– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 09 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 09 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 23°C on Tue afternoon, min 12°C on Sun night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 26°C on Fri afternoon, min 14°C on Wed morning). Wind will be generally light.
	Sunday 9			Monday 10			Tuesday 11			Wednesday 12			Thursday 13			Friday 14
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	some clouds	rain shwrs	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)	9050			9450	8500					650	850							6500
km/h	NW	NW	NNE	NW	NW	NE	NW	NW	NNE	NW	NNW	ENE	WNW	NW	E	WNW	NW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.2	—	—	—	—	—	—	—
max °C	19	22	18	18	22	19	19	23	18	17	19	18	20	25	21	23	26	22
min °C	16	22	12	15	21	13	15	22	13	14	18	14	17	24	17	19	25	15
chill °C	16	22	12	15	21	13	15	22	13	14	18	14	17	24	17	19	25	15

Freezing level m	4100	4100	4050	4050	4050	4200	3900	3900	3950	3600	3650	3900	3750	4000	3900	3750	3900	3850

	5:54	—	—	5:54	—	—	5:56	—	—	5:58	—	—	5:58	—	—	6:01	—	—
	—	—	8:29	—	—	8:27	—	—	8:25	—	—	8:23	—	—	8:22	—	—	8:21

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 23°C on Tue afternoon, min 12°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 26°C on Fri afternoon, min 14°C on Wed 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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Renton 30 km WSW 160m alt. 1 hour ago	23° C	Dry	Calm (3 kph at 296).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (5 kph at 101).
Renton Airport 36 km WSW 218m alt. 3 hours ago	21° C	Clear	Calm (0 kph at 0).	13 km
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (2 kph at 224).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	18° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	21° C	-	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	18° C	Dry and partly cloudy.	Light winds from the N (9 kph at 1).	16 km Low: scattered
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 56 minutes ago	22° C	Dry	Wind obs. (8 kph from 238 degs) was rejected.
Seattle 49 km WSW 100m alt. 45 minutes ago	30° C	-	Wind obs. (6 kph from 169 degs) was rejected.

* 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.