Climate at a glance · St. Marys
Annual mean45°day and night
Precipitation42.17 ina year
Warmest monthJulyavg high 78°
Coldest monthJanuaryavg low 15°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
42.17 in a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 27° | 30° | 38° | 52° | 65° | 74° | 78° | 76° | 69° | 56° | 43° | 32° |
| Avg low | 15° | 16° | 23° | 35° | 45° | 54° | 58° | 56° | 50° | 40° | 32° | 22° |
| Precip, in | 3.82 | 2.80 | 2.60 | 3.15 | 3.62 | 3.03 | 4.02 | 3.31 | 4.02 | 3.54 | 4.13 | 4.13 |
Climate normals 1981–2010 · Stratford Wwtp station (17 km away) · Environment and Climate Change Canada
43.2501°N, 81.1330°W · Elevation 1,066 ft