Daily Superforecast
asLast update: 01:37 local time
Saturday, Dec 28
Wind
Weather
138°
SE
00h
10 kts
max 17 kts
1.73 mm
2° C
-1
83%
889 hpa
150°
SSE
01h
10 kts
max 26 kts
0.67 mm
2° C
-1
80%
889 hpa
184°
S
02h
8 kts
max 26 kts
1.05 mm
2° C
-1
91%
891 hpa
200°
SSW
03h
7 kts
max 21 kts
0.28 mm
3° C
0
89%
890 hpa
202°
SSW
04h
9 kts
max 25 kts
0.83 mm
3° C
-1
95%
891 hpa
214°
SW
05h
9 kts
max 27 kts
1.46 mm
3° C
-1
94%
891 hpa
210°
SSW
06h
9 kts
max 28 kts
2.06 mm
2° C
-1
96%
892 hpa
220°
SW
07h
11 kts
max 31 kts
2.75 mm
3° C
-1
95%
892 hpa
222°
SW
08h
12 kts
max 32 kts
2.57 mm
3° C
-1
95%
892 hpa
223°
SW
09h
12 kts
max 32 kts
4.7 mm
3° C
-1
95%
893 hpa
230°
SW
10h
12 kts
max 29 kts
2.69 mm
3° C
-1
96%
895 hpa
229°
SW
11h
11 kts
max 28 kts
1.38 mm
3° C
0
97%
896 hpa
227°
SW
12h
11 kts
max 27 kts
1.08 mm
3° C
0
96%
896 hpa
232°
SW
13h
8 kts
max 25 kts
1.46 mm
3° C
1
98%
896 hpa
234°
SW
14h
12 kts
max 27 kts
1.35 mm
3° C
0
95%
898 hpa
232°
SW
15h
10 kts
max 24 kts
0.34 mm
3° C
0
96%
898 hpa
221°
SW
16h
11 kts
max 27 kts
0.62 mm
3° C
-1
95%
899 hpa
231°
SW
17h
12 kts
max 28 kts
0.83 mm
2° C
-2
95%
900 hpa
241°
WSW
18h
8 kts
max 22 kts
0.48 mm
2° C
-1
96%
901 hpa
228°
SW
19h
7 kts
max 20 kts
0.17 mm
2° C
-1
94%
900 hpa
231°
SW
20h
6 kts
max 20 kts
2° C
-1
92%
900 hpa
200°
SSW
21h
5 kts
max 17 kts
2° C
0
93%
900 hpa
202°
SSW
22h
5 kts
max 17 kts
0.06 mm
2° C
-1
93%
900 hpa
181°
S
23h
4 kts
max 15 kts
2° C
0
88%
900 hpa
Sunday, Dec 29
Wind
Weather
127°
SE
00h
6 kts
max 7 kts
2° C
-1
84%
899 hpa
136°
SE
01h
6 kts
max 10 kts
2° C
0
79%
898 hpa
128°
SE
02h
8 kts
max 15 kts
2° C
-1
74%
897 hpa
116°
ESE
03h
8 kts
max 19 kts
2° C
-2
73%
895 hpa
122°
ESE
04h
8 kts
max 23 kts
2° C
-1
70%
894 hpa
120°
ESE
05h
12 kts
max 29 kts
2° C
-2
67%
892 hpa
124°
SE
06h
14 kts
max 34 kts
2° C
-2
66%
890 hpa
121°
ESE
07h
12 kts
max 33 kts
2° C
-2
67%
889 hpa
101°
E
08h
5 kts
max 23 kts
3° C
0
65%
888 hpa
70°
ENE
09h
2 kts
max 8 kts
0.06 mm
2° C
1
69%
889 hpa
116°
ESE
10h
1 kts
max 2 kts
0.96 mm
0° C
0
90%
890 hpa
178°
S
11h
1 kts
max 2 kts
1.44 mm
0° C
0
95%
890 hpa
186°
S
12h
3 kts
max 6 kts
1.89 mm
0° C
-1
95%
891 hpa
183°
S
13h
4 kts
max 18 kts
1.15 mm
0° C
-2
94%
892 hpa
196°
SSW
14h
6 kts
max 20 kts
1.92 mm
-1° C
-4
95%
893 hpa
212°
SSW
15h
8 kts
max 22 kts
1.4 mm
-2° C
-6
95%
894 hpa
221°
SW
16h
7 kts
max 22 kts
0.98 mm
-2° C
-6
96%
895 hpa
216°
SW
17h
4 kts
max 20 kts
1.28 mm
-2° C
-4
97%
896 hpa
238°
WSW
18h
9 kts
max 28 kts
1.52 mm
0° C
-4
97%
897 hpa
244°
WSW
19h
14 kts
max 31 kts
1.95 mm
0° C
-5
95%
899 hpa
239°
WSW
20h
14 kts
max 31 kts
1.48 mm
0° C
-6
95%
900 hpa
