S
M
T
W
T
F
S
30
86°
59°
31
85°
55°
1
82°
58°
2
81°
60°
3
81°
61°
4
83°
55°
5
81°
58°
6
82°
60°
7
85°
60°
8
85°
59°
9
83°
60°
10
82°
58°
11
83°
60°
12
84°
55°
13
83°
59°
14
82°
59°
15
81°
58°
16
78°
58°
17
81°
57°
18
82°
59°
19
80°
59°
20
78°
58°
21
77°
59°
22
79°
58°
23
80°
57°
24
79°
52°
25
78°
52°
26
75°
54°
27
77°
54°
28
80°
57°
29
78°
54°
30
73°
51°
1
Hist. Avg.
78°
58°
2
Hist. Avg.
78°
58°
3
Hist. Avg.
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Aix-en-Provence
Aix-en-Provence's September 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 51° and 61°. The average high for September is 81° 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 Aix-en-Provence. See also: October | November | December.