– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Thu 18 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Thu 18 Jun 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 24°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 27°C on Tue afternoon, min 14°C on Sun morning). Wind will be generally light.
	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	some clouds	clear	clear	clear	clear	some clouds
km/h	NW	NW	ESE	W	W	SSW	WSW	W	ENE	WNW	NW	E	WSW	NW	E	NW	NW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	19	22	19	22	24	22	15	19	18	18	23	20	24	26	23	25	27	22
min °C	15	22	16	19	24	11	13	18	11	14	21	16	20	26	18	22	26	14
chill °C	15	22	16	19	24	10	12	18	11	14	21	16	20	26	18	22	26	14

Freezing level m	4150	4200	4150	4050	4100	3900	3550	3650	3650	3400	3700	3750	3700	4000	3950	4000	4150	4000
Cloud base (m)				5450	5100										8800	8900	7250	8800

	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 24°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 27°C on Tue afternoon, min 14°C on Sun morning). 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	8° C	Dry	Calm (0 kph at 251).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	4° C	-	Calm (0 kph at 278).
Renton 30 km WSW 160m alt. 42 minutes ago	11° C	Dry	Calm (0 kph at 40).
Black Diamond 32 km SSW 192m alt. 53 minutes ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 31 minutes ago	10° C	Dry	Calm (3 kph at 97).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	4° C	Dry	Calm (0 kph at 335).
Auburn 39 km SW 119m alt. 30 minutes ago	20° C	Dry	Calm (0 kph at 278).
SHIP5727 42 km WSW 3m alt. 2 hours ago	17° C		Calm (5 kph at 330).
SHIP5322 42 km WSW 15m alt. 2 hours ago			Calm (6 kph at 330).	- 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.