S
M
T
W
T
F
S
26
58°
46°
27
70°
45°
28
63°
50°
29
62°
54°
30
70°
49°
1
67°
44°
2
63°
49°
3
64°
44°
4
77°
51°
5
86°
61°
6
71°
59°
7
63°
51°
8
74°
48°
9
76°
59°
10
82°
55°
11
64°
49°
12
71°
46°
13
77°
57°
14
63°
52°
15
73°
52°
16
85°
54°
17
89°
64°
18
93°
67°
19
97°
72°
20
96°
71°
21
71°
58°
22
60°
52°
23
55°
53°
24
68°
62°
25
75°
64°
26
72°
65°
27
76°
65°
28
81°
59°
29
80°
56°
30
75°
50°
31
72°
55°
1
76°
58°
2
78°
60°
3
80°
61°
4
78°
59°
5
82°
60°
6
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rosslyn
Rosslyn's May 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 50° and 65°. The average high for May is 75° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Rosslyn. See also: June | July | August.
