S
M
T
W
T
F
S
26
85°
69°
27
90°
72°
28
91°
69°
29
85°
70°
30
86°
72°
31
88°
71°
1
90°
71°
2
84°
75°
3
89°
75°
4
88°
73°
5
88°
77°
6
93°
77°
7
92°
75°
8
91°
75°
9
95°
74°
10
96°
76°
11
95°
76°
12
88°
72°
13
87°
72°
14
86°
71°
15
87°
70°
16
85°
69°
17
83°
71°
18
91°
74°
19
91°
75°
20
90°
73°
21
90°
72°
22
88°
74°
23
91°
75°
24
92°
75°
25
91°
74°
26
89°
74°
27
85°
73°
28
88°
73°
29
86°
72°
30
87°
73°
31
87°
73°
1
88°
71°
2
81°
65°
3
80°
66°
4
80°
67°
5
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Nationals Park
Nationals Park's August 2026 forecast shows daily high temperatures ranging from 80° to 96°, with overnight lows between 65° and 77°. The average high for August is 88° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Nationals Park. See also: September | October | November.