Van Buren, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.7 °C (low) to 9.4 °C (high). Annual precipitation averages 1085.1 Millimeters. Van Buren is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -18.6 °C | -7.1 °C | 80.01 mm |
| February | -17.8 °C | -5.2 °C | 60.96 mm |
| March | -11.2 °C | 0.4 °C | 70.1 mm |
| April | -2.6 °C | 7.7 °C | 81.03 mm |
| May | 4.3 °C | 16.3 °C | 91.19 mm |
| June | 9.6 °C | 21.5 °C | 104.65 mm |
| July | 12.9 °C | 24.3 °C | 118.36 mm |
| August | 11.8 °C | 23.7 °C | 93.47 mm |
| September | 7.2 °C | 18.9 °C | 95.76 mm |
| October | 1.3 °C | 11.2 °C | 110.49 mm |
| November | -4.3 °C | 3.8 °C | 87.88 mm |
| December | -12.4 °C | -3 °C | 91.19 mm |
| Annual | -1.7 °C | 9.4 °C | 1085.09 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |