S
M
T
W
T
F
S
30
83°
56°
31
84°
50°
1
84°
54°
2
90°
54°
3
96°
56°
4
100°
62°
5
91°
71°
6
94°
64°
7
93°
57°
8
85°
58°
9
N/A
10
77°
50°
11
83°
51°
12
86°
53°
13
90°
57°
14
92°
61°
15
91°
57°
16
84°
56°
17
83°
55°
18
84°
57°
19
85°
59°
20
85°
57°
21
83°
56°
22
78°
57°
23
81°
60°
24
80°
58°
25
78°
58°
26
76°
57°
27
77°
57°
28
78°
56°
29
78°
53°
30
68°
50°
1
68°
49°
2
73°
55°
3
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Castrillo de Duero
Castrillo de Duero's September 2026 forecast shows daily high temperatures ranging from 68° to 92°, with overnight lows between 49° and 61°. The average high for September is 81° with an average low of 56°. 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 Castrillo de Duero. See also: October | November | December.
