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	Area Conditions for St Marys, ON

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As reported at HPSTS St Mary's, ON at 12:00 AM

	5-day Forecast for St Marys, ON

Date	Fri 19 Dec	Sat 20 Dec	Sun 21 Dec	Mon 22 Dec	Tue 23 Dec
Weather Condition
Weather	Rain/Snow Mix	Snow Showers	Snow	Snow	Snow
Temperature (°C) Low/High	-7/6	-8/1	-8/-2	-10/-3	-3/2
Feels Like (°C) Low/High	-16/1	-15/-6	-17/-8	-16/-9	-9/-3
Dew Point (°C)	-2	-7	-8	-9	-4
Humidity (%)	82	73	77	75	86
Wind Speed (kph)	35	27	27	14	18
Precipitation Chance (%)	80	65	63	52	79
Precipitation Amount (cm) S=Snow, L=Liquid	S: 2.5-5 L: 1.19	S: <.6 L: 0.08	S: 2.5-5 L: 0.38	S: 2.5-5 L: 0.25	S: 2.5-5 L: 0.30
Evapo- transpiration (cm/day)	0.1	0.08	0.08	0.05	0.05

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Bryce Anderson – DTN Meteorologist

Posted at 12:06PM Thu Dec 18, 2025 CST

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