– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 am Sat 03 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Sat 03 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 22°C on Sat afternoon, min 12°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 20°C on Thu afternoon, min 11°C on Tue morning). Wind will be generally light.
	Saturday 3			Sunday 4			Monday 5			Tuesday 6			Wednesday 7			Thursday 8
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds
Cloud base (m)					7000	6550			8650	9000	8750	9650		9300				7150
km/h	SE	N	ESE	W	W	SE	NW	NW	NNE	NNW	NNW	NE	NNW	NNW	NE	NW	NW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	19	22	17	21	22	17	17	19	14	16	17	13	17	19	15	19	20	15
min °C	14	21	15	16	22	14	13	18	12	11	17	13	13	19	14	14	19	13
chill °C	14	21	15	16	22	14	13	18	12	11	17	13	13	19	14	14	19	12

Freezing level m	4200	4150	4200	4150	4200	4000	3800	3900	4100	4100	4150	4150	4000	4050	4100	3850	3800	3650

	7:07	—	—	7:09	—	—	7:09	—	—	7:11	—	—	7:13	—	—	7:15	—	—
	—	6:43	—	—	6:40	—	—	6:38	—	—	6:37	—	—	6:35	—	—	6:32	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Sat afternoon, min 12°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 20°C on Thu afternoon, min 11°C on Tue morning). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Si. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.

Live conditions reported by 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Black Diamond 32 km SSW 192m alt. 46 minutes ago		-	Wind obs. (10 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 21m alt. 2 hours ago	14°C	Dry and cloudy.	Light winds from the NNE.(Wind varies from 007 to 011 degs) (9 kph at 30).	16 km Low: overcast
Auburn 39 km SW 119m alt. 1 hour ago	17°C	Dry	Calm (2 kph at 103).
Stampede Pass Airport 40 km SE 1208m alt. 2 hours ago	9°C	Clear	Calm (0 kph at 0).	16 km
SHIP4408 43 km W 15m alt. 2 hours ago				- km
SHIP11320 43 km W 15m alt. 4 hours ago				- km
SHIP7708 43 km W 15m alt. 3 hours ago				- km
SHIP10232 43 km W 15m alt. 1 hour ago				- km
SHIP6092 43 km W 15m alt. 2 hours ago				- km
SHIP5628 43 km W 15m alt. 1 hour ago				- km

* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.