S
M
T
W
T
F
S
30
92°
51°
31
82°
53°
1
72°
57°
2
74°
56°
3
68°
55°
4
74°
48°
5
80°
47°
6
80°
45°
7
90°
48°
8
96°
50°
9
98°
55°
10
100°
62°
11
94°
52°
12
83°
54°
13
77°
52°
14
89°
48°
15
91°
51°
16
78°
48°
17
79°
53°
18
87°
50°
19
93°
51°
20
85°
54°
21
88°
52°
22
88°
50°
23
93°
50°
24
91°
51°
25
77°
59°
26
79°
48°
27
77°
52°
28
81°
47°
29
93°
48°
30
97°
51°
1
96°
50°
2
97°
52°
3
100°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ukiah
Ukiah'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 Ukiah. See also: October | November | December.
