– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Tue 18 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Tue 18 Nov 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 10°C on Wed morning, min 3°C on Tue night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 14mm), heaviest on Sun night. Mild temperatures (max 9°C on Sun night, min 3°C on Mon afternoon). Winds increasing (calm on Sat night, fresh winds from the SW by Sun night).
		Wednesday 19			Thursday 20			Friday 21			Saturday 22			Sunday 23			Monday 24
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	cloudy	light rain	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	light rain	light rain	rain shwrs	rain shwrs	cloudy	cloudy	light rain	light rain	light rain	rain shwrs
km/h	ESE	ESE	ESE	ESE	SSE	WNW	ESE	SW	SSW	SW	W	WSW	SE	S	SSW	SSW	SW	NW	NNE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.3	0.2	0.2	—	—	—	2	1.2	0.8	0.1	—	—	4	4	1.4	0.8
max°C	4	10	7	6	6	6	5	8	7	8	8	7	6	8	8	9	5	4	3
min°C	3	7	6	5	5	6	4	7	7	8	8	7	5	8	8	6	5	3	1
chill°C	1	4	4	4	5	6	4	7	6	7	6	6	5	7	6	3	2	3	1

Freezing level (m)	1300	2150	2150	1800	1350	1350	1350	1850	2100	2200	2000	1650	1700	2050	2100	1900	1200	1100	900
Cloud base (m)	650	6700	6000	1550	650	700	900	1950	2200	500	450	450	2600	2250	1900	700	450	500	550

	—	7:16	—	—	7:18	—	—	7:20	—	—	7:22	—	—	7:22	—	—	7:24	—	—
	—	—	4:25	—	—	4:24	—	—	4:23	—	—	4:22	—	—	4:22	—	—	4:22	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 10°C on Wed morning, min 3°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 14mm), heaviest on Sun night. Mild temperatures (max 9°C on Sun night, min 3°C on Mon afternoon). Winds increasing (calm on Sat night, fresh winds from the SW by Sun night).

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. 2 hours ago	3° C	Dry	Calm (0 kph at 264).
Renton Airport 36 km WSW 218m alt. 2 hours ago	4° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: few Mid: overcast
Auburn 39 km SW 119m alt. 56 minutes ago	6° C	Dry	Calm (0 kph at 121).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-2° C	-	Calm (0 kph at 0).	0.0 km
SHIP8606 42 km WSW 3m alt. 3 hours ago	7° C		Calm (4 kph at 10).
SHIP9009 42 km WSW 3m alt. 2 hours ago	7° C		Calm (2 kph at 350).
SHIP1848 42 km WSW 15m alt. 3 hours ago			Calm (2 kph at 290).	- km
SHIP3388 42 km WSW 15m alt. 3 hours ago			Calm (4 kph at 10).	- km
SHIP6079 42 km WSW 3m alt. 2 hours ago	6° C		Calm (2 kph at 60).
SHIP3703 42 km WSW 15m alt. 3 hours ago			Calm (4 kph at 10).	- 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.