S
M
T
W
T
F
S
30
81°
59°
31
76°
54°
1
75°
50°
2
79°
47°
3
77°
49°
4
78°
53°
5
76°
60°
6
77°
61°
7
80°
65°
8
81°
64°
9
79°
62°
10
78°
60°
11
76°
61°
12
77°
59°
13
76°
60°
14
75°
60°
15
81°
58°
16
84°
62°
17
83°
61°
18
76°
54°
19
77°
56°
20
78°
58°
21
81°
59°
22
78°
59°
23
79°
60°
24
76°
56°
25
76°
58°
26
80°
59°
27
81°
59°
28
80°
58°
29
80°
57°
30
78°
58°
1
79°
57°
2
77°
57°
3
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Julian
Julian's September 2026 forecast shows daily high temperatures ranging from 75° to 84°, with overnight lows between 47° and 65°. The average high for September is 78° 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 September weather will actually feel in Julian. See also: October | November | December.