For Tuesday the predicted weather in Mercer Island is partly cloudy. The maximum temperature is a mild 16°C (61°F), while the minimum temperature is a cold 8°C (46°F).

Tomorrow's weather - Wednesday 14 Oct

On Wednesday, Mercer Island will be mostly sunny with some rain during the morning. High temperatures will reach a pleasant 18°C (64°F), with lows dropping to around 12°C (54°F).

10-Day Weather Forecast

Over the next 10 days, temperatures in Mercer Island will be will reach 22°C (72°F) on Friday before declining again, with average daytime highs of 16°C (61°F) and nighttime lows of 10°C (50°F) over this period. Compared to typical October conditions, these temperatures are typical. There will be plenty of sunshine during this period. Precipitation levels will be less than usual (versus normal October rainfall), with mostly dry conditions. There will be rain on around 2 days (Sat, Mon). The wind will be generally calm during this period.

Weather Forecast FAQ for Mercer Island

When will be the warmest day next week?

The warmest day is expected to be Friday with a high of 22°C (72°F).

When will be the coldest day?

The coldest day is forecasted for Sunday with a low of 7°C (45°F).

Will it rain next week in Mercer Island?

Yes, rain is expected on 2 days , specifically on Sat, Mon.

How much rainfall is expected next week?

A total of 9 mm (0.4 in) of rain is forecasted for the 10-day period.

What will be the temperature range next week?

Temperatures will range from 7°C (45°F) to 22°C (72°F).

More about Mercer Island

Explore the full Mercer Island climate overview with monthly averages, or check rainfall data and temperature by month.

Mercer Island weather by month

Browse monthly averages for Mercer Island: climate by month with temperature, rainfall and sunshine.

January February March April May June July August September October November December

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