S
M
T
W
T
F
S
26
46°
41°
27
47°
41°
28
53°
43°
29
52°
41°
30
51°
43°
1
49°
43°
2
50°
44°
3
52°
44°
4
60°
41°
5
52°
45°
6
49°
43°
7
52°
42°
8
56°
44°
9
52°
48°
10
49°
45°
11
51°
43°
12
58°
43°
13
51°
47°
14
52°
43°
15
51°
40°
16
55°
44°
17
52°
43°
18
50°
45°
19
51°
44°
20
50°
46°
21
51°
45°
22
49°
44°
23
48°
41°
24
52°
44°
25
58°
45°
26
51°
45°
27
52°
44°
28
54°
45°
29
51°
46°
30
53°
45°
31
55°
44°
1
56°
48°
2
60°
50°
3
62°
49°
4
60°
50°
5
62°
54°
6
54°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sitka
Sitka's May 2026 forecast shows daily high temperatures ranging from 48° to 62°, with overnight lows between 41° and 54°. The average high for May is 55° with an average low of 46°. 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 Sitka. See also: June | July | August.