S
M
T
W
T
F
S
28
93°
81°
29
94°
79°
30
94°
78°
1
95°
78°
2
97°
78°
3
96°
79°
4
97°
78°
5
97°
79°
6
97°
79°
7
97°
79°
8
94°
79°
9
90°
74°
10
91°
76°
11
96°
78°
12
96°
79°
13
95°
79°
14
94°
78°
15
93°
80°
16
94°
79°
17
96°
79°
18
95°
79°
19
97°
79°
20
101°
76°
21
99°
76°
22
102°
77°
23
92°
80°
24
95°
80°
25
98°
78°
26
98°
78°
27
100°
80°
28
99°
81°
29
100°
80°
30
101°
79°
31
100°
81°
1
104°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Donna
Donna's July 2026 forecast shows daily high temperatures ranging from 98° to 104°, with overnight lows between 78° and 81°. The average high for July is 100° with an average low of 80°. 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 Donna. See also: August | September | October.