– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Tue 21 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Tue 21 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 32°C on Wed afternoon, min 16°C on Thu night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 13mm), heaviest on Sun afternoon. Warm (max 22°C on Fri night, min 11°C on Sun night). Wind will be generally light.
		Wednesday 22			Thursday 23			Friday 24			Saturday 25			Sunday 26			Monday 27
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	some clouds	rain shwrs	light rain	light rain	rain shwrs	clear	clear	clear
Cloud base (m)	8900		8650	5100								1850	400	650	400	550			8900
km/h	ESE	WNW	NW	WSW	W	W	SSE	W	W	S	W	W	SW	SW	SW	WSW	WNW	WNW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.2	0.1	0.3	—	—	—	—	—	—	4	0.5	4	5	—	—	—
max °C	27	30	32	27	21	23	21	22	26	22	18	20	16	13	13	13	16	21	17
min °C	22	26	32	18	18	23	16	18	24	14	16	17	13	13	13	11	12	19	13
chill °C	22	26	32	18	18	23	16	18	24	14	16	17	12	12	12	11	12	19	13

Freezing level m	4650	4750	4800	4700	4550	4450	4400	4350	4150	3900	3500	3100	3400	3000	2900	3300	3850	3900	3950

	—	5:31	—	—	5:33	—	—	5:33	—	—	5:35	—	—	5:35	—	—	5:37	—	—
	—	—	—	8:52	—	—	8:52	—	—	8:51	—	—	8:50	—	—	8:49	—	—	8:47

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 32°C on Wed afternoon, min 16°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 13mm), heaviest on Sun afternoon. Warm (max 22°C on Fri night, min 11°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. 3 hours ago	23° C	Dry	Calm (0 kph at 71).
Renton Airport 36 km WSW 218m alt. 2 hours ago	24° C	Clear	Light winds from the NW (13 kph at 320).	16 km
Auburn 39 km SW 119m alt. 47 minutes ago	18° C	Dry	Calm (0 kph at 169).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	22° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	24° C	Clear	Wind obs. (6 kph from 270 degs) was rejected.	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	24° C	Dry and partly cloudy.	Light winds from the NNE (19 kph at 30).	16 km Low: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	15° C	Dry	Calm (0 kph at 215).
Seattle 49 km WSW 100m alt. 2 hours ago	28° C	-
BUOY-WPOW1 55 km W 3m alt. 59 minutes ago	18° C		Light winds from the NE (9 kph at 50).

* 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.