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Area Conditions for
St Marys, ON
Change Zip Code:
Temperature:
21
o
C
Feels Like:
21
o
C
Humidity:
97%
Barometer:
29.94
Dew Point:
20
o
C
Wind Dir.:
SSE
Wind Speed:
9 km/h
Sunrise:
5:56
Sunset:
9:04
Observation:
Thunderstorms
As reported at HPSTS St Mary's, ON at 3:00 AM
5-day Forecast for
St Marys, ON
Date
Sat
12 Jul
Sun
13 Jul
Mon
14 Jul
Tue
15 Jul
Wed
16 Jul
Weather Condition
Weather
Thunder Storms
Thunder Storms
Clear
Thunder Storms
Thunder Storms
Temperature
(°C)
Low/High
20/31
20/27
17/28
18/29
19/29
Feels Like
(°C)
Low/High
20/33
20/28
17/28
18/31
19/30
Dew Point
(°C)
21
19
17
17
18
Humidity
(%)
68
72
60
61
64
Wind Speed
(kph)
21
13
11
8
13
Precipitation
Chance
(%)
53
49
-
33
43
Precipitation
Amount
(cm)
S=Snow, L=Liquid
Rain
0.33
Rain
0.48
None
Rain
0.05
Rain
0.51
Evapo-
transpiration
(cm/day)
0.53
0.43
0.61
0.48
0.48
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DTN Weather Summary
Bryce Anderson
–
DTN Meteorologist
Bio
System Sweeping Through Country This Weekend
» More DTN Weather Commentary
Posted at 12:08PM Fri Jul 11, 2025 CDT
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DTN Weather Summary
