S
M
T
W
T
F
S
1
64°
33°
2
72°
34°
3
50°
34°
4
63°
27°
5
70°
29°
6
42°
28°
7
56°
20°
8
74°
28°
9
71°
45°
10
60°
32°
11
50°
26°
12
69°
26°
13
70°
40°
14
75°
36°
15
38°
18°
16
52°
18°
17
76°
29°
18
84°
42°
19
86°
42°
20
87°
45°
21
90°
39°
22
65°
39°
23
72°
35°
24
81°
43°
25
91°
48°
26
72°
42°
27
49°
37°
28
77°
27°
29
82°
49°
30
82°
49°
31
62°
38°
1
55°
36°
2
73°
31°
3
56°
36°
4
67°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Johnstown
Johnstown's March 2026 forecast shows daily high temperatures ranging from 67° to 67°, with overnight lows between 30° and 30°. The average high for March is 67° with an average low of 30°. 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 Johnstown. See also: April | May | June.
