14 days forecast Mercer Island
See the weather for the coming 14 days in Mercer Island.
Saturday, May 16 
50%
8° / 13°
3
50%Sun, but also an occasional shower
Total precipitation 4.9 mm
Precipitation chance 85%
UV index 5
Sunday, May 17 
55%
7° / 17°
2
55%Regular sun, also clouds
Total precipitation 0 mm
Precipitation chance 5%
UV index 4
Monday, May 18 
85%
9° / 20°
2
85%Lots of sun, also cirrus clouds
Total precipitation 0.2 mm
Precipitation chance 5%
UV index 5
Tuesday, May 19 
50%
12° / 19°
2
50%Sun and chance of a shower
Total precipitation 1.1 mm
Precipitation chance 40%
UV index 4
Wednesday, May 20 85%
10° / 21°
2
85%Lots of sun, also cirrus clouds
Total precipitation 0.1 mm
Precipitation chance 0%
UV index 6
Thursday, May 21 
70%
11° / 20°
2
70%Lots of sun, few clouds
Total precipitation 0.6 mm
Precipitation chance 20%
UV index 5
Friday, May 22 75%
11° / 20°
2
75%Lots of sun, few clouds
Total precipitation 0.6 mm
Precipitation chance 20%
UV index 5
Saturday, May 23 60%
10° / 20°
2
60%Regular sun, also clouds
Total precipitation 0.7 mm
Precipitation chance 25%
UV index 4
Sunday, May 24 65%
11° / 19°
3
65%Sun and chance of a shower
Total precipitation 2.2 mm
Precipitation chance 70%
UV index 4
Monday, May 25 70%
11° / 19°
3
70%Sun and chance of a shower
Total precipitation 1.3 mm
Precipitation chance 45%
UV index 4
Tuesday, May 26 75%
11° / 19°
2
75%Sun and chance of a shower
Total precipitation 1.3 mm
Precipitation chance 45%
UV index 5
Wednesday, May 27 75%
11° / 20°
3
75%Lots of sun, few clouds
Total precipitation 0.9 mm
Precipitation chance 30%
UV index 4
Thursday, May 28 65%
12° / 20°
3
65%Lots of sun, few clouds
Total precipitation 1 mm
Precipitation chance 30%
UV index 4
Friday, May 29 75%
12° / 21°
2
75%Sun and chance of a shower
Total precipitation 1.6 mm
Precipitation chance 55%
UV index 5