Amsterdam, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.7 °F (low) to 65.9 °F (high). Annual precipitation averages 42.5 Inches. Amsterdam is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.5 °F | 40.1 °F | 1.47 in. |
| February | 24.1 °F | 44.9 °F | 1.82 in. |
| March | 33.5 °F | 55.6 °F | 2.75 in. |
| April | 43.5 °F | 66.0 °F | 4.36 in. |
| May | 54.5 °F | 75.0 °F | 6.0 in. |
| June | 64.2 °F | 83.9 °F | 5.5 in. |
| July | 68.6 °F | 88.9 °F | 4.39 in. |
| August | 66.3 °F | 87.8 °F | 3.84 in. |
| September | 57.5 °F | 80.4 °F | 4.44 in. |
| October | 45.4 °F | 68.7 °F | 3.43 in. |
| November | 34.1 °F | 55.3 °F | 2.53 in. |
| December | 24.7 °F | 43.7 °F | 1.92 in. |
| Annual | 44.7 °F | 65.9 °F | 42.45 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |