– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 18 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 18 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 29°C on Tue afternoon, min 12°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 28°C on Wed afternoon, min 13°C on Thu night). Wind will be generally light.
		Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)				9700		7100		6900	5700	4100	5350	6000
km/h	NE	NW	NW	E	ENE	W	ESE	NW	NW	E	NW	WNW	SSE	W	W	SSW	WSW	W	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	17	19	23	20	23	27	25	26	29	25	26	28	25	23	27	22	19	23	21
min °C	12	15	22	16	20	27	20	23	28	20	23	28	18	20	26	13	15	22	12
chill °C	12	15	22	16	20	27	20	23	28	20	23	28	18	20	26	13	15	22	12

Freezing level m	4150	4100	4300	4450	4500	4600	4500	4500	4650	4600	4500	4550	4350	4100	4100	3850	3900	4000	3950

	—	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 12°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 28°C on Wed afternoon, min 13°C on Thu 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. 50 minutes ago	14° C	Dry	Calm (0 kph at 13).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the N (11 kph at 350).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	19° C	Dry	Calm (0 kph at 250).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	8° C	Mist -.	Wind obs. (7 kph from 230 degs) was rejected.	6 km Low: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the N (6 kph at 1).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the N (19 kph at 10).	16 km
Snohomish 49 km NW 196m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 163).
Seattle 49 km WSW 100m alt. 1 hour ago		-
BUOY-WPOW1 55 km W 3m alt. 50 minutes ago	14° C		Light winds from the NNE (8 kph at 20).
BUOY-TCNW1 57 km SW 3m alt. 1 hour ago

* 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.