Baxter, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.7 °F (low) to 58.8 °F (high). Annual precipitation averages 36.6 Inches. Baxter is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.1 °F | 28.5 °F | 0.97 in. |
| February | 15.3 °F | 33.1 °F | 1.19 in. |
| March | 26.3 °F | 46.2 °F | 2.05 in. |
| April | 37.5 °F | 60.2 °F | 3.79 in. |
| May | 50.0 °F | 71.0 °F | 5.0 in. |
| June | 60.1 °F | 80.5 °F | 5.37 in. |
| July | 64.0 °F | 83.9 °F | 4.32 in. |
| August | 61.5 °F | 81.9 °F | 4.35 in. |
| September | 52.5 °F | 76.0 °F | 3.53 in. |
| October | 40.2 °F | 62.6 °F | 2.64 in. |
| November | 27.9 °F | 47.2 °F | 1.94 in. |
| December | 17.4 °F | 34.0 °F | 1.4 in. |
| Annual | 38.7 °F | 58.8 °F | 36.55 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |