– Lat/Long: 47.51° N 121.74° W

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

Issued: 10 am Sun 19 Jul 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 29°C on Tue afternoon, min 15°C on Sun morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 30°C on Wed afternoon, min 11°C on Fri night). Wind will be generally light.
	Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	cloudy	rain shwrs	rain shwrs	clear	clear	clear
Cloud base (m)			9500		6900		6350	5550	4300	4500	6950	9000	5200
km/h	NW	NW	E	ESE	WNW	ESE	W	NW	E	NW	NW	ESE	WNW	W	S	SW	WSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	0.2	0.1	—	—	—
max °C	18	23	20	23	28	25	27	29	25	27	30	26	26	27	23	20	22	18
min °C	15	22	16	19	27	21	24	29	21	23	29	21	23	26	16	17	22	11
chill °C	15	22	16	19	27	21	24	29	21	23	29	21	23	26	16	17	22	10

Freezing level m	4050	4250	4450	4500	4550	4500	4550	4700	4650	4500	4650	4500	4450	4300	4050	3600	3550	3750

	5:28	—	—	5:30	—	—	5:31	—	—	5:31	—	—	5:33	—	—	5:33	—	—
	—	—	8:55	—	—	8:54	—	—	8:53	—	—	8:52	—	—	8:52	—	—	8:51

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 29°C on Tue afternoon, min 15°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 30°C on Wed afternoon, min 11°C on Fri 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. 1 hour ago	24° C	Dry	Wind obs. (6 kph from 300 degs) was rejected.
Black Diamond 32 km SSW 192m alt. 50 minutes ago		-	Calm (2 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	23° C	Clear	Light winds from the NNW (19 kph at 330).	16 km
Auburn 39 km SW 119m alt. 54 minutes ago	36° C	Dry	Calm (0 kph at 89).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	21° C	Clear	Wind obs. (7 kph from 1 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	23° C	Clear	Light winds from the N (9 kph at 1).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	24° C	-	Light winds from the NW (17 kph at 320).	16 km Low: few
Snohomish 49 km NW 196m alt. 2 hours ago	23° C	Dry	Calm (5 kph at 284).
Seattle 49 km WSW 100m alt. 32 minutes ago	28° C	-	Light winds from the NNE (19 kph at 14).
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	17° C		Moderate winds from the NNE (24 kph at 30).

* 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.