Van Buren, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 29 °F (low) to 48.9 °F (high). Annual precipitation averages 42.7 Inches. 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 | -1.5 °F | 19.3 °F | 3.15 in. |
| February | -0.0 °F | 22.7 °F | 2.4 in. |
| March | 11.9 °F | 32.7 °F | 2.76 in. |
| April | 27.3 °F | 45.8 °F | 3.19 in. |
| May | 39.7 °F | 61.4 °F | 3.59 in. |
| June | 49.2 °F | 70.7 °F | 4.12 in. |
| July | 55.2 °F | 75.7 °F | 4.66 in. |
| August | 53.2 °F | 74.6 °F | 3.68 in. |
| September | 45.0 °F | 66.0 °F | 3.77 in. |
| October | 34.3 °F | 52.1 °F | 4.35 in. |
| November | 24.3 °F | 38.8 °F | 3.46 in. |
| December | 9.6 °F | 26.6 °F | 3.59 in. |
| Annual | 29 °F | 48.9 °F | 42.72 in. |
| 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 : -35°F to -30°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |