S
M
T
W
T
F
S
30
70°
53°
31
68°
55°
1
70°
55°
2
74°
53°
3
72°
54°
4
76°
56°
5
80°
53°
6
78°
51°
7
78°
49°
8
87°
50°
9
102°
58°
10
90°
59°
11
73°
57°
12
75°
56°
13
78°
52°
14
79°
50°
15
68°
52°
16
70°
55°
17
72°
53°
18
75°
51°
19
70°
55°
20
68°
53°
21
66°
56°
22
67°
56°
23
80°
52°
24
78°
53°
25
78°
52°
26
71°
49°
27
68°
52°
28
67°
52°
29
78°
48°
30
79°
50°
1
73°
54°
2
75°
54°
3
97°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Watsonville
Watsonville'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 Watsonville. See also: October | November | December.
