– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Thu 26 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Thu 26 Feb 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 11°C on Sun morning, min 3°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 18mm), heaviest on Tue night. Very mild (max 11°C on Sun afternoon, min 4°C on Sun night). Wind will be generally light.
	Thu 26		Friday 27			Saturday 28			Sunday 1			Monday 2			Tuesday 3
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	light rain	cloudy	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	cloudy	cloudy	heavy rain
km/h	SW	SW	SW	WSW	W	NNW	N	ENE	SE	N	ENE	NNW	NW	ENE	SSW	WSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.2	0.3	0.1	—	0.1	—	—	—	—	—	—	—	—	—	—	—	16
max °C	5	4	6	6	4	7	8	4	11	11	6	11	11	6	11	10	6
min °C	5	4	5	6	3	5	5	3	9	6	4	9	7	6	9	8	5
chill °C	2	2	2	4	3	4	5	1	9	6	4	8	7	6	9	8	2

Freezing level m	1200	1150	1050	1300	1000	1600	2350	2550	2450	2400	2350	2500	2400	2450	2400	1900	1400
Cloud base (m)	500	700	650	750	550	400		9100							6300		400

	—	—	6:50	—	—	6:48	—	—	6:47	—	—	6:45	—	—	6:43	—	—
	5:46	—	—	5:49	—	—	5:50	—	—	5:52	—	—	5:52	—	—	5:54	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 11°C on Sun morning, min 3°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 18mm), heaviest on Tue night. Very mild (max 11°C on Sun afternoon, min 4°C on Sun night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 500 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 6).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 256).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12° C	Clear	Moderate winds from the SSW (24 kph at 200).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	18° C	Dry	Calm (3 kph at 54).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Moderate rain .	Light winds from the N (11 kph at 1).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	11° C	Dry and partly cloudy.	Moderate winds from the S (20 kph at 190).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	10° C	Dry and partly cloudy.	Moderate winds from the SSW (26 kph at 200).	16 km Low: broken Mid: broken High: broken
Snohomish 49 km NW 196m alt. 1 hour ago	9° C	Dry	Wind obs. (11 kph from 197 degs) was rejected.
SHIP4000 51 km W 15m alt. 2 hours ago				- km
SHIP1172 54 km W -m alt. 50 minutes ago	10° C	-	Light winds from the S (13 kph at 180).

* 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.