Average data for 10 years
1 August
Friday
+18°
+15°
2 August
Saturday
+19°
+15°
3 August
Sunday
+18°
+15°
4 August
Monday
+19°
+15°
5 August
Tuesday
+17°
+14°
6 August
Wednesday
+17°
+14°
7 August
Thursday
+17°
+14°
8 August
Friday
+17°
+14°
9 August
Saturday
+16°
+14°
10 August
Sunday
+15°
+14°
11 August
Monday
+16°
+14°
12 August
Tuesday
+17°
+14°
13 August
Wednesday
+17°
+15°
14 August
Thursday
+16°
+14°
15 August
Friday
+16°
+14°
16 August
Saturday
+16°
+14°
17 August
Sunday
+16°
+14°
18 August
Monday
+16°
+14°
19 August
Tuesday
+16°
+13°
20 August
Wednesday
+15°
+13°
21 August
Thursday
+15°
+13°
22 August
Friday
+14°
+13°
23 August
Saturday
+14°
+13°
24 August
Sunday
+14°
+13°
25 August
Monday
+16°
+14°
26 August
Tuesday
+15°
+13°
27 August
Wednesday
+15°
+13°
28 August
Thursday
+15°
+13°
29 August
Friday
+14°
+12°
30 August
Saturday
+14°
+12°
31 August
Sunday
+15°
+13°
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August in Ketchikan is the warmest month of the year. In August, the weather in Ketchikan is typically warm. Average daily high temperature in August is about 16 degrees above zero. On average, Ketchikan has 24 rainy, 4 sunny, and 3 cloudy days in August. The rains are usually heavy. August as well as January, February, March, and April is considered the most uncomfortable time to visit Ketchikan.