– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Fri 19 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 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 WSW on Sat night, light winds from the N by Sun night).									Days 4–6 Weather Summary A light covering of new snow mostly falling on Wed morning. Freeze-thaw conditions (max 10°C on Tue afternoon, min -1°C on Tue night). 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	snow shwrs	some clouds	clear	some clouds	cloudy	cloudy	cloudy	light snow	snow shwrs	snow shwrs	cloudy
km/h	ESE	ESE	ESE	SE	SW	WSW	WSW	WNW	N	E	ENE	ESE	SE	WSW	SW	SW	SW	SW
Wave Height Map See all maps
cm	—	—	—	—	1.0	6	—	2.0	—	—	—	—	—	—	1.0	3	2.0	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1	—	—	—
max°C	4	6	5	7	9	0	-1	1	0	2	7	8	8	10	7	-1	1	1
min°C	2	6	4	5	1	-3	-3	1	-1	0	6	7	8	9	-1	-1	0	0
chill°C	-2	2	-2	0	-4	-11	-9	-4	-5	-2	5	5	6	9	-6	-7	-5	-3

Freezing level (m)	1700	1950	2100	2300	1500	900	1100	1350	1050	1450	2400	2700	2650	2550	1250	1200	1400	1350
Cloud base (m)		2850	8750		1650	500	550	800	1600		6800	6250	6100		500	450	450	750

	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 WSW on Sat night, light winds from the N by Sun night).

Mount Si Weather (Days 3-6):

A light covering of new snow mostly falling on Wed morning. Freeze-thaw conditions (max 10°C on Tue afternoon, min -1°C on Tue night). 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. 43 minutes ago	13° C	-	Calm (0 kph at 318).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the N (11 kph at 10).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	8° C	Dry	Calm (3 kph at 240).
Woodinville 43 km WNW 137.2m alt. 1 hour ago	10° C	Dry	Light winds from the ESE (6 kph at 113).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	17° C	Clear	Light winds from the N (11 kph at 10).	16 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.