– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 pm Sun 11 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 pm Sun 11 Jan Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 10mm), heaviest on Sun night. Very mild (max 15°C on Tue morning, min 8°C on Sun night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 14°C on Fri morning, min 7°C on Wed night). Wind will be generally light.
		Monday 12			Tuesday 13			Wednesday 14			Thursday 15			Friday 16			Saturday 17
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	light rain	light rain	rain shwrs	clear	some clouds	clear	clear	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	SSW	SW	SW	SW	E	NE	SE	WNW	WNW	N	ENE	NE	ESE	ESE	ESE	ESE	ESE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	8	1	0.5	0.6	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	10	11	11	11	15	14	11	12	10	9	12	11	8	14	12	8	14	12	9
min °C	8	10	11	11	12	12	9	10	9	7	10	9	8	11	9	8	11	9	8
chill °C	6	9	10	10	12	12	9	10	9	7	10	9	7	10	8	7	11	9	8

Freezing level m	2550	2650	2900	3050	3450	3650	3700	3250	3100	3450	3400	3500	3550	3700	3750	3800	3800	3850	3900
Cloud base (m)	450	650	550	600		7200			600	550							9150

	—	7:50	—	—	7:50	—	—	7:50	—	—	7:48	—	—	7:48	—	—	7:48	—	—
	—	—	4:38	—	—	4:39	—	—	4:42	—	—	4:43	—	—	4:44	—	—	4:45	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 10mm), heaviest on Sun night. Very mild (max 15°C on Tue morning, min 8°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 14°C on Fri morning, min 7°C on Wed 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. 42 minutes ago	11° C	Light rain.	Calm (5 kph at 169).
Black Diamond 32 km SSW 192m alt. 1 hour ago	9° C	Dry	Calm (3 kph at 157).
Renton Airport 36 km WSW 218m alt. 2 hours ago	10° C	Dry and cloudy.	Light winds from the S (9 kph at 170).	16 km Low: overcast
Auburn 39 km SW 119m alt. 48 minutes ago		-	Calm (0 kph at 313).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4° C	Light rain .	Calm (0 kph at 0).	10 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and cloudy.	Light winds from the SE (9 kph at 140).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and cloudy.	Light winds from the SSE (9 kph at 150).	16 km Low: overcast
Snohomish 49 km NW 196m alt. 2 hours ago	10° C	Light rain.	Moderate winds from the S (24 kph at 178).
BUOY-WPOW1 55 km W 3m alt. 51 minutes ago	10° C		Moderate winds from the S (24 kph at 180).
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.