S
M
T
W
T
F
S
27
31°
20°
28
32°
26°
29
33°
29°
30
41°
30°
31
42°
32°
1
42°
30°
2
44°
27°
3
45°
20°
4
40°
18°
5
30°
13°
6
27°
19°
7
27°
24°
8
31°
19°
9
31°
20°
10
32°
9°
11
32°
8°
12
21°
13°
13
25°
10°
14
25°
10°
15
22°
9°
16
21°
12°
17
24°
16°
18
26°
10°
19
33°
8°
20
28°
12°
21
23°
22°
22
35°
22°
23
38°
12°
24
35°
24°
25
32°
22°
26
34°
24°
27
34°
18°
28
31°
24°
29
33°
24°
30
Hist. Avg.
32°
18°
31
Hist. Avg.
32°
19°
1
Hist. Avg.
32°
19°
2
Hist. Avg.
32°
19°
3
Hist. Avg.
32°
19°
4
Hist. Avg.
32°
19°
5
Hist. Avg.
32°
19°
6
Hist. Avg.
32°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in St. Catharines
St. Catharines's January 2027 forecast shows daily high temperatures ranging from 21° to 45°, with overnight lows between 8° and 32°. The average high for January is 32° with an average low of 19°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in St. Catharines. See also: February | March | April.
