– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 26 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 26 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 22°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 25°C on Fri afternoon, min 12°C on Wed night). Wind will be generally light.
	Sunday 26			Monday 27			Tuesday 28			Wednesday 29			Thursday 30			Friday 31
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	some clouds	some clouds	clear	clear	clear	rain shwrs	rain shwrs	rain shwrs	some clouds	some clouds	clear	clear	some clouds	clear	clear	clear	clear
Cloud base (m)	850	1600	2900		2300		950	950	800	700	6550			6800				9650
km/h	WSW	WNW	S	WSW	WSW	SE	WSW	WNW	E	NW	NW	E	WNW	WNW	SE	WNW	WNW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	—	—	—	—	0.1	0.2	0.3	—	—	—	—	—	—	—	—	—
max °C	17	20	17	18	22	19	17	20	17	17	21	18	18	21	18	21	25	21
min °C	15	19	13	15	21	13	15	17	12	14	20	12	15	21	13	16	23	14
chill °C	15	19	13	15	21	13	15	17	12	14	20	12	15	21	13	16	23	14

Freezing level m	3500	3250	3250	3450	3650	3900	3600	3750	4050	3950	3850	4100	4250	4100	4350	4500	4700	4600

	5:35	—	—	5:37	—	—	5:39	—	—	5:39	—	—	5:41	—	—	5:43	—	—
	—	—	8:49	—	—	8:47	—	—	8:45	—	—	8:45	—	—	8:44	—	—	8:42

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Fri afternoon, min 12°C on Wed 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 Airport 36 km WSW 218m alt. 2 hours ago	19° C	Dry and partly cloudy.	Light winds from the SSW (9 kph at 210).	16 km Low: broken Mid: broken
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	16° C	Clear	Calm (0 kph at 0).	16 km
SHIP6824 43 km W 3m alt. 2 hours ago	24° C
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	20° C	Dry and cloudy.	Light winds from the SSW (15 kph at 200).	16 km Low: few Mid: broken High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	20° C	Dry and cloudy.	Light winds from the SSW (17 kph at 200).	16 km Low: scattered Mid: broken High: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	20° C	Dry and cloudy.	Light winds from the SSW (17 kph at 200).	16 km Low: scattered Mid: broken High: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Seattle 49 km WSW 100m alt. 1 hour ago	29° C	-	Light winds from the S (14 kph at 184).
BUOY-WPOW1 55 km W 3m alt. 51 minutes ago	17° C		Moderate winds from the S (24 kph at 170).
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.