Batavia, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.9 °F (low) to 55.3 °F (high). Annual precipitation averages 16.5 Inches. Batavia is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.4 °F | 31.7 °F | 1.32 in. |
| February | 17.1 °F | 36.0 °F | 1.04 in. |
| March | 23.0 °F | 44.7 °F | 1.11 in. |
| April | 29.5 °F | 54.6 °F | 1.33 in. |
| May | 37.2 °F | 64.8 °F | 1.7 in. |
| June | 43.5 °F | 71.1 °F | 2.57 in. |
| July | 47.6 °F | 82.2 °F | 1.09 in. |
| August | 45.8 °F | 81.9 °F | 0.89 in. |
| September | 38.8 °F | 70.7 °F | 1.19 in. |
| October | 30.1 °F | 54.7 °F | 1.41 in. |
| November | 23.8 °F | 39.8 °F | 1.46 in. |
| December | 17.7 °F | 31.1 °F | 1.37 in. |
| Annual | 30.9 °F | 55.3 °F | 16.48 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |