– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 20 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 20 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 21°C on Mon night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 26°C on Thu afternoon, min 12°C on Sat night). Wind will be generally light.
	Mon 20		Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Saturday 25
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	some clouds	rain shwrs	rain shwrs	clear	clear	clear	clear	light rain	rain shwrs	rain shwrs
Cloud base (m)	6950		6850	5550	4550		5050	6850	5300						550	600	1700
km/h	WNW	ESE	NW	NW	E	NW	NW	ENE	W	W	SSW	WNW	W	S	WSW	WSW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	0.5	0.2	—	—	—	—	0.1	0.4	0.2
max °C	27	25	28	31	27	28	32	27	24	26	22	20	24	21	14	17	16
min °C	27	21	24	31	22	25	31	22	22	26	15	17	23	13	14	15	12
chill °C	27	21	24	31	22	25	31	22	22	26	15	17	23	13	14	15	12

Freezing level m	4450	4400	4500	4700	4650	4600	4750	4700	4450	4250	3950	4100	4200	4000	3500	3750	4000

	—	—	5:31	—	—	5:31	—	—	5:33	—	—	5:33	—	—	5:35	—	—
	—	8:54	—	—	8:53	—	—	8:52	—	—	8:52	—	—	8:51	—	—	8:50

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 32°C on Wed afternoon, min 21°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 26°C on Thu afternoon, min 12°C on Sat 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	Calm (0 kph at 270).
Renton Airport 36 km WSW 218m alt. 3 hours ago	26° C	Clear	Light winds from the N (6 kph at 350).	16 km
Auburn 39 km SW 119m alt. 45 minutes ago	26° C	Dry	Calm (5 kph at 212).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	20° C	-	Calm (0 kph at 0).	14 km Low: few
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	26° C	Clear	Light winds from the WNW (6 kph at 300).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	26° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: scattered Mid: broken
Snohomish 49 km NW 196m alt. 44 minutes ago	18° C	Dry	Calm (0 kph at 193).
Seattle 49 km WSW 100m alt. 1 hour ago	26° C	-
BUOY-WPOW1 55 km W 3m alt. 2 hours ago	20° C		Light winds from the NE (13 kph at 40).
BUOY-TCNW1 57 km SW 3m alt. 2 hours 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.