S
M
T
W
T
F
S
30
85°
61°
31
85°
61°
1
83°
60°
2
81°
60°
3
78°
59°
4
77°
53°
5
78°
55°
6
79°
60°
7
82°
56°
8
80°
59°
9
79°
59°
10
77°
58°
11
77°
53°
12
75°
54°
13
75°
56°
14
77°
57°
15
77°
57°
16
80°
55°
17
80°
55°
18
79°
56°
19
78°
53°
20
73°
47°
21
71°
48°
22
72°
48°
23
75°
52°
24
76°
53°
25
77°
54°
26
76°
46°
27
71°
47°
28
70°
45°
29
69°
44°
30
69°
48°
1
70°
52°
2
Hist. Avg.
73°
50°
3
Hist. Avg.
73°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Slemp
Slemp's September 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 44° and 61°. The average high for September is 77° 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 Slemp. See also: October | November | December.
