Prior Lake, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36 °F (low) to 54.9 °F (high). Annual precipitation averages 33.1 Inches. Prior Lake is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.3 °F | 23.1 °F | 0.89 in. |
| February | 9.6 °F | 27.7 °F | 0.92 in. |
| March | 22.0 °F | 40.3 °F | 1.73 in. |
| April | 35.5 °F | 55.7 °F | 2.95 in. |
| May | 48.1 °F | 68.6 °F | 4.35 in. |
| June | 58.5 °F | 78.1 °F | 5.02 in. |
| July | 62.5 °F | 82.3 °F | 4.12 in. |
| August | 59.9 °F | 80.2 °F | 4.57 in. |
| September | 51.7 °F | 73.2 °F | 3.18 in. |
| October | 38.6 °F | 58.7 °F | 2.56 in. |
| November | 25.7 °F | 42.1 °F | 1.65 in. |
| December | 13.0 °F | 28.3 °F | 1.19 in. |
| Annual | 36 °F | 54.9 °F | 33.13 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |