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Area Conditions for
St Marys, ON
Change Zip Code:
Temperature:
18
o
C
Feels Like:
18
o
C
Humidity:
87%
Barometer:
29.65
Dew Point:
16
o
C
Wind Dir.:
S
Wind Speed:
19 km/h
Sunrise:
7:43
Sunset:
6:35
Observation:
Thunderstorms
As reported at HPSTS St Mary's, ON at 2:00 AM
5-day Forecast for
St Marys, ON
Date
Sun
19 Oct
Mon
20 Oct
Tue
21 Oct
Wed
22 Oct
Thu
23 Oct
Weather Condition
Weather
Thunder Storms
Rain
Thunder Storms
Rain
Rain
Temperature
(°C)
Low/High
9/19
6/13
6/14
4/10
4/9
Feels Like
(°C)
Low/High
6/19
4/13
3/14
1/10
0/7
Dew Point
(°C)
13
6
6
4
4
Humidity
(%)
87
65
73
83
83
Wind Speed
(kph)
27
18
21
21
19
Precipitation
Chance
(%)
80
57
80
80
80
Precipitation
Amount
(cm)
S=Snow, L=Liquid
Rain
1.73
Rain
0.13
Rain
0.58
Rain
0.94
Rain
0.74
Evapo-
transpiration
(cm/day)
0.15
0.23
0.2
0.13
0.13
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DTN Weather Summary
Bryce Anderson
–
DTN Meteorologist
Bio
Strong Front Bringing Areas of Heavy Rain, Severe Weather This Weekend
» More DTN Weather Commentary
Posted at 11:54AM Fri Oct 17, 2025 CDT
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