S
M
T
W
T
F
S
1
80°
63°
2
70°
55°
3
76°
50°
4
68°
52°
5
67°
51°
6
66°
55°
7
69°
56°
8
79°
64°
9
71°
52°
10
65°
53°
11
80°
50°
12
87°
71°
13
89°
69°
14
81°
62°
15
88°
58°
16
89°
64°
17
95°
75°
18
95°
69°
19
98°
70°
20
97°
72°
21
88°
69°
22
84°
63°
23
85°
61°
24
86°
61°
25
86°
60°
26
86°
58°
27
87°
63°
28
86°
62°
29
87°
66°
30
80°
61°
31
67°
59°
1
67°
55°
2
63°
54°
3
73°
52°
4
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Fontana
Fontana'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 Fontana. See also: April | May | June.
