– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Sat 31 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Sat 31 Jan Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary A light covering of new snow on Sun morning turning to drizzle on Mon night. Mild temperatures (max 9°C on Sat night, min 1°C on Sun morning). Winds decreasing (strong winds from the SW on Sun afternoon, calm by Mon night).										Days 5–7 Weather Summary Mostly dry. Very mild (max 14°C on Thu morning, min 6°C on Fri afternoon). Wind will be generally light.
		Sunday 1			Monday 2			Tuesday 3			Wednesday 4			Thursday 5			Friday 6
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	light snow	snow shwrs	some clouds	light snow	light rain	rain shwrs	some clouds	some clouds	some clouds	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds
km/h	S	SW	SW	SW	SSW	WSW	WSW	SSE	S	SW	SE	S	ENE	ESE	E	SE	SW	SW	WSW
See all weather maps
cm	—	5	1	—	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.7	0.8	—	—	—	—	—	—	—	—	—	—	—	—
max °C	9	2	2	2	2	3	6	9	9	10	13	13	11	14	14	13	9	8	6
min °C	4	1	2	1	2	3	4	8	9	9	11	11	11	13	13	9	9	6	4
chill °C	-1	-5	-5	-5	-3	-3	2	8	8	7	11	11	11	12	12	8	8	4	1

Freezing level m	2500	1550	1500	1450	1750	2000	2350	3050	3200	3200	3300	3450	3400	3600	3750	3600	3050	2800	2600
Cloud base (m)	5100	1500	450	700	2600	650	750		5800	4850	9050						6150	7050	6350

	—	7:31	—	—	7:31	—	—	7:30	—	—	7:28	—	—	7:26	—	—	7:26	—	—
	—	—	5:07	—	—	5:09	—	—	5:10	—	—	5:13	—	—	5:14	—	—	5:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A light covering of new snow on Sun morning turning to drizzle on Mon night. Mild temperatures (max 9°C on Sat night, min 1°C on Sun morning). Winds decreasing (strong winds from the SW on Sun afternoon, calm by Mon night).

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 14°C on Thu morning, min 6°C on Fri afternoon). 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. 2 hours ago	7° C	Dry	Calm (0 kph at 30).
Black Diamond 32 km SSW 192m alt. 1 hour ago	13° C	Dry	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 1 hour ago	7° C	Mist -.	Wind obs. (11 kph from 180 degs) was rejected.	5 km Low: broken
Auburn 39 km SW 119m alt. 35 minutes ago	-4° C	-	Calm (0 kph at 198).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	0° C	Moderate rain .	Wind obs. (6 kph from 1 degs) was rejected.	1 km
SHIP4506 43 km W 15m alt. 3 hours ago			Calm (2 kph at 0).	- km
SHIP3938 43 km W 15m alt. 2 hours ago			Calm (6 kph at 180).	- km
Seattl / oeing Airport 44 km WSW 218m alt. 1 hour ago	6° C	Mist -.	Light winds from the SE (6 kph at 130).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 1 hour ago	8° C	Fog -.	Light winds from the SSE (13 kph at 160).	0 km
Snohomish 49 km NW 196m alt. 2 hours ago	8° C	Dry	Calm (5 kph at 0).

* 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.