S
M
T
W
T
F
S
30
71°
48°
31
70°
47°
1
72°
54°
2
73°
49°
3
72°
53°
4
75°
50°
5
75°
53°
6
Hist. Avg.
76°
45°
7
Hist. Avg.
75°
45°
8
Hist. Avg.
75°
44°
9
Hist. Avg.
74°
44°
10
Hist. Avg.
74°
44°
11
Hist. Avg.
74°
43°
12
Hist. Avg.
73°
43°
13
Hist. Avg.
73°
42°
14
Hist. Avg.
72°
42°
15
Hist. Avg.
72°
42°
16
Hist. Avg.
71°
41°
17
Hist. Avg.
71°
41°
18
Hist. Avg.
70°
40°
19
Hist. Avg.
70°
40°
20
Hist. Avg.
70°
40°
21
Hist. Avg.
69°
39°
22
Hist. Avg.
69°
39°
23
Hist. Avg.
68°
38°
24
Hist. Avg.
68°
38°
25
Hist. Avg.
67°
38°
26
Hist. Avg.
67°
37°
27
Hist. Avg.
66°
37°
28
Hist. Avg.
66°
37°
29
Hist. Avg.
66°
36°
30
Hist. Avg.
65°
36°
1
Hist. Avg.
65°
36°
2
Hist. Avg.
64°
35°
3
Hist. Avg.
64°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Watford City
Watford City's September 2026 forecast shows daily high temperatures ranging from 70° to 75°, with overnight lows between 47° and 54°. The average high for September is 73° 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 City. See also: October | November | December.