S
M
T
W
T
F
S
26
57°
45°
27
47°
36°
28
46°
36°
29
47°
37°
30
48°
37°
1
48°
38°
2
50°
37°
3
47°
37°
4
47°
38°
5
49°
38°
6
54°
41°
7
51°
42°
8
50°
41°
9
52°
42°
10
55°
41°
11
53°
40°
12
51°
41°
13
50°
42°
14
49°
40°
15
49°
40°
16
50°
42°
17
49°
41°
18
49°
42°
19
50°
42°
20
50°
43°
21
51°
41°
22
50°
41°
23
51°
42°
24
50°
42°
25
53°
46°
26
52°
43°
27
52°
43°
28
54°
47°
29
56°
48°
30
58°
45°
31
53°
43°
1
53°
45°
2
54°
44°
3
53°
46°
4
56°
50°
5
59°
51°
6
60°
50°
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 46° to 60°, with overnight lows between 36° and 51°. The average high for May is 52° with an average low of 42°. 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.