| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -1.7° | -12.6° | 11.5mm | 6.4 | 17 |
| February | -1.6° | -13.1° | 12.6mm | 6.9 | 16 |
| March | 5.7° | -6.7° | 14.9mm | 6.8 | 28 |
| April | 13.3° | -0.6° | 22mm | 6.6 | 61 |
| May | 19.3° | 5° | 48.8mm | 9.3 | 79 |
| June | 23.3° | 9.6° | 69.9mm | 10.6 | 79 |
| July | 28.6° | 12.8° | 34mm | 6.5 | 81 |
| August | 27.5° | 11.7° | 34.2mm | 6.5 | 85 |
| September | 21.7° | 6.5° | 27.3mm | 5.4 | 89 |
| October | 13.4° | -0.3° | 16.8mm | 5.3 | 65 |
| November | 4.9° | -6.9° | 15mm | 6.1 | 26 |
| December | -2° | -12.9° | 12.8mm | 6.8 | 16 |
January in Medicine Hat averages a daily high of -1.7°C with nights around -12.6°C. Expect roughly 6.4 wet days totalling 11.5mm. A hard month to visit for comfort alone.
February in Medicine Hat averages a daily high of -1.6°C with nights around -13.1°C. Expect roughly 6.9 wet days totalling 12.6mm. A hard month to visit for comfort alone.
March in Medicine Hat averages a daily high of 5.7°C with nights around -6.7°C. Expect roughly 6.8 wet days totalling 14.9mm. A hard month to visit for comfort alone.
April in Medicine Hat averages a daily high of 13.3°C with nights around -0.6°C. Expect roughly 6.6 wet days totalling 22mm. Generally workable, with some weather to plan around.
May in Medicine Hat averages a daily high of 19.3°C with nights around 5°C. Expect roughly 9.3 wet days totalling 48.8mm. Comfortable conditions for being outdoors all day.
June in Medicine Hat averages a daily high of 23.3°C with nights around 9.6°C. Expect roughly 10.6 wet days totalling 69.9mm. Comfortable conditions for being outdoors all day.
July in Medicine Hat averages a daily high of 28.6°C with nights around 12.8°C. Expect roughly 6.5 wet days totalling 34mm. Comfortable conditions for being outdoors all day.
August in Medicine Hat averages a daily high of 27.5°C with nights around 11.7°C. Expect roughly 6.5 wet days totalling 34.2mm. Comfortable conditions for being outdoors all day.
September in Medicine Hat averages a daily high of 21.7°C with nights around 6.5°C. Expect roughly 5.4 wet days totalling 27.3mm. Comfortable conditions for being outdoors all day.
October in Medicine Hat averages a daily high of 13.4°C with nights around -0.3°C. Expect roughly 5.3 wet days totalling 16.8mm. Generally workable, with some weather to plan around.
November in Medicine Hat averages a daily high of 4.9°C with nights around -6.9°C. Expect roughly 6.1 wet days totalling 15mm. A hard month to visit for comfort alone.
December in Medicine Hat averages a daily high of -2°C with nights around -12.9°C. Expect roughly 6.8 wet days totalling 12.8mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Medicine Hat peaks at 89.
Based on 30 years of records, July–September scores highest for comfort in Medicine Hat, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.6°C.
June is the wettest, averaging 69.9mm of rain across roughly 10.6 wet days.
December is the coolest month, with average daily highs around -2°C.