WELLBURN AGROMART LIMITED

	Area Conditions for St Marys, ON

Change Zip Code:

As reported at HPSTS St Mary's, ON at 3:00 AM

	5-day Forecast for St Marys, ON

Date	Thu 19 Mar	Fri 20 Mar	Sat 21 Mar	Sun 22 Mar	Mon 23 Mar
Weather Condition
Weather	Cloudy	Rain	Mostly Cloudy	Rain	Snow
Temperature (°C) Low/High	-2/4	-2/8	0/8	1/7	-6/0
Feels Like (°C) Low/High	-6/2	-4/4	-3/6	-5/4	-11/-6
Dew Point (°C)	-3	1	1	1	-6
Humidity (%)	74	87	75	83	63
Wind Speed (kph)	11	18	11	18	21
Precipitation Chance (%)	-	80	-	80	67
Precipitation Amount (cm) S=Snow, L=Liquid	None	Rain 0.66	None	Rain 1.07	S: 2.5-5 L: 0.23
Evapo- transpiration (cm/day)	0.13	0.1	0.15	0.1	0.13

DTN Weather

Local Weather
Radar
Current Temperatures
North American Satellite
US Satellite
DTN Weather Commentary
Current Surface Analysis
Wind Conditions
Today's Forecast Highs
Tonight's Forecast Lows
24 Hr Surface Forecast
Jet Stream Forecast
24 Hr Precipitation Totals
24 Hr StormPath Accum
48 Hr StormPath Accum
5 Day StormPath Accum
3-5 Day Min Temps
6-10 Day Precip Forecast
Growing Degree Days
Soil Temperatures
US Drought Monitor
US Palmer Drought Index
US Crop Moisture Index

DTN Weather Summary

Bryce Anderson – DTN Meteorologist

Posted at 12:04PM Wed Mar 18, 2026 CDT

Click here to get your local weather emailed to you each day.