
5-day weather forecast for Mercer Island, Washington
Today
37°
44°
Slight Chance Rain
Tomorrow
32°
44°
Chance Rain/Snow
Wednesday
35°
43°
Chance Rain/Snow
Thursday
34°
45°
Chance Rain
Friday
35°
44°
Rain Likely
Click on a forecast to see the forecast trend for that day
Weather changeability for Seattle, Washington
Temperature | Last Month | Last Year |
---|---|---|
Average change in high temperature day-to-day | 3.0° | 3.9° |
Average change in low temperature day-to-day | 5.3° | 4.0° |
Precipitation | Last Month | Last Year |
---|---|---|
Chance of dry day after a precip day | 45% | 50% |
Chance of precip day after a dry day | 36% | 19% |
Weather forecast accuracy for Seattle, Washington
The Weather Channel | 81.72% |
AccuWeather | 81.45% |
Weather Underground | 80.65% |
Foreca | 80.11% |
AerisWeather | 77.15% |
NWS Digital Forecast | 76.08% |
Wetter | 72.31% |
Open Weathermap | 70.70% |
World Weather Online | 70.16% |
Persistence | 50.00% |
Weather News | 47.58% |
The Weather Channel | 86.76% |
Weather Underground | 86.57% |
AccuWeather | 84.09% |
Foreca | 83.09% |
NWS Digital Forecast | 78.62% |
AerisWeather | 78.53% |
Wetter | 77.92% |
Open Weathermap | 74.19% |
World Weather Online | 70.44% |
Persistence | 54.87% |
Weather News | 52.99% |
ForecastAdvisor Fact
On average, Persistence's high temperature forecasts for Seattle were off by 4.87 degrees last year.