| 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 3b: -35F to -30F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| 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 55013 - Chisago City, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 2 | 9 | 21 | 34 | 47 | 56 | 60 | 59 | 50 | 38 | 24 | 9 | 34 |
| Avg Max Temp (°F) | 22 | 29 | 41 | 58 | 71 | 78 | 82 | 80 | 71 | 59 | 40 | 27 | 55 |
| Avg Precip (In.) | .97 | .78 | 1.61 | 2.4 | 3.41 | 4.58 | 4.39 | 4.56 | 3.34 | 2.47 | 1.95 | .94 | 31.4 |