S
M
T
W
T
F
S
30
99°
76°
31
97°
75°
1
98°
77°
2
100°
78°
3
101°
78°
4
100°
76°
5
99°
74°
6
96°
73°
7
96°
74°
8
95°
73°
9
91°
72°
10
93°
73°
11
92°
72°
12
94°
70°
13
93°
70°
14
88°
69°
15
85°
62°
16
89°
67°
17
89°
68°
18
78°
66°
19
79°
67°
20
80°
66°
21
80°
65°
22
81°
65°
23
80°
61°
24
79°
65°
25
79°
60°
26
77°
56°
27
75°
55°
28
76°
55°
29
76°
56°
30
77°
56°
1
76°
55°
2
79°
56°
3
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Odessa
Odessa's September 2026 forecast shows daily high temperatures ranging from 75° to 101°, with overnight lows between 53° and 78°. The average high for September is 86° with an average low of 66°. 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 Odessa. See also: October | November | December.