Current Conditions

Mercer Island, Washington

65°F19°C

Partly Cloudy

Wind

N 5 mph8 km/h

Humidity

68%

Cloud Cover

As of Tuesday, September 8, 2026 at 9:24 PM PDT

Today's Outlook

Night

Mostly cloudy, with a low around 52°F11°C. Light wind from the NE around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 76°F25°C	Low 52°F11°C	Precip 0 in0 mm—	Cloud 69%	Wind NNE 4 mph6 km/h	Wednesday: Mostly cloudy and warm, with a high of 76°F25°C and morning low of 55°F13°C. Light wind from the N around 4 mph7 km/h. Wednesday Night: Mostly cloudy, with a low around 52°F11°C. Light wind from the NE around 3 mph5 km/h.
Drizzle	High 69°F21°C	Low 58°F15°C	Precip 0.02 in0.6 mm25%	Cloud 81%	Wind SW 3 mph5 km/h	Thursday: Overcast and warm, with a high of 69°F21°C and morning low of 60°F16°C. Light wind from the W around 3 mph5 km/h. 25% chance of drizzle in the afternoon. Thursday Night: Mostly cloudy, with a low around 58°F15°C. Light wind from the S around 3 mph5 km/h. 12% chance of drizzle in the evening.
Drizzle	High 67°F19°C	Low 55°F13°C	Precip 0.01 in0.3 mm12%	Cloud 90%	Wind SSW 5 mph7 km/h	Friday: Overcast and mild, with a high of 67°F19°C and morning low of 57°F14°C. Light wind from the SSW around 5 mph8 km/h. Dry air. Friday Night: Overcast, with a low around 55°F13°C. Light wind from the S around 4 mph7 km/h. 12% chance of drizzle overnight.
Light Rain	High 64°F18°C	Low 55°F13°C	Precip 0.18 in4.5 mm53%	Cloud 80%	Wind SSW 4 mph6 km/h	Saturday: Mostly cloudy and mild, with a high of 64°F18°C and morning low of 57°F14°C. Light wind from the WSW around 4 mph6 km/h. 52% chance of light rain throughout the day. Saturday Night: Overcast, with a low around 55°F13°C. Light wind from the S around 4 mph6 km/h. 53% chance of light rain in the evening.
Light Rain	High 65°F18°C	Low 56°F13°C	Precip 0.24 in6.2 mm72%	Cloud 75%	Wind SSW 7 mph11 km/h	Sunday: Overcast and mild, with a high of 65°F18°C and morning low of 57°F14°C. Breezy from the SSW at 7 to 8 mph12 to 12 km/h. 72% chance of light rain throughout the day. Sunday Night: Mostly cloudy, with a low around 56°F13°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 66% chance of showers throughout the night.
Drizzle	High 67°F19°C	Low 56°F13°C	Precip 0.04 in0.9 mm16%	Cloud 61%	Wind SSW 5 mph8 km/h	Monday: Mostly cloudy and mild, with a high of 67°F19°C and morning low of 57°F14°C. Light wind from the SSW around 5 mph8 km/h. 16% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 56°F13°C. Light wind from the S around 5 mph8 km/h. 13% chance of drizzle overnight.
Drizzle	High 67°F20°C	Low 54°F12°C	Precip 0.07 in1.7 mm21%	Cloud 43%	Wind N 4 mph7 km/h	Tuesday: Partly cloudy and mild, with a high of 67°F20°C and morning low of 56°F13°C. Light wind from the NNW around 5 mph8 km/h. 21% chance of drizzle throughout the day. Tuesday Night: Partly cloudy, with a low around 54°F12°C. Light wind from the NNE around 3 mph5 km/h. 17% chance of drizzle throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	76°F25°C	52°F11°C	0 in0 mm· —	69%	Partly Cloudy	NNE 4 mph6 km/h
DayMostly cloudy and warm, with a high of 76°F25°C and morning low of 55°F13°C. Light wind from the N around 4 mph7 km/h. NightMostly cloudy, with a low around 52°F11°C. Light wind from the NE around 3 mph5 km/h.
	ThursdaySep 10	69°F21°C	58°F15°C	0.02 in0.6 mm· 25%	81%	Drizzle	SW 3 mph5 km/h
DayOvercast and warm, with a high of 69°F21°C and morning low of 60°F16°C. Light wind from the W around 3 mph5 km/h. 25% chance of drizzle in the afternoon. NightMostly cloudy, with a low around 58°F15°C. Light wind from the S around 3 mph5 km/h. 12% chance of drizzle in the evening.
	FridaySep 11	67°F19°C	55°F13°C	0.01 in0.3 mm· 12%	90%	Drizzle	SSW 5 mph7 km/h
DayOvercast and mild, with a high of 67°F19°C and morning low of 57°F14°C. Light wind from the SSW around 5 mph8 km/h. Dry air. NightOvercast, with a low around 55°F13°C. Light wind from the S around 4 mph7 km/h. 12% chance of drizzle overnight.
	SaturdaySep 12	64°F18°C	55°F13°C	0.18 in4.5 mm· 53%	80%	Light Rain	SSW 4 mph6 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 57°F14°C. Light wind from the WSW around 4 mph6 km/h. 52% chance of light rain throughout the day. NightOvercast, with a low around 55°F13°C. Light wind from the S around 4 mph6 km/h. 53% chance of light rain in the evening.
