Florence, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.9 °C (low) to 15.1 °C (high). Annual precipitation averages 1841 Millimeters. Florence is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.2 °C | 10.9 °C | 286.77 mm |
| February | 3.9 °C | 11.9 °C | 206.5 mm |
| March | 4.4 °C | 12.5 °C | 223.52 mm |
| April | 5.5 °C | 13.6 °C | 157.73 mm |
| May | 7.5 °C | 16.1 °C | 97.28 mm |
| June | 9.3 °C | 17.7 °C | 62.74 mm |
| July | 10.7 °C | 20.1 °C | 14.99 mm |
| August | 10.7 °C | 19.3 °C | 22.35 mm |
| September | 9.7 °C | 19.4 °C | 50.55 mm |
| October | 7.7 °C | 16.3 °C | 141.99 mm |
| November | 5.6 °C | 12.9 °C | 258.32 mm |
| December | 3.8 °C | 10.4 °C | 318.26 mm |
| Annual | 6.9 °C | 15.1 °C | 1841 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |