– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Sun 07 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Sun 07 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 68mm), heaviest during Mon night. Very mild (max 11°C on Mon afternoon, min 4°C on Mon night). Mainly strong winds.									Days 4–6 Weather Summary Heavy rain (total 30mm), heaviest during Wed morning. Very mild (max 13°C on Fri morning, min 5°C on Wed night). Wind will be generally light.
	Sunday 7			Monday 8			Tuesday 9			Wednesday 10			Thursday 11			Friday 12
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	rain shwrs	light rain	heavy rain	heavy rain	heavy rain	rain shwrs	light rain	mod. rain	heavy rain	light rain	rain shwrs	light rain	mod. rain	light rain	rain shwrs	rain shwrs	rain shwrs
km/h	S	WSW	SW	SW	SW	W	SSW	S	WSW	WSW	SW	SW	SSW	SW	WSW	SW	SSW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	8	3	3	11	11	22	0.1	3	7	13	4	0.3	2	6	3	1.4	0.7	0.4
max°C	8	8	7	8	11	11	6	5	10	7	6	6	7	9	11	13	11	11
min°C	6	7	7	7	11	4	5	5	7	6	6	5	6	7	10	12	11	9
chill°C	4	3	4	6	8	3	5	5	3	4	4	5	5	5	9	11	10	9

Freezing level (m)	1850	1700	1450	1650	2450	1950	1300	1300	2350	1550	1350	1350	2000	2800	2750	3100	3350	3300
Cloud base (m)	400	450	600	900	400	400	650	1750	400	400	450	450	2100	500	450	500	1550	1000

	7:39	—	—	7:41	—	—	7:41	—	—	7:43	—	—	7:43	—	—	7:45	—	—
	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—	—	4:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 68mm), heaviest during Mon night. Very mild (max 11°C on Mon afternoon, min 4°C on Mon night). Mainly strong winds.

Mount Si Weather (Days 3-6):

Heavy rain (total 30mm), heaviest during Wed morning. Very mild (max 13°C on Fri morning, min 5°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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 329).
Black Diamond 32 km SSW 192m alt. 1 hour ago	13° C	Dry	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	9° C	-	Light winds from the SE (6 kph at 140).	0.0 km
Auburn 39 km SW 119m alt. 39 minutes ago	7° C	Dry	Calm (0 kph at 154).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	0° C	Light snow.	Calm (0 kph at 0).	0 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Light rain .	Light winds from the ESE (9 kph at 120).	3 km Mid: scattered High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	8° C	Moderate rain .	Light winds from the E (15 kph at 100).	3 km Mid: broken High: overcast
Snohomish 49 km NW 196m alt. 2 hours ago	10° C	Dry	Light winds from the SE (14 kph at 127).
Seattle 49 km WSW 100m alt. 33 minutes ago	13° C	-
BUOY-WPOW1 55 km W 3m alt. 39 minutes ago	9° C		Light winds from the SE (18 kph at 140).

* 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.