Spanish Lake, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 47.8 °F (low) to 66.2 °F (high). Annual precipitation averages 43 Inches. Spanish Lake is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.1 °F | 39.7 °F | 2.61 in. |
| February | 27.1 °F | 45.5 °F | 2.32 in. |
| March | 36.2 °F | 55.6 °F | 3.35 in. |
| April | 47.0 °F | 67.2 °F | 4.7 in. |
| May | 57.8 °F | 76.3 °F | 5.23 in. |
| June | 66.9 °F | 85.1 °F | 4.32 in. |
| July | 70.4 °F | 88.2 °F | 3.98 in. |
| August | 68.7 °F | 87.2 °F | 3.65 in. |
| September | 60.3 °F | 80.5 °F | 3.33 in. |
| October | 48.9 °F | 69.2 °F | 3.3 in. |
| November | 37.3 °F | 55.1 °F | 3.57 in. |
| December | 28.8 °F | 44.4 °F | 2.67 in. |
| Annual | 47.8 °F | 66.2 °F | 43.03 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |