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St. Clair, Ontario

68°F
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St. Clair

Ontario

68°
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St. Clair, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

June

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
31
75°
41°
1
73°
43°
2
75°
45°
3
81°
43°
4
84°
48°
5
84°
56°
6
82°
61°
7
Turning cloudy; not as warm
73°
51°
8
Mostly sunny and warmer
84°
65°
9
An afternoon thunderstorm
82°
68°
10
Mainly cloudy, a t-storm; hot
90°
69°
11
Warm; a p.m. t-storm or two
89°
66°
12
Partly sunny and less humid
85°
58°
13
Mostly sunny and warm
82°
59°
14
Rain and a thunderstorm
76°
55°
15
Cloudy, a shower and t-storm
74°
53°
16
Some rain and a thunderstorm
73°
54°
17
A little afternoon rain
75°
56°
18
A little afternoon rain
76°
57°
19
Mainly cloudy, a little rain
75°
58°
20
Chance for a thunderstorm
77°
57°
21
Clouds giving way to some sun
79°
62°
22
Rain becoming steadier; humid
73°
63°
23
Decreasing clouds
74°
63°
24
A couple of afternoon showers
78°
65°
25
Cloudy and less humid
78°
64°
26
Mostly cloudy and humid
75°
66°
27
A t-storm around in the a.m.
82°
64°
28
Partly sunny and less humid
75°
63°
29
Times of clouds and sun
74°
64°
30
Overcast and humid
78°
66°
1
Humid; a little p.m. rain
79°
64°
2
Sun, then clouds; less humid
76°
62°
3
A shower and thunderstorm
76°
66°
4
A little morning rain; cloudy
77°
61°

Temperature Graph

°F
90° 80° 70° 60° 50° Jun
Today 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

June Weather in St. Clair

St. Clair's June 2026 forecast shows daily high temperatures ranging from 73° to 90°, with overnight lows between 51° and 69°. The average high for June is 78° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in St. Clair. See also: July | August | September.

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