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Dundas, Ontario

37°F
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Dundas

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37°
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Dundas, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Monthly

Air Quality Health & Activities
Yellow Advisory - Frost

December

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
29
Cloudy with a little snow
36°
28°
30
Cloudy
37°
24°
1
Some morning snow; cloudy
37°
29°
2
Snow and rain in the p.m.
38°
24°
3
A mix of snow, sleet and rain
39°
23°
4
Rather cloudy with some snow
32°
28°
5
Cloudy with some snow
35°
30°
6
Considerable cloudiness
38°
34°
7
Periods of rain
42°
33°
8
Periods of rain
47°
28°
9
Rain and sleet in the morning
48°
27°
10
Some snow; windy, colder
36°
26°
11
Cloudy with some snow
35°
24°
12
Remaining cloudy
34°
22°
13
A.M. flurries; mostly cloudy
34°
23°
14
Partial sunshine
33°
20°
15
Windy with on-and-off snow
31°
15°
16
Overcast with a little snow
29°
24°
17
Some afternoon snow
32°
23°
18
Mostly cloudy
34°
26°
19
Mostly cloudy with some snow
35°
27°
20
Mostly cloudy
35°
29°
21
Rain and ice in the morning
41°
24°
22
A bit of ice in the morning
41°
25°
23
Clouds and sun
36°
29°
24
Turning cloudy
39°
29°
25
Rain and ice in the morning
42°
24°
26
Considerable cloudiness
38°
21°
27
Cloudy
35°
18°
28
Periods of snow
33°
16°
29
Cloudy with some snow
32°
19°
30
Mostly cloudy
28°
10°
31
Periods of snow
27°
12°
1
Very windy; some snow, cold
22°
15°
2
Snow at times
31°
15°

Temperature Graph

°F
50° 40° 30° 20° 10° Dec
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 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

December Weather in Dundas

Dundas's December 2026 forecast shows daily high temperatures ranging from 22° to 48°, with overnight lows between 10° and 34°. The average high for December is 35° with an average low of 24°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Dundas. See also: January | February | March.

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Weather Near Dundas:

  • Hamilton, Ontario
  • Mississauga Valley, Ontario
  • Toronto, Ontario
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