– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Wed 14 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Wed 14 Jan Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 12°C on Fri morning, min 5°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Mild temperatures (max 9°C on Sat night, min 6°C on Sun afternoon). Wind will be generally light.
		Thursday 15			Friday 16			Saturday 17			Sunday 18			Monday 19			Tuesday 20
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds
km/h	N	NNW	ENE	ESE	ENE	ESE	ESE	SSE	SSW	WSW	SSW	NW	ESE	E	E	S	WSW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	8	11	11	11	12	12	11	11	11	9	8	7	7	9	9	9	9	7	5
min °C	5	10	11	10	12	12	11	11	9	7	7	6	6	8	8	8	8	6	4
chill °C	2	10	11	8	12	11	10	11	9	7	7	6	4	7	7	8	8	5	1

Freezing level m	3500	3600	3500	3700	3850	3800	3750	3600	3600	3400	3300	3150	3050	3250	3450	3450	3250	3000	2650
Cloud base (m)	650																8500		5850

	—	7:48	—	—	7:48	—	—	7:48	—	—	7:47	—	—	7:46	—	—	7:46	—	—
	—	—	4:43	—	—	4:44	—	—	4:45	—	—	4:46	—	—	4:49	—	—	4:50	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 12°C on Fri morning, min 5°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Mild temperatures (max 9°C on Sat night, min 6°C on Sun 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. 46 minutes ago	8° C	Dry	Calm (0 kph at 345).
Renton Airport 36 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Light winds from the NNW (6 kph at 330).	16 km Low: scattered Mid: broken
Auburn 39 km SW 119m alt. 40 minutes ago	-3° C	-	Calm (0 kph at 219).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Light rain .	Wind obs. (9 kph from 230 degs) was rejected.	1 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	10° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and cloudy.	Light winds from the NE (13 kph at 40).	16 km Low: overcast
Snohomish 49 km NW 196m alt. 27 minutes ago	8° C	Dry	Calm (0 kph at 261).
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	9° C		Moderate winds from the N (21 kph at 10).
SHIP2329 55 km SW 15m alt. 1 hour ago				- km
BUOY-TCNW1 57 km SW 3m alt. 1 hour ago

* 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.