| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Mar. 21 - Mar. 31 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 73a - Northern Holocene Meander Belts |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 72364 - Marion, AR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 33 | 42 | 50 | 60 | 68 | 72 | 69 | 62 | 51 | 41 | 33 | 51 |
| Avg Max Temp (°F) | 47 | 53 | 62 | 71 | 80 | 88 | 91 | 90 | 84 | 74 | 61 | 51 | 71 |
| Avg Precip (In.) | 4.04 | 4.11 | 5.41 | 5.45 | 5.13 | 4.36 | 3.47 | 2.89 | 3.25 | 3.41 | 5.42 | 5.48 | 52.41 |