– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Fri 19 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Fri 19 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary A light covering of new snow mostly falling on Sat night. Freeze-thaw conditions (max 9°C on Sat afternoon, min -3°C on Sat night). Winds decreasing (strong winds from the SW on Sat night, light winds from the WSW by Sun morning).									Days 4–6 Weather Summary Mostly dry. Freeze-thaw conditions (max 10°C on Tue afternoon, min -1°C on Wed morning). Wind will be generally light.
	Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	snow shwrs	snow shwrs	some clouds	some clouds	clear	some clouds	some clouds	some clouds	cloudy	cloudy	some clouds	cloudy	light rain	cloudy
km/h	E	ESE	ESE	SE	SW	WSW	WSW	NNW	N	E	E	ESE	ESE	SW	SW	SW	WSW	WSW
Wave Height Map See all maps
cm	—	—	—	—	2.0	6	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1	—
max°C	4	7	5	7	9	0	-2	2	0	2	7	8	8	10	6	-1	2	2
min°C	2	6	4	6	1	-3	-3	0	-1	0	6	7	8	9	0	-1	1	0
chill°C	-2	2	-2	1	-5	-11	-10	-4	-5	-2	5	4	5	8	-6	-5	-2	-2

Freezing level (m)	1750	2000	2150	2300	1400	900	1050	1450	1050	1600	2450	2700	2650	2450	1250	1200	1600	1350
Cloud base (m)		2850	8650		1600	550	600	850	1750		7000	6150	6150	2650	450	450	850	850

	6:09	—	—	6:07	—	—	6:05	—	—	6:03	—	—	6:01	—	—	6:00	—	—
	—	—	8:02	—	—	8:04	—	—	8:05	—	—	8:07	—	—	8:07	—	—	8:09

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: A light covering of new snow mostly falling on Sat night. Freeze-thaw conditions (max 9°C on Sat afternoon, min -3°C on Sat night). Winds decreasing (strong winds from the SW on Sat night, light winds from the WSW by Sun morning).

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 10°C on Tue afternoon, min -1°C on Wed 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Snoqualmie Pass 30 km ESE 824m alt. 55 minutes ago	-2° C	-	Calm (2 kph at 89).
Renton Airport 36 km WSW 218m alt. 2 hours ago	6° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	1° C	-	Calm (0 kph at 302).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Clear	Calm (0 kph at 0).	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	-5° C	-	Calm (0 kph at 290).

* 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.