S
M
T
W
T
F
S
27
78°
55°
28
85°
47°
29
99°
47°
30
98°
51°
1
95°
50°
2
96°
52°
3
103°
55°
4
98°
59°
5
100°
58°
6
102°
55°
7
101°
54°
8
100°
52°
9
90°
52°
10
76°
44°
11
80°
44°
12
78°
46°
13
82°
44°
14
82°
48°
15
90°
52°
16
88°
51°
17
89°
50°
18
90°
52°
19
88°
53°
20
90°
52°
21
88°
53°
22
76°
48°
23
79°
51°
24
78°
52°
25
78°
52°
26
77°
51°
27
77°
51°
28
76°
50°
29
76°
50°
30
75°
52°
31
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. Helena
St. Helena's October 2026 forecast shows daily high temperatures ranging from 74° to 90°, with overnight lows between 44° and 53°. The average high for October is 82° with an average low of 50°. 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 St. Helena. See also: November | December | January.