S
M
T
W
T
F
S
30
102°
72°
31
101°
76°
1
99°
75°
2
99°
74°
3
94°
74°
4
99°
73°
5
101°
75°
6
100°
72°
7
102°
76°
8
102°
75°
9
99°
75°
10
98°
76°
11
98°
75°
12
100°
74°
13
99°
71°
14
93°
70°
15
89°
71°
16
91°
67°
17
89°
71°
18
93°
69°
19
89°
67°
20
79°
53°
21
92°
71°
22
92°
70°
23
91°
70°
24
91°
69°
25
88°
69°
26
88°
68°
27
89°
68°
28
89°
67°
29
87°
68°
30
86°
65°
1
80°
58°
2
77°
56°
3
77°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blossom
Blossom's September 2026 forecast shows daily high temperatures ranging from 77° to 102°, with overnight lows between 53° and 76°. The average high for September is 91° with an average low of 68°. 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 Blossom. See also: October | November | December.