S
M
T
W
T
F
S
1
39°
27°
2
30°
19°
3
36°
18°
4
45°
33°
5
41°
35°
6
39°
35°
7
47°
35°
8
58°
40°
9
68°
34°
10
67°
36°
11
61°
45°
12
56°
33°
13
42°
28°
14
51°
34°
15
44°
30°
16
55°
44°
17
54°
31°
18
34°
24°
19
40°
24°
20
49°
34°
21
56°
39°
22
50°
42°
23
50°
35°
24
46°
32°
25
48°
32°
26
61°
44°
27
57°
32°
28
42°
29°
29
48°
24°
30
61°
44°
31
66°
49°
1
72°
50°
2
50°
39°
3
57°
39°
4
67°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Smithtown Town
Smithtown Town'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 Smithtown Town. See also: April | May | June.