Mercer Island weather in October 2025
Mon
Tue
Wed
Thu
Fri
Sat
Sun
29 September
+20°+11°
30 September
+19°+11°
1 October
+18°+11°
2 October
+18°+11°
3 October
+18°+10°
4 October
+18°+10°
5 October
+19°+9°
6 October
+19°+9°
7 October
+19°+11°
8 October
+18°+11°
9 October
+17°+11°
10 October
+16°+10°
11 October
+15°+9°
12 October
+16°+9°
13 October
+16°+10°
14 October
+17°+9°
15 October
+16°+9°
16 October
+16°+9°
17 October
+16°+9°
18 October
+16°+9°
19 October
+17°+10°
20 October
+16°+10°
21 October
+15°+9°
22 October
+14°+9°
23 October
+14°+8°
24 October
+14°+9°
25 October
+14°+8°
26 October
+13°+8°
27 October
+14°+8°
28 October
+14°+9°
29 October
+15°+9°
30 October
+14°+8°
31 October
+14°+9°
1 November
+13°+9°
2 November
+14°+9°
Forecast in other regions
New York
+29°
Los Angeles
+27°
Chicago
+26°
Houston
+33°
Queens
+29°
Phoenix
+38°
Philadelphia
+28°
San Antonio
+34°
San Diego
+27°
The Bronx
+29°
Dallas
+32°
San Jose
+28°
Austin
+33°
Detroit
+25°
Jacksonville
+32°
Fort Worth
+31°
Columbus
+28°
Indianapolis
+27°
Charlotte
+37°
San Francisco
+20°