249°
WSW
21h
12 kts
max 28 kts
0.54 mm
0° C
-5
95%
902 hpa
239°
WSW
22h
10 kts
max 23 kts
0° C
-5
94%
904 hpa
231°
SW
23h
9 kts
max 22 kts
-1° C
-5
95%
905 hpa
Monday, Dec 30
Wind
Weather
233°
SW
00h
7 kts
max 19 kts
-1° C
-4
96%
906 hpa
230°
SW
01h
5 kts
max 20 kts
0.12 mm
-1° C
-4
97%
907 hpa
217°
SW
02h
4 kts
max 19 kts
0.14 mm
-1° C
-3
96%
908 hpa
198°
SSW
03h
4 kts
max 16 kts
0.12 mm
-1° C
-3
93%
908 hpa
197°
SSW
04h
4 kts
max 15 kts
-1° C
-3
93%
909 hpa
210°
SSW
05h
4 kts
max 16 kts
-1° C
-3
89%
909 hpa
196°
SSW
06h
4 kts
max 16 kts
-1° C
-3
94%
910 hpa
193°
SSW
07h
5 kts
max 17 kts
-1° C
-3
96%
910 hpa
229°
SW
08h
6 kts
max 16 kts
-1° C
-4
96%
911 hpa
220°
SW
09h
5 kts
max 14 kts
0.09 mm
-1° C
-4
99%
912 hpa
212°
SSW
10h
6 kts
max 16 kts
0.07 mm
-1° C
-4
97%
913 hpa
231°
SW
11h
5 kts
max 13 kts
0.39 mm
-1° C
-4
96%
901 hpa
230°
SW
12h
5 kts
max 13 kts
0.35 mm
-1° C
-4
94%
901 hpa
229°
SW
13h
5 kts
max 12 kts
0.31 mm
-1° C
-4
93%
901 hpa
227°
SW
14h
5 kts
max 12 kts
0.22 mm
-1° C
-4
92%
901 hpa
226°
SW
15h
4 kts
max 11 kts
0.13 mm
-1° C
-3
92%
902 hpa
225°
SW
16h
4 kts
max 11 kts
0.05 mm
-1° C
-3
91%
902 hpa
220°
SW
17h
3 kts
max 10 kts
0.07 mm
-1° C
-3
91%
902 hpa
215°
SW
18h
3 kts
max 9 kts
0.09 mm
-1° C
-3
91%
902 hpa
210°
SSW
19h
2 kts
max 7 kts
0.11 mm
-1° C
-2
91%
903 hpa
204°
SSW
20h
2 kts
max 6 kts
0.09 mm
-1° C
-2
91%
903 hpa
197°
SSW
21h
2 kts
max 6 kts
0.07 mm
-1° C
-2
91%
903 hpa
191°
S
22h
2 kts
max 5 kts
0.05 mm
-1° C
-2
91%
903 hpa
178°
S
23h
2 kts
max 4 kts
-1° C
-2
90%
903 hpa
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Additional information
General
This is the wind, wave and weather Superforecast 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 or paragliding.
Superforecast
The Superforecast is based on the best high resolution weather prediction models. The Superforecast is available for Europe, North America, South Africa, Egypt and the Canary Islands. The horizontal resolution is 5 kilometers. The Superforecast is updated 4 times per day. Predictions are available in time steps of 1 hour for up to 3 days into the future. Forecast and Superforecast are based on different physical models and therefore may cause divergent predictions. Due to its higher horizontal resolution the Superforecast tends to be more accurate, especially for locations with a complex topography and local thermal effects. The arrows point in the direction in which the wind is blowing.Check the Superforecast 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 the Superforecast 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.