– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Fri 05 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Fri 05 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mild with moderate rain (total 19mm) on Fri morning, Becoming colder with a light covering of snow, mostly falling on Fri night. Freeze-thaw conditions (max 6°C on Fri morning, min 0°C on Fri night). Winds decreasing (gales from the WSW on Fri night, light winds from the SW by Sun night).									Days 4–6 Weather Summary Mild with heavy rain (total 57mm), heaviest during Mon night. Becoming colder with a moderate fall of snow heaviest on Wed afternoon. Freeze-thaw conditions (max 6°C on Mon afternoon, min -4°C on Wed night). Mainly severe gales.
	Friday 5			Saturday 6			Sunday 7			Monday 8			Tuesday 9			Wednesday 10
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	light rain	light snow	light snow	snow shwrs	cloudy	light snow	light rain	light rain	heavy rain	heavy rain	light snow	light snow	mod. rain	light snow	light snow	snow shwrs	snow shwrs
km/h	WSW	WSW	WSW	WSW	WSW	SW	SSW	WSW	SW	SW	WSW	W	S	SW	WSW	WSW	WNW	SW
See all weather maps
cm	—	—	3	1	2	—	1	—	—	—	—	4	1	—	1	2	4	1
mm	7	1.8	—	—	—	—	2	4	4	11	10	15	1.7	9	10	—	—	—
max°C	6	3	1	0	1	1	2	2	3	5	6	3	3	6	5	0	-1	-3
min°C	5	1	0	0	0	0	1	2	2	3	6	0	0	6	1	0	-3	-4
chill°C	-1	-8	-9	-8	-8	-6	-6	-5	-4	-4	-1	-3	-3	-1	-8	-10	-10	-10

Freezing level (m)	2450	1850	1400	1250	1400	1250	1450	1650	1650	2000	2400	1600	1250	2700	2050	1300	1050	800
Cloud base (m)	400	400	400	450	450	600	450	400	700	450	400	400	400	350	350	350	450	500

	7:37	—	—	7:39	—	—	7:39	—	—	7:41	—	—	7:41	—	—	7:43	—	—
	—	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: Mild with moderate rain (total 19mm) on Fri morning, Becoming colder with a light covering of snow, mostly falling on Fri night. Freeze-thaw conditions (max 6°C on Fri morning, min 0°C on Fri night). Winds decreasing (gales from the WSW on Fri night, light winds from the SW by Sun night).

Mount Si Weather (Days 3-6):

Mild with heavy rain (total 57mm), heaviest during Mon night. Becoming colder with a moderate fall of snow heaviest on Wed afternoon. Freeze-thaw conditions (max 6°C on Mon afternoon, min -4°C on Wed night). 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 238).
Black Diamond 32 km SSW 192m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	Dry and cloudy.	Light winds from the SSE.(Wind varies from 003 to 007 degs) (6 kph at 160).	0.0 km High: overcast
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 126).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	Light rain .	Calm (0 kph at 0).	1 km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	8° C	Dry and cloudy.	Light winds from the SE (13 kph at 140).	11 km Low: few Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	8° C	Mist -.	Light winds from the SSE (13 kph at 150).	2 km Low: scattered Mid: overcast
Snohomish 49 km NW 196m alt. 53 minutes ago	6° C	Dry	Calm (5 kph at 21).
Seattle 49 km WSW 100m alt. 1 hour ago	12° C	-	Wind obs. (8 kph from 5 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 2 hours ago	9° C		Moderate winds from the S (28 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.