S
M
T
W
T
F
S
30
88°
62°
31
86°
61°
1
81°
64°
2
82°
66°
3
86°
61°
4
86°
67°
5
87°
67°
6
88°
60°
7
86°
60°
8
80°
59°
9
80°
59°
10
83°
63°
11
85°
61°
12
85°
60°
13
79°
58°
14
78°
64°
15
82°
63°
16
85°
57°
17
84°
56°
18
76°
55°
19
75°
56°
20
76°
61°
21
75°
61°
22
77°
55°
23
75°
59°
24
74°
57°
25
75°
60°
26
78°
60°
27
80°
58°
28
81°
53°
29
74°
58°
30
74°
58°
1
73°
59°
2
78°
57°
3
77°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Farnham
Farnham's September 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 51° and 67°. The average high for September is 80° with an average low of 60°. 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 Farnham. See also: October | November | December.
