | 26.1 °C | 97.79 mm |
| September | 8.1 °C | 21.5 °C | 81.79 mm |
| October | 1.5 °C | 13.6 °C | 74.17 mm |
| November | -5.3 °C | 4.5 °C | 39.88 mm |
| December | -12.6 °C | -2.9 °C | 27.94 mm |
| Annual | -0.4 °C | 11.8 °C | 788.15 mm |
| 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 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |