S
M
T
W
T
F
S
30
79°
46°
31
78°
47°
1
78°
48°
2
81°
48°
3
82°
49°
4
82°
49°
5
83°
48°
6
83°
48°
7
82°
47°
8
83°
49°
9
83°
48°
10
76°
48°
11
76°
47°
12
81°
49°
13
82°
48°
14
83°
48°
15
82°
47°
16
81°
47°
17
79°
46°
18
80°
47°
19
81°
47°
20
Hist. Avg.
65°
48°
21
Hist. Avg.
64°
48°
22
Hist. Avg.
64°
48°
23
Hist. Avg.
64°
48°
24
Hist. Avg.
64°
48°
25
Hist. Avg.
64°
48°
26
Hist. Avg.
64°
48°
27
Hist. Avg.
64°
48°
28
Hist. Avg.
64°
48°
29
Hist. Avg.
64°
48°
30
Hist. Avg.
64°
48°
1
Hist. Avg.
64°
48°
2
Hist. Avg.
64°
48°
3
Hist. Avg.
64°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Longvale
Longvale's September 2026 forecast shows daily high temperatures ranging from 76° to 83°, with overnight lows between 46° and 49°. The average high for September is 81° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Longvale. See also: October | November | December.