Rock Creek, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31.4 °F (low) to 53.2 °F (high). Annual precipitation averages 31 Inches. Rock Creek is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °F | 21.6 °F | 0.71 in. |
| February | 4.8 °F | 27.0 °F | 0.82 in. |
| March | 17.6 °F | 39.6 °F | 1.54 in. |
| April | 30.4 °F | 53.7 °F | 2.79 in. |
| May | 43.0 °F | 67.0 °F | 3.81 in. |
| June | 53.4 °F | 76.4 °F | 4.51 in. |
| July | 57.7 °F | 80.7 °F | 4.15 in. |
| August | 55.1 °F | 78.9 °F | 3.9 in. |
| September | 46.7 °F | 70.8 °F | 3.21 in. |
| October | 34.8 °F | 56.4 °F | 2.92 in. |
| November | 22.5 °F | 40.1 °F | 1.59 in. |
| December | 9.5 °F | 26.7 °F | 1.06 in. |
| Annual | 31.4 °F | 53.2 °F | 31.01 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |