S
M
T
W
T
F
S
28
67°
52°
29
63°
51°
30
63°
54°
1
69°
54°
2
70°
51°
3
69°
48°
4
67°
49°
5
68°
52°
6
69°
52°
7
68°
51°
8
68°
53°
9
69°
54°
10
70°
53°
11
67°
54°
12
70°
53°
13
70°
52°
14
65°
50°
15
65°
50°
16
66°
52°
17
65°
53°
18
67°
53°
19
69°
54°
20
70°
48°
21
65°
47°
22
65°
48°
23
67°
47°
24
66°
46°
25
65°
48°
26
66°
49°
27
68°
51°
28
68°
50°
29
65°
50°
30
65°
51°
31
66°
50°
1
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Siero
Siero's July 2026 forecast shows daily high temperatures ranging from 63° to 70°, with overnight lows between 46° and 54°. The average high for July is 67° 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 July weather will actually feel in Siero. See also: August | September | October.