Latimer, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36 °F (low) to 56.2 °F (high). Annual precipitation averages 36.6 Inches. Latimer is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.6 °F | 24.8 °F | 0.9 in. |
| February | 11.7 °F | 29.6 °F | 1.08 in. |
| March | 23.7 °F | 42.2 °F | 2.05 in. |
| April | 35.0 °F | 57.3 °F | 3.9 in. |
| May | 47.8 °F | 69.2 °F | 5.12 in. |
| June | 58.5 °F | 79.2 °F | 5.83 in. |
| July | 61.5 °F | 82.2 °F | 4.5 in. |
| August | 58.6 °F | 80.0 °F | 4.23 in. |
| September | 49.7 °F | 74.2 °F | 3.28 in. |
| October | 37.6 °F | 60.7 °F | 2.53 in. |
| November | 25.7 °F | 44.1 °F | 1.76 in. |
| December | 14.3 °F | 30.5 °F | 1.4 in. |
| Annual | 36 °F | 56.2 °F | 36.58 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |