Canada · 1991–2020 normal
St. Marys in
December.
Typical December weather in St. Marys: 0.9°C by day, -4.8°C at night, 99 mm of rain over 15.7 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high0.9°C
Typical low-4.8°C
Rain99 mm
Wet days15.7
Comfort score 5 this month (August leads the year at 84). Daylight is calculated as 8 h 59 from latitude 43.25°.
Event window
Frost-level nights in December
The measured night-time normal is -4.8°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 6157062
- NOAA station
- CA006148105 · STRATFORD WWTP
- Station distance
- 16.9 km from the place centre
- Coverage
- Good coverage · 23 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.