	SundaySep 13	65°F18°C	56°F13°C	0.24 in6.2 mm· 72%	75%	Light Rain	SSW 7 mph11 km/h
DayOvercast and mild, with a high of 65°F18°C and morning low of 57°F14°C. Breezy from the SSW at 7 to 8 mph12 to 12 km/h. 72% chance of light rain throughout the day. NightMostly cloudy, with a low around 56°F13°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 66% chance of showers throughout the night.
	MondaySep 14	67°F19°C	56°F13°C	0.04 in0.9 mm· 16%	61%	Drizzle	SSW 5 mph8 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 57°F14°C. Light wind from the SSW around 5 mph8 km/h. 16% chance of drizzle throughout the day. NightMostly cloudy, with a low around 56°F13°C. Light wind from the S around 5 mph8 km/h. 13% chance of drizzle overnight.
	TuesdaySep 15	67°F20°C	54°F12°C	0.07 in1.7 mm· 21%	43%	Drizzle	N 4 mph7 km/h
DayPartly cloudy and mild, with a high of 67°F20°C and morning low of 56°F13°C. Light wind from the NNW around 5 mph8 km/h. 21% chance of drizzle throughout the day. NightPartly cloudy, with a low around 54°F12°C. Light wind from the NNE around 3 mph5 km/h. 17% chance of drizzle throughout the night.
	WednesdaySep 16	71°F22°C	52°F11°C	0.03 in0.7 mm· 10%	22%	Drizzle	N 5 mph7 km/h
DayMostly clear and warm, with a high of 71°F22°C and morning low of 54°F12°C. Breezy from the N at 6 to 7 mph9 to 11 km/h. 10% chance of drizzle. NightMostly clear, with a low around 52°F11°C. Light wind from the NNE around 4 mph6 km/h.
	ThursdaySep 17	75°F24°C	51°F11°C	0 in0.1 mm· 3%	11%	Clear	NNE 4 mph7 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 53°F12°C. Light wind from the N around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 51°F11°C. Light wind from the NE around 4 mph6 km/h.
	FridaySep 18	74°F23°C	52°F11°C	0.01 in0.3 mm· 2%	19%	Clear	NNE 4 mph7 km/h
DayMostly clear and warm, with a high of 74°F23°C and morning low of 55°F13°C. Light wind from the NNW around 5 mph8 km/h. NightMostly clear, with a low around 52°F11°C. Light wind from the ENE around 4 mph6 km/h.
	SaturdaySep 19	72°F22°C	55°F13°C	0.01 in0.3 mm· 5%	36%	Clear	SSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 72°F22°C and morning low of 56°F13°C. Light wind from the WNW around 5 mph8 km/h. NightPartly cloudy, with a low around 55°F13°C. Light wind from the SE around 4 mph7 km/h.
	SundaySep 20	70°F21°C	56°F13°C	0.04 in1 mm· 13%	51%	Drizzle	SSW 4 mph7 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 57°F14°C. Light wind from the WSW around 5 mph8 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 56°F13°C. Light wind from the SSE around 4 mph6 km/h.
	MondaySep 21	68°F20°C	56°F13°C	0.07 in1.7 mm· 21%	57%	Drizzle	SSW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 68°F20°C and morning low of 57°F14°C. Light wind from the SW around 5 mph8 km/h. 21% chance of drizzle throughout the day. NightMostly cloudy, with a low around 56°F13°C. Light wind from the SSE around 4 mph7 km/h. 17% chance of drizzle throughout the night.
	TuesdaySep 22	68°F20°C	56°F13°C	0.08 in2.1 mm· 21%	52%	Drizzle	SSW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 68°F20°C and morning low of 58°F14°C. Light wind from the W around 5 mph8 km/h. 21% chance of drizzle throughout the day. NightPartly cloudy, with a low around 56°F13°C. Light wind from the SSE around 4 mph7 km/h. 18% chance of drizzle throughout the night.
	WednesdaySep 23	69°F20°C	54°F12°C	0.04 in1.1 mm· 17%	52%	Drizzle	SSW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 69°F20°C and morning low of 56°F13°C. Light wind from the W around 5 mph8 km/h. 17% chance of drizzle throughout the day. NightMostly cloudy, with a low around 54°F12°C. Light wind from the SSE around 4 mph7 km/h. 14% chance of drizzle throughout the night.

Nearby Cities

Columbia City3 mi4 km Bellevue3 mi5 km Bryn Mawr-Skyway5 mi9 km West Lake Sammamish6 mi9 km Seattle6 mi9 km Renton6 mi10 km

About This Forecast

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Coordinates: 47.5707°N, 122.2221°W·Elevation: 102m·Timezone: America/Los_Angeles·Population: 25,042