Bloomington, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.3 °F (low) to 55.1 °F (high). Annual precipitation averages 33.8 Inches. Bloomington is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.8 °F | 23.4 °F | 0.99 in. |
| February | 11.3 °F | 28.2 °F | 0.94 in. |
| March | 23.2 °F | 40.8 °F | 1.75 in. |
| April | 36.4 °F | 55.8 °F | 3.11 in. |
| May | 49.0 °F | 68.6 °F | 4.25 in. |
| June | 59.5 °F | 78.4 °F | 5.02 in. |
| July | 64.2 °F | 82.8 °F | 4.25 in. |
| August | 61.6 °F | 80.4 °F | 4.56 in. |
| September | 53.1 °F | 72.8 °F | 3.26 in. |
| October | 39.9 °F | 58.5 °F | 2.65 in. |
| November | 27.0 °F | 42.2 °F | 1.69 in. |
| December | 14.6 °F | 28.7 °F | 1.29 in. |
| Annual | 37.3 °F | 55.1 °F | 33.76 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°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 |