– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 9 pm Wed 04 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 9 pm Wed 04 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A dusting of snow. Milder later with heavy rain (total 21mm) on Fri night. Very mild (max 11°C on Sat morning, min 2°C on Wed night). Winds increasing (light winds from the SW on Thu morning, fresh winds from the SW by Fri morning).										Days 5–7 Weather Summary Moderate rain (total 16mm), heaviest on Sat night. Very mild (max 11°C on Sat night, min 1°C on Sun afternoon). Mainly severe gales.
		Thursday 5			Friday 6			Saturday 7			Sunday 8			Monday 9
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	snow shwrs	snow shwrs	rain shwrs	light rain	light rain	light rain	mod. rain	some clouds	some clouds	rain shwrs	rain shwrs	cloudy	cloudy	some clouds	clear	clear
Cloud base (m)	550	850	950	2950	1800	1800	400	700	7800	900	650	600	5600	3000		6250
km/h	SW	SW	SW	SSW	SSW	SSW	S	S	SSE	SW	WSW	WSW	ESE	SSW	SSW	S
See all weather maps
cm	1	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	7	0.4	0.1	0.1	0.6	3	10	—	—	15	1.8	—	—	—	—	—
max °C	3	3	3	5	7	7	9	11	11	11	3	2	5	4	4	6
min °C	2	2	2	3	6	7	7	10	11	3	2	1	2	4	4	4
chill °C	-3	-3	-1	0	2	2	3	8	9	-4	-4	0	0	1	0	1

Freezing level m	1750	1500	1700	2550	2400	2950	3050	3150	2950	1800	1700	1500	2050	2000	2000	2550

	—	6:56	—	—	6:58	—	—	7:00	—	—	7:01	—	—	7:03	—	—
	—	—	4:43	—	—	4:42	—	—	4:39	—	—	4:38	—	—	4:37	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of snow. Milder later with heavy rain (total 21mm) on Fri night. Very mild (max 11°C on Sat morning, min 2°C on Wed night). Winds increasing (light winds from the SW on Thu morning, fresh winds from the SW by Fri morning).

Mount Si Weather (Days 3-6):

Moderate rain (total 16mm), heaviest on Sat night. Very mild (max 11°C on Sat night, min 1°C on Sun afternoon). Mainly severe gales.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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
Renton 30 km WSW 160m alt. 1 hour ago	9°C	Dry	Calm (2 kph at 189).
Black Diamond 32 km SSW 192m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 716m alt. 1 hour ago	11°C	Dry and partly cloudy.	Light winds from the S (7 kph at 180).	16 km Low: broken
Auburn 39 km SW 119m alt. 32 minutes ago	2°C	-	Calm (0 kph at 93).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4°C	Light rain .	Calm (0 kph at 0).	0 km
Monroe 44 km NW 80m alt. 31 minutes ago	8°C	Dry	Calm (0 kph at 132).
Seattle Tacoma International Airport 44 km WSW 716m alt. 2 hours ago	10°C	Dry and partly cloudy.	Fresh winds from the SSW (30 kph at 210).	16 km Low: scattered
Seattl / oeing Airport 44 km WSW 716m alt. 2 hours ago	11°C	Dry and cloudy.	Light winds from the S (9 kph at 170).	16 km Low: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	11°C	Dry	Wind obs. (11 kph from 196 degs) was rejected.

* 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.