– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Thu 11 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Thu 11 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 19°C on Sun morning, min 7°C on Thu night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Warm (max 20°C on Sun afternoon, min 4°C on Wed morning). Wind will be generally light.
	Thu 11		Friday 12			Saturday 13			Sunday 14			Monday 15			Tuesday 16
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	clear	light rain	rain shwrs	clear
km/h	NW	NNW	NNW	NNW	ENE	ESE	NNW	ESE	NNE	NNW	NNW	NNW	W	SW	SW	W	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1	0.1	—
max °C	11	10	8	11	13	16	17	17	19	20	20	20	20	17	9	12	11
min °C	10	7	7	10	11	14	17	16	18	20	18	19	19	9	8	9	5
chill °C	9	4	4	8	11	14	17	16	18	20	18	19	19	6	5	8	2

Freezing level m	3250	3350	3300	3450	3200	3500	3800	3900	4100	4350	4650	4600	4600	4050	4100	4100	3700
Cloud base (m)		2100	8850	9000				8950	9550			6650	6150		550	700	400

	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	9:02	—	—	9:04	—	—	9:04	—	—	9:05	—	—	9:05	—	—	9:06

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 19°C on Sun morning, min 7°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 20°C on Sun afternoon, min 4°C on Wed morning). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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. 2 hours ago	13° C	Dry	Calm (0 kph at 352).
Snoqualmie Pass 30 km ESE 824m alt. 2 hours ago	12° C	-	Calm (0 kph at 345).
Renton 30 km WSW 160m alt. 1 hour ago	18° C	Dry	Calm (0 kph at 8).
Renton Airport 36 km WSW 218m alt. 3 hours ago	21° C	Clear	Light winds from the NNW (15 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	9° C	Dry	Calm (2 kph at 291).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 138).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	12° C	Clear	Light winds from the N (11 kph at 1).	16 km
SHIP4847 42 km WSW 15m alt. 4 hours ago				- km
SHIP3808 42 km WSW 15m alt. 2 hours ago				- km
SHIP3863 42 km WSW 15m alt. 4 hours ago				- 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.