S
M
T
W
T
F
S
30
90°
75°
31
90°
78°
1
89°
78°
2
91°
75°
3
91°
77°
4
92°
79°
5
93°
75°
6
93°
77°
7
91°
72°
8
91°
78°
9
92°
79°
10
93°
78°
11
92°
76°
12
93°
78°
13
93°
77°
14
92°
78°
15
91°
77°
16
90°
76°
17
90°
78°
18
91°
76°
19
91°
75°
20
90°
77°
21
89°
76°
22
88°
74°
23
86°
74°
24
86°
77°
25
87°
77°
26
85°
76°
27
86°
77°
28
86°
78°
29
87°
77°
30
86°
76°
1
86°
77°
2
87°
78°
3
88°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Watergate
Watergate's September 2026 forecast shows daily high temperatures ranging from 85° to 93°, with overnight lows between 74° and 79°. The average high for September is 89° with an average low of 77°. 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 Watergate. See also: October | November | December.
