 |
 Current Mercer Island Weather Conditions |
Updated July 14th at 2:53 am |
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| Temperature: | 63°F |
Dew Point: | 48°F |
| Barometer: | 30.06 inHg |
Wind: | N 17 Mph |
| Humidity: | 59.2% |
Visibility: | 0M |
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| Mercer Island Weather Forecast Summary |
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Today
Jul 14th
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Wednesday
Jul 15th
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Thursday
Jul 16th
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Friday
Jul 17th
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Saturday
Jul 18th
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Sunny |
Mostly Sunny |
Sunny |
Sunny |
Mostly Sunny |
85°F
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87°F
60°F |
85°F
55°F |
81°F
56°F |
74°F
51°F |
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| Mercer Island Detailed Weather Forecast |
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| Tuesday, July 14th, 2026 |
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Overnight |
Temperature: 51°F |
| Clear. |
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Morning |
Temperature: 69°F |
| Sunny. |
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Afternoon |
Temperature: 84°F |
| Sunny. |
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Evening |
Temperature: 65°F |
| Clear. |
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| Wednesday, July 15th, 2026 |
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Overnight |
Temperature: 60°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 71°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 86°F |
| Sunny. |
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Evening |
Temperature: 67°F |
| Clear. |
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| Thursday, July 16th, 2026 |
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Overnight |
Temperature: 56°F |
| Mostly clear. |
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Morning |
Temperature: 73°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 85°F |
| Sunny. |
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Evening |
Temperature: 65°F |
| Clear. |
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| Friday, July 17th, 2026 |
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Overnight |
Temperature: 56°F |
| Clear with a slight chance of showers. |
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Morning |
Temperature: 64°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 80°F |
| Sunny. |
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Evening |
Temperature: 63°F |
| Clear. |
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| Saturday, July 18th, 2026 |
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Overnight |
Temperature: 51°F |
| Clear. |
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Morning |
Temperature: 61°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 73°F |
| Sunny. |
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Evening |
Temperature: 60°F |
| Clear. |
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| Sunday, July 19th, 2026 |
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Overnight |
Temperature: 50°F |
| Clear. |
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Morning |
Temperature: 63°F |
| Sunny. |
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Afternoon |
Temperature: 78°F |
| Sunny. |
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Evening |
Temperature: 62°F |
| Mostly clear. |
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| Monday, July 20th, 2026 |
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Overnight |
Temperature: 52°F |
| Clear. |
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Morning |
Temperature: 69°F |
| Sunny. |
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Afternoon |
Temperature: 85°F |
| Sunny. |
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Evening |
Temperature: 67°F |
| Clear. |
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| Tuesday, July 21st, 2026 |
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Overnight |
Temperature: 60°F |
| Clear. |
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Morning |
Temperature: 76°F |
| Sunny. |
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Afternoon |
Temperature: 92°F |
| Sunny. Slight chance of a thunderstorm. |
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Evening |
Temperature: 73°F |
| Clear. |
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| Wednesday, July 22nd, 2026 |
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Overnight |
Temperature: 64°F |
| Clear. |
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Morning |
Temperature: 80°F |
| Sunny. |
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Afternoon |
Temperature: 95°F |
| Mostly sunny. Slight chance of a thunderstorm. |
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Evening |
Temperature: 74°F |
| Clear. Slight chance of a thunderstorm. |
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