S
M
T
W
T
F
S
30
78°
56°
31
80°
57°
1
83°
58°
2
83°
54°
3
77°
56°
4
76°
54°
5
74°
53°
6
75°
55°
7
82°
57°
8
82°
57°
9
81°
56°
10
79°
56°
11
80°
54°
12
81°
51°
13
78°
52°
14
77°
47°
15
73°
49°
16
73°
51°
17
76°
53°
18
79°
54°
19
76°
54°
20
Hist. Avg.
82°
48°
21
Hist. Avg.
81°
48°
22
Hist. Avg.
81°
47°
23
Hist. Avg.
80°
47°
24
Hist. Avg.
80°
46°
25
Hist. Avg.
79°
46°
26
Hist. Avg.
79°
45°
27
Hist. Avg.
78°
45°
28
Hist. Avg.
78°
44°
29
Hist. Avg.
78°
44°
30
Hist. Avg.
77°
43°
1
Hist. Avg.
76°
43°
2
Hist. Avg.
76°
42°
3
Hist. Avg.
76°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Greenhorn
Greenhorn's September 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 47° and 58°. The average high for September is 78° with an average low of 54°. 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 Greenhorn. See also: October | November | December.
