– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Fri 19 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Fri 19 Jun 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 25°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 26°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light.
		Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25
	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	clear	clear	clear	clear	some clouds	some clouds	clear	clear	clear	clear	clear	some clouds	some clouds	cloudy
km/h	SSW	WSW	W	ENE	NW	NW	ENE	WNW	NW	E	WNW	NW	E	W	W	ENE	WNW	WNW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	21	16	20	18	17	22	19	23	25	22	24	26	23	18	22	20	17	21	18
min °C	11	13	18	10	13	20	14	19	25	18	21	26	13	15	21	11	14	20	12
chill °C	10	12	18	10	13	20	14	19	25	18	21	26	13	15	21	11	14	20	12

Freezing level m	3800	3550	3500	3550	3350	3550	3600	3600	3900	3850	3700	4000	3850	3550	3650	3950	4000	4100	3800
Cloud base (m)							9150	9000		3700	6700			8200				6800

	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 25°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 26°C on Tue afternoon, min 11°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
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	10° C	Dry	Calm (0 kph at 319).
Renton 30 km WSW 160m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 236).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (2 kph at 254).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18° C	Clear	Light winds from the S (19 kph at 180).	16 km
Auburn 39 km SW 119m alt. 59 minutes ago	24° C	Dry	Calm (0 kph at 280).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	12° C	Clear	Light winds from the W (11 kph at 280).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	17° C	Clear	Light winds from the S (9 kph at 190).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	15° C	Clear	Light winds from the SSW (19 kph at 210).	16 km
Seattle 49 km WSW 100m alt. 57 minutes ago		-
SHIP9699 54 km W 15m alt. 2 hours ago			Light winds from the S (13 kph at 170).	- km

* 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.