– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Sat 06 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Sat 06 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A moderate fall of snow heaviest on Sun morning. Turning milder with heavy rain (total 43mm), heaviest during Mon afternoon. Freeze-thaw conditions (max 6°C on Mon afternoon, min -1°C on Mon night). Mainly severe gales.										Days 5–7 Weather Summary A moderate fall of snow heaviest on Wed morning. Turning milder with heavy rain (total 57mm), heaviest during Thu afternoon. Freeze-thaw conditions (max 7°C on Thu night, min 0°C on Wed morning). Winds decreasing (gales from the WSW on Tue night, calm by Wed afternoon).
		Sunday 7			Monday 8			Tuesday 9			Wednesday 10			Thursday 11			Friday 12
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	light snow	rain shwrs	light rain	heavy rain	heavy rain	light snow	cloudy	light snow	mod. rain	mod. snow	light snow	light snow	mod. rain	heavy rain	heavy rain	rain shwrs	rain shwrs	rain shwrs
km/h	WSW	SSW	WSW	SW	SSW	WSW	NW	SW	SSW	WSW	WSW	N	WSW	WSW	WSW	WSW	WSW	WSW	SW
See all weather maps
cm	2	3	—	—	—	—	5	—	1	—	6	1	4	—	—	—	—	—	—
mm	—	4	4	1.2	13	14	7	—	—	6	—	—	10	10	13	15	2	1.1	1
max°C	2	3	3	2	5	6	6	0	1	5	0	1	5	6	5	7	7	6	5
min°C	2	2	3	1	4	6	-1	-1	0	1	0	0	1	5	5	6	7	6	5
chill°C	-4	-3	-4	-5	-2	-1	-3	-4	-3	-6	-6	-4	-4	-1	0	1	3	2	1

Freezing level (m)	1550	1700	1750	1450	2050	2400	1400	1150	1300	2100	1300	1300	1800	2500	2450	2700	2800	3300	3250
Cloud base (m)	500	400	450	450	700	400	450	500	850	400	450	400	400	450	450	450	500	600	550

	—	7:39	—	—	7:41	—	—	7:41	—	—	7:43	—	—	7:43	—	—	7:45	—	—
	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A moderate fall of snow heaviest on Sun morning. Turning milder with heavy rain (total 43mm), heaviest during Mon afternoon. Freeze-thaw conditions (max 6°C on Mon afternoon, min -1°C on Mon night). Mainly severe gales.

Mount Si Weather (Days 3-6):

A moderate fall of snow heaviest on Wed morning. Turning milder with heavy rain (total 57mm), heaviest during Thu afternoon. Freeze-thaw conditions (max 7°C on Thu night, min 0°C on Wed morning). Winds decreasing (gales from the WSW on Tue night, calm by Wed afternoon).

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. 36 minutes ago	8° C	Dry	Calm (0 kph at 327).
Black Diamond 32 km SSW 192m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	10° C	Dry and cloudy.	Light winds from the SE (6 kph at 130).	16 km Low: broken Mid: broken High: overcast
Auburn 39 km SW 119m alt. 56 minutes ago	-1° C	-	Calm (0 kph at 59).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	2° C	Light rain .	Calm (0 kph at 0).	0 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and cloudy.	Light winds from the SSE (11 kph at 160).	16 km Low: scattered Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and cloudy.	Light winds from the SSE (13 kph at 160).	16 km Low: overcast
Snohomish 49 km NW 196m alt. 2 hours ago	7° C	Dry	Calm (2 kph at 123).
Seattle 49 km WSW 100m alt. 35 minutes ago	12° C	-
BUOY-WPOW1 55 km W 3m alt. 39 minutes ago	11° C		Fresh winds from the S (32 kph at 180).

* 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.