| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 51k - McGrath Till Plain and Drumlins |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 56368 - Richmond, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 8 | 20 | 33 | 47 | 56 | 60 | 58 | 49 | 37 | 22 | 7 | 33 |
| Avg Max Temp (°F) | 20 | 27 | 39 | 56 | 70 | 78 | 83 | 80 | 71 | 58 | 38 | 24 | 54 |
| Avg Precip (In.) | .88 | .68 | 1.69 | 2.18 | 3.35 | 4.62 | 3.71 | 3.84 | 3.02 | 2.35 | 1.62 | .72 | 28.69 |