– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Thu 08 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Thu 08 Jan Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 13mm), heaviest on Sat night. Mild temperatures (max 7°C on Sat morning, min 1°C on Thu morning). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 33mm), heaviest during Sun night. Very mild (max 12°C on Tue morning, min 6°C on Sun morning). Wind will be generally light.
	Thursday 8			Friday 9			Saturday 10			Sunday 11			Monday 12			Tuesday 13
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	light rain	light rain	rain shwrs	some clouds	cloudy	cloudy	light rain	mod. rain	mod. rain	mod. rain	heavy rain	light rain	light rain	rain shwrs	some clouds	clear	clear
km/h	WSW	WSW	WSW	SSW	SE	S	SSE	S	SSE	SSE	S	SW	SW	SW	S	ESE	ESE	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	1.5	1	0.2	—	—	—	0.1	10	6	7	17	2	0.1	0.3	—	—	—
max °C	2	3	3	4	4	5	7	6	6	7	7	9	10	10	10	12	11	9
min °C	1	2	3	3	4	4	6	5	4	6	7	7	9	10	9	10	10	8
chill °C	-3	-2	1	3	4	3	5	4	2	4	5	5	8	9	9	10	10	8

Freezing level m	650	900	1000	1050	1800	2300	2200	2150	1900	2250	2300	2350	2500	2800	2950	3200	3550	3650
Cloud base (m)	450	450	550	450	500		2950	2650	450	450	450	450	550	450	550	600	450

	7:52	—	—	7:52	—	—	7:52	—	—	7:52	—	—	7:50	—	—	7:50	—	—
	—	4:34	—	—	4:35	—	—	4:36	—	—	4:37	—	—	4:38	—	—	4:39	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 13mm), heaviest on Sat night. Mild temperatures (max 7°C on Sat morning, min 1°C on Thu morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 33mm), heaviest during Sun night. Very mild (max 12°C on Tue morning, min 6°C on Sun 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	4° C	Dry	Calm (0 kph at 26).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (16 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 3 hours ago	7° C	Dry and cloudy.	Light winds from the S (17 kph at 180).	16 km Low: scattered Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 238).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-3° C	Light snow.	Light winds from the W.(Wind varies from 190 to 330 degs) (13 kph at 260).	0 km
SHIP5329 43 km W 3m alt. 3 hours ago
SHIP3561 43 km W 15m alt. 2 hours ago				- km
SHIP4080 43 km W 15m alt. 3 hours ago				- km
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	7° C	Dry and cloudy.	Light winds from the S (15 kph at 190).	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	6° C	Dry and cloudy.	Moderate winds from the SSW (22 kph at 210).	16 km Low: scattered Mid: overcast

* 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.