– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Sat 29 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Sat 29 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 4°C on Sat morning, min -1°C on Sat afternoon). Wind will be generally light.									Days 4–6 Weather Summary A dusting of snow. Milder later with heavy rain (total 23mm) on Thu night. Freeze-thaw conditions (max 5°C on Thu night, min -1°C on Tue morning). Winds increasing (calm on Tue night, gales from the WSW by Thu night).
	Saturday 29			Sunday 30			Monday 1			Tuesday 2			Wednesday 3			Thursday 4
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	some clouds	clear	some clouds	clear	some clouds	some clouds	cloudy	light snow	cloudy	some clouds	some clouds	cloudy	some clouds	cloudy	light snow	mod. rain	heavy rain
km/h	SE	SSW	NE	SW	NW	N	N	NW	SW	NNW	NNW	NNW	WNW	WNW	W	WSW	SW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	2	—	—	—	—	—	—	2	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	6	17
max°C	4	1	0	1	2	2	2	2	1	0	0	1	1	0	1	1	3	5
min°C	2	-1	-1	1	1	1	2	2	0	-1	-1	0	1	0	0	1	2	3
chill°C	1	-1	-3	1	-1	-2	-1	-1	-4	-5	-1	0	0	-2	-2	-3	-3	-4

Freezing level (m)	1950	1450	950	1450	1600	2600	3100	2100	1250	1200	1200	1450	1550	1400	1350	1500	2150	2600
Cloud base (m)	6000	2750	450	6650	6300		2350	2050	800	450	450	650	500	650	800	450	400	400

	7:31	—	—	7:31	—	—	7:33	—	—	7:35	—	—	7:35	—	—	7:37	—	—
	—	4:17	—	—	4:17	—	—	4:16	—	—	4:16	—	—	4:16	—	—	4:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of new snow. Freeze-thaw conditions (max 4°C on Sat morning, min -1°C on Sat afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

A dusting of snow. Milder later with heavy rain (total 23mm) on Thu night. Freeze-thaw conditions (max 5°C on Thu night, min -1°C on Tue morning). Winds increasing (calm on Tue night, gales from the WSW by Thu night).

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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	6° C	Dry	Calm (0 kph at 230).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Clear	Light winds from the S (7 kph at 170).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 206).
Stampede Pass Airport 40 km SE 628m alt. 44 minutes ago	-3° C	Dry and cloudy.	Calm (0 kph at 0).	14 km Low: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	8° C	Dry and partly cloudy.	Wind obs. (7 kph from 190 degs) was rejected.	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	6° C	Dry and partly cloudy.	Light winds from the SW (7 kph at 230).	16 km Low: few Mid: broken
Snohomish 49 km NW 196m alt. 2 hours ago	6° C	Dry	Calm (5 kph at 66).
Seattle 49 km WSW 100m alt. 21 minutes ago	18° C	-	Calm (2 kph at 96).
BUOY-WPOW1 55 km W 3m alt. 40 minutes ago	8° C		Light winds from the N (15 kph at 10).

* 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.