S
M
T
W
T
F
S
30
84°
48°
31
84°
52°
1
85°
55°
2
90°
55°
3
89°
48°
4
82°
52°
5
83°
48°
6
85°
46°
7
82°
47°
8
81°
49°
9
83°
51°
10
87°
53°
11
88°
55°
12
88°
56°
13
90°
53°
14
89°
47°
15
84°
47°
16
82°
48°
17
82°
50°
18
83°
52°
19
87°
51°
20
87°
48°
21
86°
50°
22
82°
49°
23
78°
41°
24
77°
42°
25
76°
41°
26
74°
43°
27
75°
47°
28
78°
46°
29
82°
41°
30
77°
42°
1
Hist. Avg.
85°
56°
2
Hist. Avg.
85°
56°
3
Hist. Avg.
84°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Phoenix Lake
Phoenix Lake's September 2026 forecast shows daily high temperatures ranging from 74° to 90°, with overnight lows between 41° and 56°. The average high for September is 83° with an average low of 49°. 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 Phoenix Lake. See also: October | November | December.