S
M
T
W
T
F
S
27
40°
26°
28
39°
25°
29
35°
25°
30
33°
24°
31
32°
24°
1
37°
23°
2
37°
26°
3
38°
27°
4
39°
24°
5
37°
21°
6
36°
19°
7
29°
20°
8
28°
24°
9
34°
24°
10
37°
23°
11
37°
24°
12
35°
24°
13
37°
23°
14
38°
16°
15
35°
12°
16
35°
14°
17
24°
22°
18
31°
21°
19
34°
10°
20
34°
11°
21
29°
16°
22
28°
20°
23
29°
24°
24
36°
22°
25
36°
21°
26
33°
22°
27
34°
12°
28
36°
20°
29
34°
18°
30
Hist. Avg.
30°
17°
31
Hist. Avg.
30°
17°
1
Hist. Avg.
30°
17°
2
Hist. Avg.
30°
17°
3
Hist. Avg.
30°
17°
4
Hist. Avg.
30°
17°
5
Hist. Avg.
30°
17°
6
Hist. Avg.
30°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in St. John's
St. John's's January 2027 forecast shows daily high temperatures ranging from 24° to 40°, with overnight lows between 10° and 27°. The average high for January is 34° with an average low of 21°. 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. John's. See also: February | March | April.