– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Mon 31 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 31 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 26mm), heaviest during Tue morning. Later becoming colder with a dusting of snow on Tue night. Mild temperatures (max 5°C on Mon morning, min 2°C on Tue morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 16°C on Sat afternoon, min 3°C on Thu morning). Wind will be generally light.
	Monday 31			Tuesday 1			Wednesday 2			Thursday 3			Friday 4			Saturday 5
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	mod. rain	mod. rain	mod. rain	rain shwrs	light snow	light rain	rain shwrs	light rain	rain shwrs	rain shwrs	clear	clear	clear	clear	some clouds	some clouds	clear
km/h	NW	WSW	WSW	WNW	WNW	SSW	SW	W	WSW	NNW	NW	ESE	SSE	NNW	ESE	SE	WNW	ESE
See all weather maps
cm	—	—	—	—	—	1.0	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.5	5	8	6	0.9	1.1	0.4	1.5	2	0.2	0.1	—	—	—	—	—	—	—
max°C	5	4	3	2	4	4	3	5	3	4	7	5	11	14	9	14	16	12
min°C	4	4	3	2	3	2	2	4	3	3	6	3	5	13	6	8	16	9
chill°C	4	2	0	2	1	-2	0	3	3	3	6	1	4	13	5	7	16	8

Freezing level (m)	1100	1100	950	950	1100	850	900	1150	950	1000	1250	1800	2100	2400	2700	3000	2900	3000
Cloud base (m)	850	400	400	400	400	400	400	550	400	450	750	800	6800	2000		6250	5650

	6:48	—	—	6:46	—	—	6:43	—	—	6:41	—	—	6:39	—	—	6:37	—	—
	—	7:34	—	—	7:36	—	—	7:37	—	—	7:38	—	—	7:39	—	—	7:40	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 26mm), heaviest during Tue morning. Later becoming colder with a dusting of snow on Tue night. Mild temperatures (max 5°C on Mon morning, min 2°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Sat afternoon, min 3°C on Thu 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. 2 hours ago	11° C	Dry	Calm (2 kph at 80).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 1 hour ago	10° C	Dry and partly cloudy.	Light winds from the SSW (13 kph at 200).	16 km Low: broken Mid: broken
Auburn 39 km SW 119m alt. 2 hours ago	14° C	Dry	Calm (2 kph at 223).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: few Mid: broken High: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Dry and cloudy.	Light winds from the SW (6 kph at 230).	16 km Low: few Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	8° C	Dry and partly cloudy.	Light winds from the WSW (11 kph at 240).	16 km Low: few Mid: scattered High: broken
Seattle 49 km WSW 100m alt. 48 minutes ago		-	Wind obs. (23 kph from 320 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	9° C		Fresh winds from the SSW (33 kph at 200).
Puyallup 57 km SSW 160m alt. 2 hours ago	7° C	Dry	Calm (3 kph at 218).

* 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.