S
M
T
W
T
F
S
30
92°
58°
31
85°
60°
1
68°
52°
2
69°
55°
3
64°
56°
4
73°
51°
5
77°
52°
6
76°
54°
7
85°
53°
8
91°
57°
9
91°
61°
10
94°
69°
11
89°
64°
12
81°
65°
13
76°
53°
14
85°
53°
15
87°
57°
16
73°
53°
17
75°
53°
18
86°
55°
19
91°
57°
20
84°
59°
21
89°
51°
22
94°
50°
23
95°
52°
24
92°
53°
25
90°
53°
26
80°
51°
27
82°
53°
28
85°
51°
29
84°
48°
30
82°
47°
1
85°
51°
2
80°
51°
3
85°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nice
Nice's September 2026 forecast shows daily high temperatures ranging from 73° to 95°, with overnight lows between 47° and 59°. The average high for September is 85° with an average low of 52°. 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 Nice. See also: October | November | December.