S
M
T
W
T
F
S
27
25°
4°
28
18°
10°
29
19°
16°
30
30°
16°
31
30°
15°
1
30°
19°
2
33°
14°
3
35°
6°
4
32°
2°
5
26°
0°
6
14°
8°
7
17°
13°
8
25°
10°
9
26°
9°
10
24°
-3°
11
26°
-4°
12
10°
-1°
13
14°
-7°
14
20°
2°
15
13°
4°
16
17°
4°
17
15°
6°
18
17°
-5°
19
28°
-5°
20
10°
1°
21
13°
11°
22
23°
10°
23
28°
1°
24
28°
6°
25
20°
12°
26
29°
12°
27
31°
14°
28
32°
13°
29
Hist. Avg.
23°
6°
30
Hist. Avg.
23°
6°
31
Hist. Avg.
23°
6°
1
Hist. Avg.
23°
6°
2
Hist. Avg.
23°
7°
3
Hist. Avg.
23°
7°
4
Hist. Avg.
23°
7°
5
Hist. Avg.
23°
7°
6
Hist. Avg.
24°
7°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Ottawa
Ottawa's January 2027 forecast shows daily high temperatures ranging from 10° to 35°, with overnight lows between -7° and 19°. The average high for January is 23° with an average low of 6°. 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 Ottawa. See also: February | March | April.
