– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 am Tue 20 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Tue 20 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 13°C on Tue afternoon, min 1°C on Thu night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Freeze-thaw conditions (max 10°C on Sat afternoon, min 0°C on Fri morning). Wind will be generally light.
	Tuesday 20			Wednesday 21			Thursday 22			Friday 23			Saturday 24			Sunday 25
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	rain shwrs	clear	clear	some clouds	some clouds	clear	clear	clear
Cloud base (m)	6900						8800		850	900	850		8900		6000	8150
km/h	ESE	ESE	SSE	SSW	SW	SW	NNW	NW	NNW	NNW	N	NNE	NE	NNE	ENE	ESE	ESE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.1	—	—	—	—	—	—	—
max °C	11	13	12	13	13	11	8	7	4	1	3	5	9	10	9	9	10	9
min °C	9	12	12	12	12	9	7	5	1	0	1	3	6	9	9	8	10	9
chill °C	7	11	11	12	11	9	5	3	-5	-5	-3	0	6	9	8	8	8	7

Freezing level m	3100	3200	3200	3150	3150	3100	2850	2350	1650	1350	2150	2850	3200	3300	3400	3450	3500	3600

	7:31	—	—	7:33	—	—	7:35	—	—	7:35	—	—	7:37	—	—	7:39	—	—
	—	6:09	—	—	6:07	—	—	6:06	—	—	6:05	—	—	6:02	—	—	6:00	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 13°C on Tue afternoon, min 1°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Freeze-thaw conditions (max 10°C on Sat afternoon, min 0°C on Fri 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
Renton Airport 36 km WSW 218m alt. 2 hours ago	9°C	Dry and cloudy.	Light winds from the N.(Wind varies from 006 to 010 degs) (7 kph at 10).	16 km Low: overcast
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	2°C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 1 hour ago	8°C	Mist -.	Light winds from the NNE (19 kph at 20).	10 km Low: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	10°C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	11°C		Moderate winds from the NNE (28 kph at 20).
BUOY-TCNW1 57 km SW 3m alt. 1 hour ago
BUOY-TCMW1 57 km SW 3m alt. 1 hour ago			Light winds from the ENE (9 kph at 60).
Pierce County Airport - Thun Field - Puyallup (Washington) 61 km SSW 164m alt. 2 hours ago	7°C	Light rain .	Calm (0 kph at 0).	0 km Low: overcast
Everett Airport 61 km WNW 218m alt. 1 hour ago	8°C	Dry and cloudy.	Light winds from the N.(Wind varies from 003 to 007 degs) (9 kph at 0).	14 km Low: overcast

* 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.