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As of 12:25 PDT

Weather in Mercer Island, WA

74°Current weather

Mercer Island, Sunday, 9 August, 12:25

Partly cloudy. Feels like 74°. High 76°, low 56°.

Pressure30.06 inHg
Wind4 mph W
Humidity59%
Visibility6.2 mi
Dew point58°

10-day forecast for Mercer Island, WA: 53° to 88°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

88°
Best day: Friday, August 14
67° · 0.04 in
Worst day: Tuesday, August 18

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1078° / 53°0Overcast
MorningClear58°feels 57°
AfternoonOvercast76°feels 75°
EveningMostly clear72°feels 71°
OvernightClear59°feels 58°
78 °Overcast

Mercer Island, Monday, 10 August

Overcast. High 78°, low 53°.

Pressure30.06 inHg
Wind3 mph SW
Humidity42%
Visibility6.2 mi
Dew point51°
Tue, 1184° / 54°0Clear
MorningClear62°feels 61°
AfternoonClear83°feels 81°
EveningClear71°feels 70°
OvernightClear60°feels 59°
84 °Clear

Mercer Island, Tuesday, 11 August

Clear. High 84°, low 54°.

Pressure30.09 inHg
Wind1 mph W
Humidity37%
Visibility6.2 mi
Dew point50°
Wed, 1279° / 58°0Overcast
MorningOvercast63°feels 63°
AfternoonOvercast78°feels 78°
EveningClear71°feels 70°
OvernightOvercast61°feels 60°
79 °Overcast

Mercer Island, Wednesday, 12 August

Overcast. High 79°, low 58°.

Pressure30.03 inHg
Wind3.3 mph SW
Humidity58%
Visibility6.2 mi
Dew point55°
Thu, 1383° / 58°0Clear
MorningClear64°feels 63°
AfternoonClear81°feels 80°
EveningClear72°feels 71°
OvernightClear60°feels 60°
83 °Clear

Mercer Island, Thursday, 13 August

Clear. High 83°, low 58°.

Pressure29.88 inHg
Wind5.3 mph N
Humidity42%
Visibility6.2 mi
Dew point54°
Fri, 1488° / 60°0Clear
MorningClear72°feels 71°
AfternoonClear85°feels 83°
EveningClear72°feels 71°
OvernightClear66°feels 65°
88 °Clear

Mercer Island, Friday, 14 August

Clear. High 88°, low 60°.

Pressure29.88 inHg
Wind9.8 mph N
Humidity26%
Visibility—
Dew point46°
Sat, 1584° / 59°0Overcast
MorningOvercast67°feels 67°
AfternoonOvercast80°feels 79°
EveningOvercast71°feels 70°
OvernightOvercast63°feels 62°
84 °Overcast

Mercer Island, Saturday, 15 August

Overcast. High 84°, low 59°.

Pressure29.97 inHg
Wind6.3 mph W
Humidity38%
Visibility—
Dew point50°
Sun, 1676° / 56°0Overcast
MorningOvercast63°feels 63°
AfternoonOvercast71°feels 71°
EveningOvercast67°feels 66°
OvernightOvercast62°feels 61°
76 °Overcast

Mercer Island, Sunday, 16 August

Overcast. High 76°, low 56°.

Pressure30.09 inHg
Wind6.8 mph S
Humidity54%
Visibility—
Dew point53°
Mon, 1780° / 57°0.01Light rain
MorningLight rain65°feels 64°
AfternoonLight rain77°feels 76°
EveningLight rain71°feels 70°
OvernightLight rain63°feels 63°
80 °Light rain

Mercer Island, Monday, 17 August

Light rain. High 80°, low 57°.

Pressure30.00 inHg
Wind5.6 mph SW
Humidity36%
Visibility—
Dew point47°
Tue, 1867° / 61°0.04Light rain
MorningLight rain64°feels 64°
AfternoonLight rain66°feels 66°
EveningLight rain64°feels 64°
OvernightLight rain64°feels 64°
67 °Light rain

Mercer Island, Tuesday, 18 August

Light rain. High 67°, low 61°.

Pressure30.03 inHg
Wind6.4 mph S
Humidity75%
Visibility—
Dew point58°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Mercer Island, WA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.