Area Conditions for St Marys, ON
 
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Temperature: 19 oC
Feels Like: 19 oC
Humidity: 93%
Barometer: 29.8
Dew Point: 18 oC
Wind Dir.: SSW
Wind Speed: 9 km/h
Sunrise: 5:44
Sunset: 9:07
Observation: Partly Cloudy
As reported at HPSTS St Mary's, ON at 4:00 AM

5-day Forecast for St Marys, ON
Date Wed
18 Jun
Thu
19 Jun
Fri
20 Jun
Sat
21 Jun
Sun
22 Jun
Weather Condition Thunder Storms Thunder Storms Thunder Storms Thunder Storms Partly Cloudy
Weather Thunder Storms Thunder Storms Thunder Storms Thunder Storms Partly Cloudy
Temperature (°C)
Low/High
18/26 15/21 13/27 17/27 22/32
Feels Like (°C)
Low/High
18/27 15/21 13/27 17/28 22/36
Dew Point (°C) 19 16 14 17 21
Humidity (%) 76 73 62 69 64
Wind Speed (kph) 10 23 16 26 19
Precipitation
Chance
(%)
70 79 40 36 -
Precipitation
Amount
(cm)
S=Snow, L=Liquid
Rain
2.08
Rain
0.66
Rain
0.13
Rain
0.81
None
Evapo-
transpiration

(cm/day)
0.36 0.38 0.51 0.53 0.69
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Bryce Anderson – DTN Meteorologist
Severe Storms in Kansas Tuesday Move Into Midwest Wednesday
Posted at 12:18PM Tue Jun 17, 2025 CDT
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