Amaranth, Manitoba climate data is summarized below. Average annual temperatures range from 27.9 °F (low) to 45.8 °F (high). Annual precipitation averages 18.1 Inches. Amaranth is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -29.3 °F | -23.8 °F | 0 in. |
| February | -29.2 °F | -23.2 °F | 0 in. |
| March | -24.3 °F | -18.6 °F | 25.4 in. |
| April | -19.3 °F | -13.6 °F | 584.2 in. |
| May | -15.2 °F | -9.1 °F | 2082.8 in. |
| June | -11.6 °F | -5.9 °F | 2844.8 in. |
| July | -10 °F | -4.1 °F | 1981.2 in. |
| August | -10.5 °F | -4.4 °F | 2006.6 in. |
| September | -13.1 °F | -7.1 °F | 1041.4 in. |
| October | -16.6 °F | -11.8 °F | 1092.2 in. |
| November | -21.4 °F | -17.4 °F | 0 in. |
| December | -27.8 °F | -23.2 °F | 0 in. |
| Annual | 27.9 °F | 45.8 °F | 18.07 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Normal |