S
M
T
W
T
F
S
30
80°
53°
31
79°
54°
1
80°
53°
2
77°
52°
3
77°
54°
4
78°
54°
5
77°
58°
6
82°
54°
7
83°
56°
8
84°
59°
9
81°
59°
10
77°
58°
11
85°
48°
12
76°
47°
13
74°
52°
14
74°
47°
15
75°
46°
16
72°
47°
17
71°
46°
18
74°
55°
19
78°
50°
20
77°
46°
21
74°
45°
22
69°
43°
23
69°
45°
24
Hist. Avg.
74°
47°
25
Hist. Avg.
74°
46°
26
Hist. Avg.
73°
46°
27
Hist. Avg.
73°
45°
28
Hist. Avg.
72°
45°
29
Hist. Avg.
72°
44°
30
Hist. Avg.
71°
44°
1
Hist. Avg.
71°
43°
2
Hist. Avg.
70°
43°
3
Hist. Avg.
70°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Farnam
Farnam's September 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 43° and 59°. The average high for September is 77° with an average low of 51°. 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 Farnam. See also: October | November | December.