| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| Average First Frost Date: | September 11 - 20 | |
| Average Last Frost Date: | June 1 - 10 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 18f - Laramie Basin | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 82070 - Laramie, WY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 12 | 18 | 24 | 33 | 42 | 47 | 46 | 37 | 28 | 17 | 10 | 27 |
| Avg Max Temp (°F) | 32 | 35 | 42 | 50 | 60 | 72 | 79 | 78 | 68 | 57 | 41 | 33 | 54 |
| Avg Precip (In.) | .41 | .5 | .82 | 1.09 | 1.69 | 1.29 | 1.56 | 1.21 | 1.01 | .83 | .67 | .49 | 11.58 |