Estevan, Saskatchewan climate data is summarized below. Average annual temperatures range from 29 °F (low) to 49.9 °F (high). Annual precipitation averages 17.1 Inches. Estevan is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -27.4 °F | -21.8 °F | 0 in. |
| February | -27.3 °F | -21.6 °F | 0 in. |
| March | -22.8 °F | -16.7 °F | 304.8 in. |
| April | -18.7 °F | -11.9 °F | 533.4 in. |
| May | -15.1 °F | -7.8 °F | 1574.8 in. |
| June | -11.8 °F | -5.3 °F | 2895.6 in. |
| July | -10.3 °F | -3.3 °F | 2133.6 in. |
| August | -11.1 °F | -3.3 °F | 1828.8 in. |
| September | -14 °F | -6 °F | 1016 in. |
| October | -17.5 °F | -11 °F | 381 in. |
| November | -22 °F | -16.4 °F | 304.8 in. |
| December | -26.7 °F | -21.8 °F | 76.2 in. |
| Annual | 29 °F | 49.9 °F | 17.12 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |