– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Fri 21 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Fri 21 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 24mm), heaviest during Sun morning. Very mild (max 10°C on Sat morning, min 2°C on Sun afternoon). Winds increasing (calm on Fri morning, fresh winds from the SW by Sun morning).									Days 4–6 Weather Summary Heavy rain (total 33mm), heaviest during Tue night. Mild temperatures (max 6°C on Wed afternoon, min 2°C on Mon morning). Wind will be generally light.
	Friday 21			Saturday 22			Sunday 23			Monday 24			Tuesday 25			Wednesday 26
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	cloudy	some clouds	light rain	light rain	heavy rain	light rain	mod. rain	rain shwrs	rain shwrs	light rain	cloudy	light rain	heavy rain	light rain	light rain	light rain
km/h	SSW	SSW	S	SSW	SW	SSW	SSW	WSW	WSW	SW	SW	S	ESE	SE	SE	S	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	0.4	12	5	7	1.5	1.7	0.1	—	0.2	19	4	4	1.7
max°C	8	8	8	10	10	9	7	5	2	4	3	2	5	4	3	5	6	6
min°C	7	7	8	9	9	8	6	2	2	2	3	2	3	3	2	4	5	6
chill°C	7	6	8	8	8	6	1	-1	-1	1	1	2	2	0	-1	1	2	4

Freezing level (m)	2050	1950	2300	2350	2150	2000	1500	1100	850	800	900	800	1000	1200	1450	2050	2000	1950
Cloud base (m)	2250	2050	650	750	900	900	450	450	450	450	550	600	600	1950	400	400	400	400

	7:20	—	—	7:22	—	—	7:22	—	—	7:24	—	—	7:26	—	—	7:26	—	—
	—	4:23	—	—	4:22	—	—	4:22	—	—	4:22	—	—	4:21	—	—	4:20	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 24mm), heaviest during Sun morning. Very mild (max 10°C on Sat morning, min 2°C on Sun afternoon). Winds increasing (calm on Fri morning, fresh winds from the SW by Sun morning).

Mount Si Weather (Days 3-6):

Heavy rain (total 33mm), heaviest during Tue night. Mild temperatures (max 6°C on Wed afternoon, min 2°C on Mon morning). 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	10° C	Dry	Calm (0 kph at 267).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 3 hours ago	6° C	Dry and cloudy.	Light winds from the SE (7 kph at 140).	16 km Low: overcast
Auburn 39 km SW 119m alt. 48 minutes ago	9° C	Dry	Calm (0 kph at 196).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	0° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
SHIP7318 42 km WSW 15m alt. 4 hours ago			Light winds from the SE (13 kph at 130).	- km
SHIP5714 42 km WSW 15m alt. 4 hours ago			Light winds from the SE (13 kph at 130).	- km
SHIP3407 42 km WSW 3m alt. 4 hours ago	6° C		Light winds from the SE (13 kph at 130).
SHIP5102 42 km WSW 15m alt. 4 hours ago			Light winds from the SE (13 kph at 130).	- km
SHIP2452 42 km WSW 15m alt. 4 hours ago			Light winds from the SE (13 kph at 130).	- 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.