S
M
T
W
T
F
S
30
67°
52°
31
67°
53°
1
66°
52°
2
69°
52°
3
67°
54°
4
68°
53°
5
64°
52°
6
64°
50°
7
65°
48°
8
64°
52°
9
65°
51°
10
67°
47°
11
63°
52°
12
64°
51°
13
63°
51°
14
62°
52°
15
66°
51°
16
66°
47°
17
68°
51°
18
67°
51°
19
Hist. Avg.
63°
49°
20
Hist. Avg.
62°
49°
21
Hist. Avg.
62°
49°
22
Hist. Avg.
62°
48°
23
Hist. Avg.
61°
48°
24
Hist. Avg.
61°
48°
25
Hist. Avg.
61°
48°
26
Hist. Avg.
61°
48°
27
Hist. Avg.
60°
47°
28
Hist. Avg.
60°
47°
29
Hist. Avg.
60°
47°
30
Hist. Avg.
60°
47°
1
Hist. Avg.
59°
47°
2
Hist. Avg.
59°
46°
3
Hist. Avg.
59°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Watford
Watford's September 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 47° and 54°. The average high for September is 66° 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 Watford. See also: October | November | December.
