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Trenton, Ontario

48°F
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Trenton

Ontario

48°
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Trenton, 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

May

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
26
58°
31°
27
70°
36°
28
59°
49°
29
57°
44°
30
52°
37°
1
49°
32°
2
46°
36°
3
A shower in the p.m.; breezy
52°
44°
4
Cloudy and breezy
63°
50°
5
Rain at times
61°
42°
6
Clouds breaking for some sun
55°
38°
7
Cool with occasional rain
50°
37°
8
Breezy with showers around
52°
35°
9
Partly sunny, a few showers
54°
38°
10
A couple of morning showers
55°
39°
11
A bit of morning rain
56°
43°
12
Clouds and sun
58°
42°
13
Decreasing clouds
58°
44°
14
Cloudy with afternoon rain
60°
45°
15
Considerable cloudiness
59°
44°
16
Times of clouds and sun
61°
56°
17
Cloudy with a little rain
64°
50°
18
Periods of rain
66°
49°
19
Mostly cloudy
63°
47°
20
Partly sunny
66°
49°
21
Cloudy
66°
50°
22
Cloudy with rain tapering off
63°
43°
23
Windy with periods of rain
58°
41°
24
A little afternoon rain
59°
42°
25
Partial sunshine
59°
43°
26
Rain becoming steadier
61°
43°
27
Sun, then clouds
61°
44°
28
Partly sunny
62°
43°
29
Increasing cloudiness
61°
43°
30
Cloudy
63°
46°
31
Periods of rain
64°
49°
1
Partly sunny
64°
47°
2
Plenty of sunshine
65°
48°
3
Mostly cloudy
67°
54°
4
Times of clouds and sun
67°
52°
5
Partly sunny
66°
54°
6
A thick cloud cover
72°
55°

Temperature Graph

°F
70° 62° 54° 46° 38° May
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 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

May Weather in Trenton

Trenton's May 2026 forecast shows daily high temperatures ranging from 50° to 72°, with overnight lows between 35° and 56°. The average high for May is 61° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Trenton. See also: June | July | August.

Further Ahead

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Weather Near Trenton:

  • Buffalo, NY
  • Markham, Ontario
  • Toronto, Ontario
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