Ramsey, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.6 °C (low) to 12.5 °C (high). Annual precipitation averages 832.6 Millimeters. Ramsey is located in USDA Plant Hardiness Zone 4b. 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 | -14.8 °C | -5.1 °C | 20.83 mm |
| February | -13 °C | -2.3 °C | 21.84 mm |
| March | -6.2 °C | 4.8 °C | 40.64 mm |
| April | 0.8 °C | 13 °C | 74.17 mm |
| May | 8 °C | 20.2 °C | 109.98 mm |
| June | 13.7 °C | 25.3 °C | 115.32 mm |
| July | 16.5 °C | 28.1 °C | 113.28 mm |
| August | 15 °C | 26.6 °C | 105.92 mm |
| September | 10.3 °C | 22.3 °C | 90.42 mm |
| October | 3.1 °C | 14.2 °C | 69.09 mm |
| November | -3.7 °C | 5.4 °C | 42.16 mm |
| December | -10.8 °C | -2.2 °C | 28.96 mm |
| Annual | 1.6 °C | 12.5 °C | 832.61 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |