S
M
T
W
T
F
S
30
89°
58°
31
89°
58°
1
88°
56°
2
87°
55°
3
86°
53°
4
84°
53°
5
81°
47°
6
78°
53°
7
81°
54°
8
85°
55°
9
87°
55°
10
77°
47°
11
74°
52°
12
80°
52°
13
83°
55°
14
85°
56°
15
86°
52°
16
81°
46°
17
74°
48°
18
81°
48°
19
74°
45°
20
82°
53°
21
85°
53°
22
74°
46°
23
Hist. Avg.
79°
47°
24
Hist. Avg.
78°
47°
25
Hist. Avg.
78°
46°
26
Hist. Avg.
78°
46°
27
Hist. Avg.
77°
46°
28
Hist. Avg.
77°
45°
29
Hist. Avg.
76°
45°
30
Hist. Avg.
76°
45°
1
Hist. Avg.
75°
44°
2
Hist. Avg.
75°
44°
3
Hist. Avg.
74°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Biggs Junction
Biggs Junction's September 2026 forecast shows daily high temperatures ranging from 74° to 89°, with overnight lows between 45° and 58°. The average high for September is 82° with an average low of 52°. 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 Biggs Junction. See also: October | November | December.