S
M
T
W
T
F
S
27
36°
22°
28
34°
20°
29
33°
22°
30
30°
14°
31
29°
16°
1
25°
19°
2
34°
17°
3
31°
15°
4
Hist. Avg.
32°
20°
5
Hist. Avg.
32°
20°
6
Hist. Avg.
32°
20°
7
Hist. Avg.
32°
19°
8
Hist. Avg.
32°
19°
9
Hist. Avg.
31°
19°
10
Hist. Avg.
31°
19°
11
Hist. Avg.
31°
19°
12
Hist. Avg.
31°
18°
13
Hist. Avg.
31°
18°
14
Hist. Avg.
31°
18°
15
Hist. Avg.
31°
18°
16
Hist. Avg.
31°
18°
17
Hist. Avg.
31°
18°
18
Hist. Avg.
31°
18°
19
Hist. Avg.
31°
18°
20
Hist. Avg.
31°
18°
21
Hist. Avg.
31°
18°
22
Hist. Avg.
31°
18°
23
Hist. Avg.
31°
18°
24
Hist. Avg.
31°
18°
25
Hist. Avg.
31°
18°
26
Hist. Avg.
31°
18°
27
Hist. Avg.
32°
18°
28
Hist. Avg.
32°
18°
29
Hist. Avg.
32°
18°
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 25° to 36°, with overnight lows between 14° and 22°. The average high for January is 32° with an average low of 18°. 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.
