– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Tue 24 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Tue 24 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 8mm) at first, then becoming colder with a dusting of snow on Wed afternoon. Freeze-thaw conditions (max 11°C on Fri afternoon, min -1°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 2mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 9°C on Sat afternoon, min -1°C on Sun night). Wind will be generally light.
		Wednesday 25			Thursday 26			Friday 27			Saturday 28			Sunday 29			Monday 30
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	light snow	snow shwrs	rain shwrs	rain shwrs	clear	clear	cloudy	some clouds	cloudy	some clouds	rain shwrs	some clouds	light rain	rain shwrs	some clouds	cloudy	clear
km/h	SW	SW	SW	SW	SW	W	ESE	ESE	NNW	ENE	NW	WNW	SW	SW	WSW	WNW	NNW	NW	NNE
See all weather maps
cm	—	—	2	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	4	1.9	1.6	—	0.2	0.4	—	—	—	—	—	—	0.1	—	1.3	0.8	—	—	—
max °C	6	5	4	1	3	6	2	9	11	6	7	9	6	6	6	2	1	3	1
min °C	3	3	2	-1	-1	4	1	3	10	4	4	8	1	2	4	-1	-1	3	-2
chill °C	0	0	-3	-5	-1	4	-1	1	10	4	4	7	-2	0	1	-1	-3	0	-2

Freezing level m	1150	1050	750	400	800	1150	1100	1900	2200	2100	1600	1500	1050	1100	1100	400	650	800	150
Cloud base (m)	600	700	500	450	600	900	450	5450	5450	4900	750	850	850	700	650	400	450	1550	500

	—	7:00	—	—	6:58	—	—	6:56	—	—	6:54	—	—	6:52	—	—	6:50	—	—
	—	—	7:25	—	—	7:27	—	—	7:29	—	—	7:30	—	—	7:31	—	—	7:32	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 8mm) at first, then becoming colder with a dusting of snow on Wed afternoon. Freeze-thaw conditions (max 11°C on Fri afternoon, min -1°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 2mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 9°C on Sat afternoon, min -1°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. 1 hour ago	8° C	Dry	Calm (0 kph at 351).
Black Diamond 32 km SSW 192m alt. 56 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 1 hour ago	8° C	Dry and partly cloudy.	Light winds from the SSE (9 kph at 160).	16 km Low: broken Mid: broken
Auburn 39 km SW 119m alt. 2 hours ago	11° C	Dry	Calm (0 kph at 197).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Light rain .	Light winds from the N (11 kph at 1).	16 km Low: scattered Mid: broken High: broken
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and partly cloudy.	Light winds from the S (15 kph at 190).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	7° C	Dry and partly cloudy.	Moderate winds from the S (20 kph at 180).	16 km Low: few Mid: broken
SHIP8593 48 km SW 15m alt. 2 hours ago				- km
SHIP3163 48 km SW 15m alt. 2 hours ago				- km
SHIP7348 48 km SW 15m alt. 2 hours ago				- 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.