Climate at a glance · St. Marys
Annual mean7°day and night
Precipitation1071 mma year
Warmest monthJulyavg high 26°
Coldest monthJanuaryavg low -10°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
1071 mm a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | -3° | -1° | 4° | 11° | 18° | 24° | 26° | 25° | 21° | 13° | 6° | 0° |
| Avg low | -10° | -9° | -5° | 2° | 7° | 12° | 15° | 14° | 10° | 5° | 0° | -6° |
| Precip, mm | 97 | 71 | 66 | 80 | 92 | 77 | 102 | 84 | 102 | 90 | 105 | 105 |
Climate normals 1981–2010 · Stratford Wwtp station (17 km away) · Environment and Climate Change Canada
43.2501°N, 81.1330°W · Elevation 325 m