S
M
T
W
T
F
S
27
86°
58°
28
86°
61°
29
85°
55°
30
84°
60°
1
84°
63°
2
90°
61°
3
83°
60°
4
86°
61°
5
89°
60°
6
88°
55°
7
83°
56°
8
82°
55°
9
84°
56°
10
80°
53°
11
Hist. Avg.
83°
56°
12
Hist. Avg.
82°
56°
13
Hist. Avg.
82°
56°
14
Hist. Avg.
82°
55°
15
Hist. Avg.
82°
55°
16
Hist. Avg.
81°
55°
17
Hist. Avg.
81°
55°
18
Hist. Avg.
81°
54°
19
Hist. Avg.
81°
54°
20
Hist. Avg.
80°
54°
21
Hist. Avg.
80°
54°
22
Hist. Avg.
80°
54°
23
Hist. Avg.
80°
53°
24
Hist. Avg.
80°
53°
25
Hist. Avg.
80°
53°
26
Hist. Avg.
80°
53°
27
Hist. Avg.
79°
52°
28
Hist. Avg.
79°
52°
29
Hist. Avg.
79°
52°
30
Hist. Avg.
79°
52°
31
Hist. Avg.
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Grand Terrace
Grand Terrace's October 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 53° and 63°. The average high for October is 85° with an average low of 58°. 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 Grand Terrace. See also: November | December | January.
