S
M
T
W
T
F
S
30
86°
49°
31
88°
50°
1
90°
52°
2
92°
52°
3
88°
51°
4
85°
46°
5
84°
46°
6
85°
47°
7
84°
46°
8
83°
45°
9
84°
51°
10
82°
51°
11
80°
45°
12
82°
45°
13
81°
51°
14
84°
52°
15
89°
52°
16
90°
49°
17
89°
51°
18
88°
46°
19
88°
48°
20
87°
49°
21
88°
50°
22
87°
46°
23
86°
48°
24
82°
49°
25
77°
47°
26
77°
47°
27
75°
45°
28
76°
47°
29
74°
45°
30
74°
47°
1
79°
45°
2
77°
45°
3
81°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yreka
Yreka's September 2026 forecast shows daily high temperatures ranging from 74° to 92°, with overnight lows between 45° and 52°. The average high for September is 83° with an average low of 48°. 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 Yreka. See also: October | November | December.
