Pablo, Montana has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.1 °C (low) to 13.6 °C (high). Annual precipitation averages 456.9 Millimeters. Pablo is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.7 °C | 0.9 °C | 35.81 mm |
| February | -6.4 °C | 2.9 °C | 28.19 mm |
| March | -3.3 °C | 8.2 °C | 30.48 mm |
| April | 0.1 °C | 13.1 °C | 45.72 mm |
| May | 4.1 °C | 18.4 °C | 53.59 mm |
| June | 7.7 °C | 22.2 °C | 72.39 mm |
| July | 10.4 °C | 28.4 °C | 25.4 mm |
| August | 9.7 °C | 28.3 °C | 21.34 mm |
| September | 5.8 °C | 21.9 °C | 34.04 mm |
| October | 0.8 °C | 13.2 °C | 41.4 mm |
| November | -3.2 °C | 5.2 °C | 34.8 mm |
| December | -6.3 °C | 0.7 °C | 33.78 mm |
| Annual | 1.1 °C | 13.6 °C | 456.94 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |