– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Wed 25 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Wed 25 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 11°C on Fri afternoon, min 0°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary A dusting of new snow. Freeze-thaw conditions (max 8°C on Sun afternoon, min -3°C on Mon night). Wind will be generally light.
		Thursday 26			Friday 27			Saturday 28			Sunday 29			Monday 30			Tuesday 31
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	snow shwrs	rain shwrs	clear	clear	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	snow shwrs	snow shwrs	rain shwrs	clear	clear	some clouds	light rain
km/h	SW	SW	WNW	ESE	ESE	NW	NNW	NNW	WNW	SW	W	W	SW	WNW	NW	ENE	NE	WNW	SSE
See all weather maps
cm	1	—	—	—	—	—	—	—	—	—	—	—	1	3	—	—	—	—	—
mm	—	0.1	—	—	—	—	—	—	—	—	—	—	—	—	0.8	—	—	—	0.1
max °C	1	3	7	3	9	11	6	6	8	4	5	8	4	1	2	-1	3	6	4
min °C	0	0	6	1	3	10	3	3	7	0	1	7	0	0	1	-3	-1	6	3
chill °C	-4	-2	6	-1	1	10	3	2	6	0	1	6	-3	-2	-1	-3	-1	6	3

Freezing level m	550	850	1200	1750	2200	2250	1700	1300	1350	700	1200	1350	700	550	750	0	900	1250	1450
Cloud base (m)	500	650	1050	450	4350	5800		600	850	550	950	2450	700	400	500	650	6200		2450

	—	6:58	—	—	6:56	—	—	6:54	—	—	6:52	—	—	6:50	—	—	6:48	—	—
	—	—	7:27	—	—	7:29	—	—	7:30	—	—	7:31	—	—	7:32	—	—	7:34	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A dusting of new snow. Freeze-thaw conditions (max 11°C on Fri afternoon, min 0°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

A dusting of new snow. Freeze-thaw conditions (max 8°C on Sun afternoon, min -3°C on Mon night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 500 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
Harman Heights wx 6 km SSW 251m alt. 41 minutes ago	2° C	-	Calm (0 kph at 342).
Black Diamond 32 km SSW 192m alt. 47 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	5° C	Dry and cloudy.	Light winds from the SSE (7 kph at 150).	16 km Low: overcast
Auburn 39 km SW 119m alt. 37 minutes ago		-	Calm (0 kph at 188).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-4° C	Dry and cloudy.	Light winds from the WSW.(Wind varies from 200 to 310 degs) (13 kph at 250).	16 km Low: scattered Mid: broken High: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	3° C	Dry and partly cloudy.	Light winds from the S (7 kph at 170).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	3° C	Dry and partly cloudy.	Light winds from the SSE (7 kph at 150).	16 km Low: broken
SHIP9110 50 km WSW 3m alt. 2 hours ago	3° C
SHIP3314 50 km WSW 15m alt. 2 hours ago				- km
SHIP10076 50 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.