– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Sun 11 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Sun 11 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 18mm), heaviest on Sun afternoon. Very mild (max 11°C on Tue morning, min 3°C on Sun morning). Winds decreasing (near gales from the SW on Sun afternoon, calm by Tue morning).									Days 4–6 Weather Summary Mostly dry. Very mild (max 13°C on Fri morning, min 6°C on Wed afternoon). Wind will be generally light.
	Sunday 11			Monday 12			Tuesday 13			Wednesday 14			Thursday 15			Friday 16
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	mod. rain	mod. rain	light rain	light rain	rain shwrs	clear	some clouds	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	clear
km/h	SW	SSW	SW	SW	WSW	WSW	E	W	SSW	SW	WSW	NNW	N	ESE	ESE	E	ENE	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	2	6	7	1.9	0.6	0.2	—	—	—	—	—	—	—	—	—	—	—	—
max °C	5	5	6	7	8	8	11	11	11	9	7	9	10	10	11	13	13	11
min °C	3	5	6	7	8	7	9	10	9	7	6	6	9	10	10	12	12	11
chill °C	-3	-1	1	2	3	3	9	10	7	4	4	4	7	9	8	12	12	11

Freezing level m	2050	2450	2450	2600	2800	2850	3350	3600	3600	3200	3200	3250	3450	3550	3550	3750	3900	3900
Cloud base (m)	600	450	500	700	600	650	1000	7200				550

	7:52	—	—	7:50	—	—	7:50	—	—	7:50	—	—	7:48	—	—	7:48	—	—
	—	4:37	—	—	4:38	—	—	4:39	—	—	4:42	—	—	4:43	—	—	4:44	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 18mm), heaviest on Sun afternoon. Very mild (max 11°C on Tue morning, min 3°C on Sun morning). Winds decreasing (near gales from the SW on Sun afternoon, calm by Tue morning).

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 13°C on Fri morning, min 6°C on Wed afternoon). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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. 2 hours ago	7° C	Dry	Calm (0 kph at 33).
Black Diamond 32 km SSW 192m alt. 2 hours ago	11° C	Dry	Wind obs. (13 kph from 360 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	7° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken Mid: broken
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 317).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	0° C	Moderate rain .	Calm (0 kph at 0).	14 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	7° C	Dry and cloudy.	Light winds from the ESE (6 kph at 110).	14 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	6° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: few Mid: broken High: broken
Snohomish 49 km NW 196m alt. 2 hours ago	6° C	Dry	Calm (3 kph at 25).
Seattle 49 km WSW 100m alt. 57 minutes ago		-	Wind obs. (10 kph from 13 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	8° C		Light winds from the S (18 kph at 180).

* 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.