S
M
T
W
T
F
S
30
91°
58°
31
87°
57°
1
80°
55°
2
84°
55°
3
86°
59°
4
82°
63°
5
88°
62°
6
88°
55°
7
91°
57°
8
97°
58°
9
101°
67°
10
105°
69°
11
98°
63°
12
95°
60°
13
82°
60°
14
86°
53°
15
91°
50°
16
86°
56°
17
79°
53°
18
84°
55°
19
89°
56°
20
85°
59°
21
85°
58°
22
86°
55°
23
91°
56°
24
98°
57°
25
89°
62°
26
88°
56°
27
83°
57°
28
83°
51°
29
88°
52°
30
93°
58°
1
96°
55°
2
89°
59°
3
97°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Merced
Merced's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Merced. See also: October | November | December.
