S
M
T
W
T
F
S
30
100°
79°
31
100°
77°
1
98°
80°
2
99°
75°
3
90°
74°
4
98°
75°
5
98°
78°
6
98°
75°
7
100°
77°
8
N/A
9
100°
74°
10
98°
74°
11
96°
75°
12
100°
74°
13
97°
76°
14
98°
74°
15
94°
71°
16
92°
70°
17
90°
68°
18
90°
65°
19
83°
64°
20
84°
65°
21
86°
64°
22
86°
63°
23
91°
69°
24
89°
68°
25
89°
68°
26
88°
67°
27
88°
68°
28
87°
68°
29
88°
67°
30
87°
67°
1
87°
66°
2
86°
65°
3
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Josephine
Josephine's September 2026 forecast shows daily high temperatures ranging from 83° to 100°, with overnight lows between 63° and 76°. The average high for September is 90° with an average low of 69°. 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 Josephine. See also: October | November | December.