S
M
T
W
T
F
S
27
28°
15°
28
28°
21°
29
29°
25°
30
37°
26°
31
37°
26°
1
38°
25°
2
41°
23°
3
42°
16°
4
36°
14°
5
28°
10°
6
23°
17°
7
24°
20°
8
28°
17°
9
29°
14°
10
31°
4°
11
30°
6°
12
18°
9°
13
23°
5°
14
23°
6°
15
19°
6°
16
19°
8°
17
21°
15°
18
24°
4°
19
31°
3°
20
22°
9°
21
20°
19°
22
30°
18°
23
34°
8°
24
30°
19°
25
29°
20°
26
32°
21°
27
33°
20°
28
27°
19°
29
30°
21°
30
Hist. Avg.
29°
12°
31
Hist. Avg.
29°
12°
1
Hist. Avg.
29°
12°
2
Hist. Avg.
29°
12°
3
Hist. Avg.
29°
12°
4
Hist. Avg.
29°
12°
5
Hist. Avg.
29°
13°
6
Hist. Avg.
30°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Oshawa
Oshawa's January 2027 forecast shows daily high temperatures ranging from 18° to 42°, with overnight lows between 3° and 26°. The average high for January is 29° with an average low of 15°. 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 Oshawa. See also: February | March | April.
