| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 47f - Rolling Loess Prairies |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 50327 - Pleasant Hill, IA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 16 | 27 | 38 | 51 | 60 | 65 | 62 | 53 | 41 | 28 | 16 | 39 |
| Avg Max Temp (°F) | 28 | 35 | 47 | 60 | 72 | 81 | 85 | 83 | 76 | 64 | 46 | 33 | 59 |
| Avg Precip (In.) | .88 | 1.06 | 2.17 | 3.42 | 4.36 | 4.79 | 4.23 | 4.19 | 3.27 | 2.6 | 2.08 | 1.18 | 34.23 |