– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 19 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 19 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 27°C on Thu afternoon, min 17°C on Wed morning). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 3mm), mostly falling on Sat morning. Warm (max 22°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light.
	Wednesday 19			Thursday 20			Friday 21			Saturday 22			Sunday 23			Monday 24
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	some clouds	some clouds	light rain	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds	clear	clear	clear	clear
Cloud base (m)							5000	5750	3450	650	700	800	550	900				9000
km/h	NW	NW	ENE	WNW	NW	E	NW	WNW	E	WSW	WSW	SW	WSW	NW	NNE	NW	NW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	0.4	1	0.9	0.4	0.2	—	—	—	—	—
max °C	21	25	21	23	27	23	24	27	22	18	18	16	15	19	16	19	22	18
min °C	17	23	17	19	26	19	21	27	18	17	18	13	13	17	12	15	22	16
chill °C	17	23	17	19	26	19	21	27	18	17	18	12	12	17	12	15	22	16

Freezing level m	4400	4350	4400	4450	4550	4550	4500	4500	4300	3900	3450	3300	3500	3600	3750	4050	4100	4100

	6:07	—	—	6:09	—	—	6:09	—	—	6:11	—	—	6:13	—	—	6:13	—	—
	—	—	8:12	—	—	8:09	—	—	8:07	—	—	8:07	—	—	8:05	—	—	8:02

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 27°C on Thu afternoon, min 17°C on Wed morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Sat morning. Warm (max 22°C on Mon afternoon, min 12°C on Sun 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
Renton 30 km WSW 160m alt. 47 minutes ago	22° C	Dry	Calm (5 kph at 333).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Wind obs. (8 kph from 39 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	20° C	Clear	Wind obs. (7 kph from 360 degs) was rejected.	16 km
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (2 kph at 80).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	19° C	Clear	Light winds from the SW (6 kph at 230).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	18° C	-	Light winds from the W (9 kph at 280).	16 km Low: few Mid: few High: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 2 hours ago	21° C	Dry	Wind obs. (10 kph from 225 degs) was rejected.
Seattle 49 km WSW 100m alt. 47 minutes ago	31° C	-	Light winds from the SW (14 kph at 231).
SHIP171 51 km W -m alt. 51 minutes ago	18° C	No report.	Light winds from the SW (7 kph at 220).

* 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.