Mercer Island Weather Conditions
Current Temperature Level
26 °C

56 AQI
Air quality index is: Moderate
Last Updated: 2025-08-24 22:30 (Local Time)
Mercer Island
Mercer Island Weather Parameters
6 km/h
3 m/s
358° N
0 %
16 km
0 mm
1012 mb
UV Index0
Suggestions for
MondayMercer Island25 Aug.
Mercer Island 10-Days Weather Forecast
Cloudy
Mostly cloudy skies with a high of 25 °C. Humidity at 58% and winds around 10.8 km/h.31°C / 18°C
Sunrise
06:19 AM13hrs 43min
Sunset
08:02 PMTemp23 °C
ConditionClear
Humidity59 %
Feels24.9 °C
Cover6 %
Visibility10 km
Wind Speed & Dir.4.7 kmph / N
UV0
Mercer Island 30-Days (August 2025) Weather Forecast
Sun.
Mon.
Tue.
Wed.
Thu.
Fri.
Sat.
1Fri.
27°17 °C
2Sat.
21°16 °C
3Sun.
20°16 °C
4Mon.
21°16 °C
5Tue.
24°16 °C
6Wed.
23°16 °C
7Thu.
24°14 °C
8Fri.
27°14 °C
9Sat.
29°15 °C
10Sun.
28°17 °C
11Mon.
27°18 °C
12Tue.
34°21 °C
13Wed.
22°17 °C
14Thu.
23°17 °C
15Fri.
21°15 °C
16Sat.
25°16 °C
17Sun.
27°17 °C
18Mon.
26°16 °C
19Tue.
26°17 °C
20Wed.
24°16 °C
21Thu.
26°13 °C
22Fri.
31°16 °C
23Sat.
32°18 °C
24Today
34°19 °C
25Mon.
30°18 °C
26Tue.
33°18 °C
27Wed.
27°19 °C
28Thu.
28°15 °C
29Fri.
27°14 °C
30Sat.
28°14 °C
31Sun.
28°13 °C
AugustWeather Overview
No. of days:
Sunny
14
Cloudy
5
Rainy
4
Snowy
0
The monthly weather averages in Mercer Island consist of 14 sunny days, 5 cloudy days, 4 rainy days, and 0 snowy days.
Mercer Island's Locations Weather Conditions
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5.

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24.8 kmph / NNW
6.

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Partly cloudy
26%
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34.9 kmph / NW
7.

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26%
0
33.8 kmph / NW
8.

Tolleson, United States
Partly cloudy
26%
0
33.8 kmph / NW
9.

Fountain Hills, United States
Clear
23%
0
24.8 kmph / NNW
10.

Phoenix, United States
Partly cloudy
26%
0
33.8 kmph / NW
Last Updated: 25 Aug 2025, 05:59 AM
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