– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Sat 27 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Sat 27 Dec 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 5°C on Mon night, min -6°C on Sat morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Mild temperatures (max 6°C on Tue morning, min 2°C on Thu night). Winds increasing (light winds from the SSW on Tue morning, near gales from the SSW by Thu night).
	Saturday 27			Sunday 28			Monday 29			Tuesday 30			Wednesday 31			Thursday 1
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	snow shwrs	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	some clouds	some clouds	cloudy	some clouds	some clouds	cloudy	light rain
km/h	NW	SW	WSW	N	N	N	N	NNW	NNE	SSW	SSW	SSW	SW	SSW	SW	SSW	SW	SSW
See all weather maps
cm	—	—	4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1
max °C	-6	-6	-4	-2	-1	1	3	3	5	6	6	6	6	6	6	5	4	3
min °C	-6	-6	-5	-3	-2	-1	2	3	4	6	6	5	6	6	4	5	4	2
chill °C	-10	-11	-12	-8	-7	-5	-1	2	2	4	4	3	3	3	0	2	0	-6

Freezing level m	250	400	350	550	800	850	2000	2150	3100	3100	3050	2750	3000	3050	2550	2550	2100	1850
Cloud base (m)	450	450	450	550	750	700	850	500	450	450	450		3050	6100	6000	5150	5550	2000

	7:54	—	—	7:54	—	—	7:54	—	—	7:54	—	—	7:54	—	—	7:54	—	—
	—	4:22	—	—	4:22	—	—	4:22	—	—	4:23	—	—	4:24	—	—	4:25	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of new snow. Freeze-thaw conditions (max 5°C on Mon night, min -6°C on Sat morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Mild temperatures (max 6°C on Tue morning, min 2°C on Thu night). Winds increasing (light winds from the SSW on Tue morning, near gales from the SSW 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. 43 minutes ago	2° C	-	Calm (0 kph at 71).
Black Diamond 32 km SSW 192m alt. 57 minutes ago		-	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	4° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Auburn 39 km SW 119m alt. 2 hours ago	9° C	Dry	Calm (0 kph at 144).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-5° C	Moderate rain .	Light winds from the N (7 kph at 1).	16 km
SHIP4214 42 km WSW 15m alt. 3 hours ago				- km
SHIP9786 42 km WSW 3m alt. 3 hours ago	23° C
SHIP4394 42 km WSW 3m alt. 1 hour ago	12° C
SHIP4323 42 km WSW 15m alt. 2 hours ago				- km
SHIP3227 42 km WSW 15m alt. 2 hours 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.