Average data for 10 years
1 September
Monday
+17°
+16°
2 September
Tuesday
+18°
+16°
3 September
Wednesday
+17°
+16°
4 September
Thursday
+18°
+16°
5 September
Friday
+17°
+16°
6 September
Saturday
+17°
+17°
7 September
Sunday
+18°
+17°
8 September
Monday
+18°
+16°
9 September
Tuesday
+17°
+17°
10 September
Wednesday
+18°
+17°
11 September
Thursday
+17°
+16°
12 September
Friday
+17°
+16°
13 September
Saturday
+17°
+16°
14 September
Sunday
+17°
+16°
15 September
Monday
+17°
+15°
16 September
Tuesday
+17°
+16°
17 September
Wednesday
+18°
+15°
18 September
Thursday
+16°
+15°
19 September
Friday
+16°
+14°
20 September
Saturday
+16°
+15°
21 September
Sunday
+17°
+16°
22 September
Monday
+17°
+15°
23 September
Tuesday
+16°
+15°
24 September
Wednesday
+17°
+15°
25 September
Thursday
+16°
+15°
26 September
Friday
+15°
+15°
27 September
Saturday
+15°
+14°
28 September
Sunday
+15°
+14°
29 September
Monday
+15°
+14°
30 September
Tuesday
+15°
+14°
Cities near you
Canada
Vancouver
United States
Seattle
United States
Portland
Canada
Victoria
United States
Salem
Cities with similar weather in September
Australia
Sydney
United States
San Francisco
Kazakhstan
Balkhash
Canada
Montreal
Belgium
Bruges
In September, the weather in Friday Harbor is typically warm. Average daily high temperature in September is about 17 degrees above zero. On average, Friday Harbor has 14 sunny, 10 partly cloudy, and 6 rainy days in September. The rains are usually moderate.