– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 01 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 01 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A heavy fall of snow, heaviest during Thu morning. Freeze-thaw conditions (max 2°C on Wed afternoon, min -3°C on Wed night). Winds decreasing (strong winds from the SW on Wed night, calm by Fri night).									Days 4–6 Weather Summary Mostly dry. Very mild (max 12°C on Sun morning, min 4°C on Sat morning). Wind will be generally light.
	Wednesday 1			Thursday 2			Friday 3			Saturday 4			Sunday 5			Monday 6
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light snow	light snow	mod. snow	mod. snow	light snow	cloudy	some clouds	some clouds	clear	clear	clear	some clouds	some clouds	cloudy	some clouds	clear	some clouds	rain shwrs
km/h	ESE	ESE	SW	WNW	WSW	SW	SW	WSW	N	ENE	ENE	ESE	ESE	ESE	SE	SW	WSW	SW
See all weather maps
cm	1	1	8	8	2	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1
max °C	1	2	-1	-2	-1	-1	0	2	2	6	7	9	12	12	12	11	11	9
min °C	-1	1	-3	-3	-1	-2	-1	1	1	4	6	8	10	11	11	11	10	7
chill °C	-6	-4	-10	-11	-5	-7	-3	-1	1	2	6	8	9	10	10	10	9	4

Freezing level m	1400	1500	850	950	1100	1000	1250	1500	1850	2500	2650	2900	3000	3100	3050	2900	2850	2650
Cloud base (m)	450	650	400	450	450	450	600	800	1050	8300		6500	6800	6450	7950	8150		9000

	6:46	—	—	6:43	—	—	6:41	—	—	6:39	—	—	6:37	—	—	6:35	—	—
	—	7:36	—	—	7:37	—	—	7:38	—	—	7:39	—	—	7:40	—	—	7:43	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A heavy fall of snow, heaviest during Thu morning. Freeze-thaw conditions (max 2°C on Wed afternoon, min -3°C on Wed night). Winds decreasing (strong winds from the SW on Wed night, calm by Fri night).

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 12°C on Sun morning, min 4°C on Sat morning). Wind will be generally light.

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. 41 minutes ago	8° C	Dry	Calm (0 kph at 333).
Renton 30 km WSW 160m alt. 58 minutes ago	8° C	Dry	Calm (3 kph at 48).
Black Diamond 32 km SSW 192m alt. 46 minutes ago		-	Wind obs. (16 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	Light rain .	Wind obs. (7 kph from 1 degs) was rejected.	10 km Mid: overcast
Auburn 39 km SW 119m alt. 45 minutes ago		-	Calm (0 kph at 258).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2° C	Dry and cloudy.	Calm.(Wind varies from 003 to 011 degs) (0 kph at 0).	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	8° C	Light rain .	Light winds from the E (17 kph at 100).	6 km Mid: broken High: overcast
Snohomish 49 km NW 196m alt. 2 hours ago	8° C	Dry	Calm (5 kph at 5).
Seattle 49 km WSW 100m alt. 1 hour ago		-	Wind obs. (14 kph from 164 degs) was rejected.
SHIP3215 54 km W 15m alt. 1 hour ago			Light winds from the SE (12 kph at 130).	- 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.