S
M
T
W
T
F
S
1
13°
-21°
2
23°
-27°
3
43°
-3°
4
49°
16°
5
35°
20°
6
45°
18°
7
51°
34°
8
41°
29°
9
57°
29°
10
40°
25°
11
33°
25°
12
26°
13°
13
25°
9°
14
26°
-1°
15
28°
-1°
16
50°
21°
17
21°
-7°
18
22°
-16°
19
32°
11°
20
29°
11°
21
33°
25°
22
34°
26°
23
31°
4°
24
31°
-7°
25
39°
21°
26
41°
16°
27
25°
1°
28
30°
1°
29
47°
20°
30
56°
24°
31
38°
32°
1
32°
18°
2
35°
18°
3
53°
31°
4
38°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in South Algonquin
South Algonquin'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 South Algonquin. See also: April | May | June.