Raymond, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.4 °F (low) to 57.5 °F (high). Annual precipitation averages 38.3 Inches. Raymond 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 | 9.4 °F | 26.5 °F | 1.12 in. |
| February | 13.4 °F | 30.8 °F | 1.21 in. |
| March | 25.1 °F | 44.1 °F | 2.08 in. |
| April | 36.5 °F | 58.8 °F | 3.98 in. |
| May | 48.9 °F | 70.5 °F | 4.85 in. |
| June | 59.6 °F | 80.1 °F | 5.76 in. |
| July | 62.7 °F | 83.2 °F | 4.78 in. |
| August | 59.9 °F | 81.2 °F | 4.28 in. |
| September | 51.2 °F | 75.3 °F | 3.7 in. |
| October | 39.0 °F | 61.9 °F | 2.92 in. |
| November | 26.9 °F | 45.6 °F | 2.02 in. |
| December | 16.1 °F | 32.3 °F | 1.55 in. |
| Annual | 37.4 °F | 57.5 °F | 38.25 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |