S
M
T
W
T
F
S
1
37°
22°
2
51°
24°
3
46°
32°
4
44°
36°
5
53°
39°
6
71°
50°
7
60°
32°
8
63°
35°
9
72°
46°
10
78°
38°
11
39°
29°
12
46°
29°
13
47°
31°
14
43°
32°
15
61°
22°
16
26°
9°
17
26°
9°
18
48°
26°
19
71°
35°
20
76°
42°
21
79°
43°
22
59°
28°
23
49°
27°
24
59°
28°
25
72°
37°
26
83°
30°
27
49°
24°
28
50°
24°
29
61°
42°
30
80°
56°
31
73°
36°
1
44°
36°
2
70°
41°
3
61°
42°
4
52°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Ottawa
Ottawa's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Ottawa. See also: April | May | June.
