S
M
T
W
T
F
S
27
87°
71°
28
81°
67°
29
84°
63°
30
88°
63°
1
93°
66°
2
100°
74°
3
99°
77°
4
98°
77°
5
99°
80°
6
98°
82°
7
103°
72°
8
101°
70°
9
96°
67°
10
89°
66°
11
82°
62°
12
73°
58°
13
76°
56°
14
76°
57°
15
84°
56°
16
86°
58°
17
87°
57°
18
86°
58°
19
87°
59°
20
80°
53°
21
82°
58°
22
83°
57°
23
83°
57°
24
82°
57°
25
82°
56°
26
81°
57°
27
82°
56°
28
82°
56°
29
81°
55°
30
81°
55°
31
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Fontana
Fontana's October 2026 forecast shows daily high temperatures ranging from 73° to 103°, with overnight lows between 53° and 72°. The average high for October is 84° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Fontana. See also: November | December | January.
