– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Tue 31 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Tue 31 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 3°C on Tue afternoon, min -3°C on Wed night). Winds increasing (calm on Tue afternoon, fresh winds from the WSW by Wed night).									Days 4–6 Weather Summary Mostly dry. Freeze-thaw conditions (max 8°C on Sun night, min -1°C on Fri morning). Wind will be generally light.
	Tuesday 31			Wednesday 1			Thursday 2			Friday 3			Saturday 4			Sunday 5
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	cloudy	cloudy	light snow	light snow	mod. snow	light snow	light snow	some clouds	some clouds	some clouds	clear	clear	some clouds	some clouds	clear	clear	some clouds
km/h	SE	W	SSE	ESE	SE	SW	W	WSW	WSW	SW	W	SW	SSW	N	W	W	NNE	ESE
See all weather maps
cm	—	—	—	1	1	6	5	1	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	1	3	2	2	3	-1	-3	-1	0	0	3	3	5	6	6	6	7	8
min °C	0	3	-1	-1	1	-3	-3	-2	-1	-1	2	2	3	6	5	5	6	7
chill °C	-3	2	-4	-5	-4	-9	-8	-6	-5	-3	2	2	3	6	5	5	6	7

Freezing level m	1400	1650	1450	1500	1450	900	850	1150	1100	1300	1650	2000	2200	2350	2500	2500	2450	2700
Cloud base (m)	4500	4600	2150	450	1400	550	450	450	450	600	950	1750	6500	5500	8950	9050		6900

	6:48	—	—	6:46	—	—	6:43	—	—	6:41	—	—	6:39	—	—	6:37	—	—
	—	7:34	—	—	7:36	—	—	7:37	—	—	7:38	—	—	7:39	—	—	7:40	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 3°C on Tue afternoon, min -3°C on Wed night). Winds increasing (calm on Tue afternoon, fresh winds from the WSW by Wed night).

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 8°C on Sun night, min -1°C on Fri 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. 1 hour ago	6° C	Dry	Calm (0 kph at 359).
Renton 30 km WSW 160m alt. 2 hours ago	2° C	-	Calm (0 kph at 41).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	3° C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 205).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-3° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	5° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	4° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: few Mid: broken High: broken
Snohomish 49 km NW 196m alt. 55 minutes ago	7° C	Dry	Wind obs. (6 kph from 352 degs) was rejected.
Seattle 49 km WSW 100m alt. 1 hour ago		-	Wind obs. (16 kph from 152 degs) was rejected.

* 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.