– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 17 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 17 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 24°C on Mon morning, min 11°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 30°C on Tue afternoon, min 20°C on Mon night). Wind will be generally light.
	Fri 17		Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	clear	clear	some clouds	clear	clear
Cloud base (m)	850		850	1650				9500		7300	7700	7250	6500	5100	5750	5750	5150
km/h	WNW	SE	WNW	NW	NE	NW	NW	E	WNW	WNW	ESE	NW	NW	SE	WNW	WNW	SSE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	19	18	17	21	18	19	23	20	24	28	25	27	30	26	26	29	26
min °C	19	11	14	20	12	15	22	17	20	27	20	24	29	21	23	28	20
chill °C	19	11	14	20	12	15	22	17	20	27	20	24	29	21	23	28	20

Freezing level m	3850	3800	3550	3700	4100	4000	4300	4450	4550	4550	4600	4700	4800	4700	4600	4650	4550

	—	—	5:26	—	—	5:28	—	—	5:30	—	—	5:31	—	—	5:31	—	—
	—	8:58	—	—	8:57	—	—	8:55	—	—	8:54	—	—	8:53	—	—	8:52

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 24°C on Mon morning, min 11°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 30°C on Tue afternoon, min 20°C on Mon 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. 2 hours ago	19° C	Dry	Calm (2 kph at 234).
Renton Airport 36 km WSW 218m alt. 2 hours ago	22° C	Dry and cloudy.	Light winds from the SW (9 kph at 220).	16 km Low: overcast
Auburn 39 km SW 119m alt. 59 minutes ago	23° C	Dry	Calm (0 kph at 91).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	11° C	Dry and partly cloudy.	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: broken
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	22° C	Dry and partly cloudy.	Light winds from the SW (9 kph at 220).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	20° C	Dry and partly cloudy.	Light winds from the SSW (13 kph at 200).	16 km Low: broken
Snohomish 49 km NW 196m alt. 21 minutes ago	16° C	Dry	Calm (2 kph at 215).
Seattle 49 km WSW 100m alt. 32 minutes ago		-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	15° C		Light winds from the NE (17 kph at 40).
BUOY-46120 57 km W 3m alt. 1 hour ago	15° C		(22 kph at —)

* 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.