S
M
T
W
T
F
S
31
92°
61°
1
95°
59°
2
98°
63°
3
96°
60°
4
93°
67°
5
93°
63°
6
86°
66°
7
86°
60°
8
87°
59°
9
81°
55°
10
81°
53°
11
78°
58°
12
82°
54°
13
86°
54°
14
72°
56°
15
74°
48°
16
81°
48°
17
87°
48°
18
85°
54°
19
86°
54°
20
87°
57°
21
72°
50°
22
72°
44°
23
80°
42°
24
86°
46°
25
86°
51°
26
74°
42°
27
82°
45°
28
84°
48°
29
79°
55°
30
77°
46°
1
73°
48°
2
65°
48°
3
68°
46°
4
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pendleton
Pendleton's September 2025 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 Pendleton. See also: October | November | December.
