Daily forecast
as
Last update: 03:36 local time / This forecast is based on the GFS model
Tuesday, Sep 16
Wind
Weather
02h
5 kts
max 7 kts
10° C
909 hpa
05h
7 kts
max 10 kts
10° C
908 hpa
08h
7 kts
max 12 kts
12° C
907 hpa
11h
8 kts
max 15 kts
22° C
907 hpa
14h
8 kts
max 14 kts
25° C
906 hpa
17h
6 kts
max 12 kts
24° C
905 hpa
20h
7 kts
max 10 kts
16° C
906 hpa
23h
7 kts
max 10 kts
13° C
907 hpa
Wednesday, Sep 17
Wind
Weather
02h
6 kts
max 8 kts
12° C
907 hpa
05h
5 kts
max 5 kts
11° C
907 hpa
08h
3 kts
max 4 kts
13° C
908 hpa
11h
4 kts
max 4 kts
19° C
909 hpa
14h
5 kts
max 5 kts
22° C
908 hpa
17h
4 kts
max 4 kts
21° C
907 hpa
20h
2 kts
max 2 kts
11° C
907 hpa
23h
0 kts
max 0 kts
8° C
908 hpa
Thursday, Sep 18
Wind
Weather
02h
1 kts
max 1 kts
7° C
908 hpa
05h
2 kts
max 2 kts
7° C
907 hpa
08h
0 kts
max 1 kts
8° C
907 hpa
11h
4 kts
max 4 kts
13° C
907 hpa
14h
5 kts
max 5 kts
16° C
906 hpa
17h
4 kts
max 4 kts
16° C
905 hpa
20h
2 kts
max 2 kts
9° C
905 hpa
23h
3 kts
max 3 kts
8° C
905 hpa
Friday, Sep 19
Wind
Weather
02h
3 kts
max 3 kts
6° C
905 hpa
05h
3 kts
max 3 kts
6° C
905 hpa
08h
2 kts
max 2 kts
8° C
905 hpa
11h
4 kts
max 4 kts
14° C
905 hpa
14h
5 kts
max 5 kts
17° C
904 hpa
17h
3 kts
max 4 kts
17° C
904 hpa
20h
3 kts
max 3 kts
10° C
904 hpa
23h
3 kts
max 3 kts
8° C
905 hpa
Saturday, Sep 20
Wind
Weather
02h
3 kts
max 3 kts
7° C
905 hpa
05h
3 kts
max 3 kts
6° C
905 hpa
08h
1 kts
max 2 kts
8° C
905 hpa
11h
2 kts
max 4 kts
12° C
905 hpa
14h
2 kts
max 7 kts
12° C
905 hpa
17h
2 kts
max 3 kts
10° C
904 hpa
20h
3 kts
max 4 kts
1.28 mm
9° C
904 hpa
23h
4 kts
max 15 kts
4.65 mm
9° C
904 hpa
Sunday, Sep 21
Wind
Weather
02h
5 kts
max 19 kts
4.3 mm
10° C
904 hpa
05h
4 kts
max 16 kts
2.18 mm
10° C
905 hpa
08h
4 kts
max 11 kts
1.23 mm
9° C
906 hpa
11h
3 kts
max 9 kts
0.58 mm
10° C
908 hpa
14h
2 kts
max 3 kts
0.81 mm
10° C
908 hpa
17h
4 kts
max 6 kts
12° C
908 hpa
20h
2 kts
max 2 kts
8° C
908 hpa
23h
2 kts
max 2 kts
8° C
910 hpa
Monday, Sep 22
Wind
Weather
02h
3 kts
max 3 kts
6° C
910 hpa
05h
3 kts
max 3 kts
5° C
909 hpa
08h
2 kts
max 3 kts
7° C
909 hpa
11h
3 kts
max 3 kts
15° C
909 hpa
14h
3 kts
max 3 kts
18° C
907 hpa
17h
3 kts
max 3 kts
18° C
905 hpa
20h
4 kts
max 4 kts
10° C
904 hpa
23h
4 kts
max 4 kts
9° C
904 hpa
Tuesday, Sep 23
Wind
Weather
02h
4 kts
max 4 kts
9° C
902 hpa
05h
4 kts
max 4 kts
9° C
900 hpa
08h
4 kts
max 5 kts
10° C
899 hpa
11h
3 kts
max 4 kts
18° C
898 hpa
14h
5 kts
max 9 kts
19° C
899 hpa
17h
5 kts
max 6 kts
13° C
900 hpa
20h
3 kts
max 4 kts
2.16 mm
9° C
900 hpa
23h
3 kts
max 5 kts
3.17 mm
8° C
902 hpa
Wednesday, Sep 24
Wind
Weather
02h
2 kts
max 3 kts
0.5 mm
8° C
902 hpa
05h
2 kts
max 3 kts
0.43 mm
7° C
903 hpa
08h
2 kts
max 4 kts
7° C
903 hpa
11h
3 kts
max 5 kts
11° C
903 hpa
14h
4 kts
max 7 kts
13° C
902 hpa
17h
2 kts
max 6 kts
13° C
901 hpa
20h
4 kts
max 5 kts
9° C
901 hpa
23h
6 kts
max 8 kts
8° C
900 hpa
Thursday, Sep 25
Wind
Weather
02h
6 kts
max 8 kts
10° C
898 hpa
05h
4 kts
max 7 kts
3.17 mm
7° C
897 hpa
08h
3 kts
max 6 kts
7.98 mm
7° C
898 hpa
11h
5 kts
max 15 kts
3.62 mm
10° C
899 hpa
14h
6 kts
max 17 kts
2.7 mm
11° C
899 hpa
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Additional information
General
This is the wind, wave and weather forecast for Mt. Si in Washington, United States of America. Windfinder specializes in wind, waves, tides and weather reports & forecasts for wind related sports like kitesurfing, windsurfing, surfing, sailing, fishing or paragliding.
Forecast
This forecast is based on the GFS model. Forecasts are available worldwide. The horizontal resolution is about 13 km. Forecasts are computed 4 times a day, at about 10:00 PM, 4:00 AM, 10:00 AM and 4:00 PM Pacific Daylight Time. Predictions are available in time steps of 3 hours for up to 10 days into the future. The arrows point in the direction in which the wind is blowing.Check the wind forecast for Mt. Si when you search for the best travel destinations for your kiteboarding, windsurfing or sailing vacations in United States of America. Or use our wind forecast to find the wind speed today in Mt. Si or to have a look at the wind direction tomorrow at Mt. Si.
Severe Weather Warnings
When a severe weather warning or advisory is provided by the local meteorological institute, we display it as a banner above the wind forecast.The weather warning, for example a high wind warning, can help you prepare for dangerous weather conditions and avoid weather-related risks. The color scale indicates the intensity of the predicted weather event. For more details click or tap on the warning. General information about severe weather warnings can be found in our help section.
Please be aware that severe weather may occur without a prior severe weather warning being reported.
Units
We use knots and degrees Celsius as our default units. These units are often used by sailors, kiters, surfers, windsurfers and paragliders. Use website settings to switch between units and 7 different languages at any time. For converting between wind speed units such as knots, km/h (kilometers per hour), m/s (meters per second), and mph (miles per hour) use our wind speed calculator.