Ambler, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.2 °C (low) to 17.8 °C (high). Annual precipitation averages 1219.7 Millimeters. Ambler is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °C | 4.5 °C | 85.85 mm |
| February | -3.7 °C | 6.1 °C | 71.12 mm |
| March | 0.2 °C | 10.6 °C | 104.39 mm |
| April | 5.8 °C | 17.4 °C | 95 mm |
| May | 11.3 °C | 22.7 °C | 103.89 mm |
| June | 16.5 °C | 27.8 °C | 111.51 mm |
| July | 19.4 °C | 30.3 °C | 119.13 mm |
| August | 18.4 °C | 29.4 °C | 121.16 mm |
| September | 14.4 °C | 25.7 °C | 111.76 mm |
| October | 7.8 °C | 19.1 °C | 103.12 mm |
| November | 2.3 °C | 12.9 °C | 82.3 mm |
| December | -1.7 °C | 7.3 °C | 110.49 mm |
| Annual | 7.2 °C | 17.8 °C | 1219.72 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |