– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Thu 05 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Thu 05 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 24mm), heaviest during Sat night. Freeze-thaw conditions (max 15°C on Thu afternoon, min 0°C on Sun morning). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sun morning).											Days 5–7 Weather Summary A light covering of new snow mostly falling on Sun night. Freeze-thaw conditions (max 3°C on Tue afternoon, min -2°C on Sun night). Winds decreasing (fresh winds from the WSW on Sun night, calm by Wed morning).
	Thu 5		Friday 6			Saturday 7			Sunday 8			Monday 9			Tuesday 10
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	some clouds	light rain	heavy rain	mod. rain	cloudy	cloudy	light snow	light snow	some clouds	some clouds	some clouds	some clouds	some clouds
km/h	SE	SW	SW	SW	SSW	SSW	SSW	WSW	SW	W	WSW	WSW	SW	S	SE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	4	2	—	—	—	—	—
mm	—	—	—	—	—	2	11	10	—	—	—	—	—	—	—	—	—
max °C	15	11	10	9	6	5	4	3	1	-1	-1	-1	-1	1	2	3	1
min °C	12	10	10	7	5	3	4	1	0	-1	-2	-1	-1	-1	2	1	1
chill °C	10	8	8	5	0	-3	-3	-3	0	-3	-8	-7	-6	-5	-1	-2	-2

Freezing level m	3650	3150	2800	2650	2400	2200	2050	1650	1450	1200	1000	1050	1150	1100	1600	1650	1550
Cloud base (m)		6750	6200	6650		2500	600	450	550	500	450	450	450	500	2250	3250

	—	—	7:26	—	—	7:24	—	—	7:22	—	—	7:20	—	—	7:20	—	—
	5:14	—	—	5:15	—	—	5:17	—	—	5:19	—	—	5:21	—	—	5:22	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 24mm), heaviest during Sat night. Freeze-thaw conditions (max 15°C on Thu afternoon, min 0°C on Sun morning). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sun morning).

Mount Si Weather (Days 3-6):

A light covering of new snow mostly falling on Sun night. Freeze-thaw conditions (max 3°C on Tue afternoon, min -2°C on Sun night). Winds decreasing (fresh winds from the WSW on Sun night, calm by Wed morning).

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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 32 minutes ago	6° C	Dry	Calm (0 kph at 345).
Black Diamond 32 km SSW 192m alt. 37 minutes ago	18° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Clear	Light winds from the SSE (7 kph at 160).	16 km
Auburn 39 km SW 119m alt. 39 minutes ago	2° C	-	Calm (0 kph at 128).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Light rain .	Wind obs. (9 kph from 40 degs) was rejected.	0 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	10° C	Clear	Light winds from the ESE (6 kph at 120).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	10° C	Dry and partly cloudy.	Light winds from the ESE (11 kph at 120).	16 km Low: broken Mid: broken
Snohomish 49 km NW 196m alt. 2 hours ago	6° C	Dry	Calm (2 kph at 209).
SHIP3029 54 km W 15m alt. 2 hours ago			Calm (4 kph at 240).	- km
SHIP4160 54 km W 15m alt. 3 hours ago			Calm (4 kph at 170).	- 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.