– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Thu 30 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Thu 30 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 5mm), mostly falling on Sat afternoon. Very mild (max 18°C on Fri afternoon, min 6°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the WSW by Sat afternoon).											Days 5–7 Weather Summary Mostly dry. Warm (max 22°C on Wed morning, min 6°C on Sun night). Wind will be generally light.
	Thu 30		Friday 31			Saturday 1			Sunday 2			Monday 3			Tuesday 4
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)						550	500	500	600	900							9600
km/h	W	NNW	NW	W	SW	SW	WSW	SW	NW	NNW	NNW	NNE	NNW	ESE	ESE	NNW	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.3	3	1.1	0.7	0.2	—	—	—	—	—	—	—
max °C	15	14	17	18	18	10	10	9	7	11	9	10	14	16	18	20	19
min °C	13	12	14	18	12	9	9	6	6	8	6	8	13	14	17	19	19
chill °C	13	12	14	18	10	5	5	3	6	6	3	7	13	14	17	19	19

Freezing level m	4100	4450	4450	4600	4350	3350	2900	3000	3150	2950	2850	3300	3600	3600	3650	4100	4250

	—	—	5:43	—	—	5:43	—	—	5:45	—	—	5:46	—	—	5:48	—	—
	—	8:44	—	—	8:42	—	—	8:40	—	—	8:39	—	—	8:37	—	—	8:37

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 5mm), mostly falling on Sat afternoon. Very mild (max 18°C on Fri afternoon, min 6°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the WSW by Sat afternoon).

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 22°C on Wed morning, min 6°C on Sun night). 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 30 km WSW 160m alt. 1 hour ago	25° C	Dry	Calm (2 kph at 345).
Renton Airport 36 km WSW 218m alt. 2 hours ago	26° C	Clear	Light winds from the N (7 kph at 1).	16 km
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 346).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	18° C	Clear	Wind obs. (9 kph from 250 degs) was rejected.	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	26° C	Clear	Light winds from the WSW (11 kph at 250).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	26° C	-	Light winds from the N (7 kph at 1).	16 km Low: few Mid: few
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 43 minutes ago	21° C	Dry	Calm (0 kph at 234).
Seattle 49 km WSW 100m alt. 42 minutes ago	28° C	-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	17° C		Moderate winds from the NE (24 kph at 40).

* 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.