S
M
T
W
T
F
S
30
68°
53°
31
72°
54°
1
72°
56°
2
68°
52°
3
66°
52°
4
67°
53°
5
68°
54°
6
68°
54°
7
69°
53°
8
68°
55°
9
67°
56°
10
69°
59°
11
70°
58°
12
71°
58°
13
71°
60°
14
74°
60°
15
75°
59°
16
75°
58°
17
74°
57°
18
74°
57°
19
73°
56°
20
72°
58°
21
74°
58°
22
74°
57°
23
73°
59°
24
70°
59°
25
67°
58°
26
66°
57°
27
67°
58°
28
68°
59°
29
69°
58°
30
68°
59°
1
71°
56°
2
69°
56°
3
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Parnassus Heights
Parnassus Heights's September 2026 forecast shows daily high temperatures ranging from 66° to 75°, with overnight lows between 52° and 60°. The average high for September is 70° with an average low of 57°. 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 Parnassus Heights. See also: October | November | December.
