Craig, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.5 °C (low) to 14.3 °C (high). Annual precipitation averages 743.2 Millimeters. Craig 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 | -13.3 °C | -2.9 °C | 16.76 mm |
| February | -10.8 °C | -0.1 °C | 20.07 mm |
| March | -4.4 °C | 7 °C | 41.66 mm |
| April | 1.7 °C | 14.9 °C | 78.99 mm |
| May | 8.9 °C | 21.7 °C | 102.36 mm |
| June | 15 °C | 27.2 °C | 114.05 mm |
| July | 16.8 °C | 28.8 °C | 83.82 mm |
| August | 15.4 °C | 27.6 °C | 86.87 mm |
| September | 10.5 °C | 24.2 °C | 78.74 mm |
| October | 3.5 °C | 16.7 °C | 62.23 mm |
| November | -3.8 °C | 7.3 °C | 33.53 mm |
| December | -10.1 °C | -0.3 °C | 24.13 mm |
| Annual | 2.5 °C | 14.3 °C | 743.21 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |