– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Thu 16 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Thu 16 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 12°C on Sun morning, min -3°C on Thu afternoon). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 15°C on Mon afternoon, min 6°C on Wed morning). Winds increasing (calm on Sun night, fresh winds from the NNW by Tue night).
	Thu 16		Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	clear	some clouds	cloudy	rain shwrs	light rain
km/h	WSW	SW	ESE	SE	SSE	SE	ESE	ESE	ESE	SE	NE	ESE	WNW	N	NNE	NNW	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1	0.7
max °C	-1	-2	-2	2	4	6	8	10	12	13	12	14	15	13	12	10	10
min °C	-3	-3	-3	0	2	5	7	8	10	12	11	13	14	10	11	10	8
chill °C	-7	-9	-3	0	0	3	6	7	8	10	11	12	14	10	11	10	4

Freezing level m	1100	850	1000	1450	2200	2350	2450	2700	2900	2950	3050	3200	3200	3300	3250	3250	3250
Cloud base (m)	600	550	450	650	5150		2700	3000	2950	3400	5800	5800		4850	5300	1500

	—	—	6:15	—	—	6:13	—	—	6:11	—	—	6:09	—	—	6:07	—	—
	7:57	—	—	7:58	—	—	—	8:00	—	—	8:00	—	—	8:02	—	—	8:04

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 12°C on Sun morning, min -3°C on Thu afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 15°C on Mon afternoon, min 6°C on Wed morning). Winds increasing (calm on Sun night, fresh winds from the NNW by Tue night).

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	8° C	Dry	Calm (0 kph at 311).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	1° C	-	Calm (0 kph at 338).
Renton 30 km WSW 160m alt. 53 minutes ago	9° C	Dry	Calm (5 kph at 203).
Grotto wx 35 km NE 321m alt. 1 hour ago	4° C	Dry	Calm (0 kph at 79).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12° C	Dry and cloudy.	Light winds from the WSW.(Wind varies from 200 to 280 degs) (13 kph at 240).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	-1° C	-	Calm (0 kph at 239).
Auburn 39 km SW 119m alt. 1 hour ago	17° C	Dry	Calm (0 kph at 207).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	-	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	4° C	Dry	Wind obs. (10 kph from 300 degs) was rejected.
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12° C	Dry and cloudy.	Light winds from the SW (15 kph at 230).	16 km Low: overcast

* 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.