S
M
T
W
T
F
S
27
77°
40°
28
78°
41°
29
80°
44°
30
81°
47°
1
84°
50°
2
85°
56°
3
79°
61°
4
72°
61°
5
81°
53°
6
78°
50°
7
80°
51°
8
83°
49°
9
77°
51°
10
78°
57°
11
71°
59°
12
82°
51°
13
84°
47°
14
85°
48°
15
87°
55°
16
83°
51°
17
59°
38°
18
69°
32°
19
70°
32°
20
74°
34°
21
74°
33°
22
73°
33°
23
73°
34°
24
72°
34°
25
74°
42°
26
74°
44°
27
75°
46°
28
73°
47°
29
74°
48°
30
76°
49°
31
72°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Fontana Dam
Fontana Dam's October 2026 forecast shows daily high temperatures ranging from 72° to 76°, with overnight lows between 42° and 56°. The average high for October is 74° with an average low of 47°. 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 Dam. See also: November | December | January.