– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 04 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 04 Apr 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 18°C on Sun afternoon, min 1°C on Tue morning). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 13°C on Thu afternoon, min 2°C on Tue night). Wind will be generally light.
		Sunday 5			Monday 6			Tuesday 7			Wednesday 8			Thursday 9			Friday 10
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	cloudy	some clouds	clear	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	rain shwrs
km/h	E	ESE	SE	SE	WSW	WSW	WSW	W	NW	ESE	NW	NW	ESE	WNW	NW	SSE	WSW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.2	0.1	0.1	0.1	—	—	—	—	—	—	—	—	—	0.2
max °C	11	16	18	14	16	16	10	4	7	5	8	10	7	11	13	10	10	12	8
min °C	11	12	18	11	13	16	2	1	7	2	4	10	6	7	13	7	8	12	4
chill °C	11	12	18	11	13	16	-1	-1	6	2	4	10	6	7	13	7	8	11	2

Freezing level m	3050	3100	3100	3000	2750	2650	1200	900	1300	1000	1450	1950	2300	2400	2500	2650	2200	2250	1150
Cloud base (m)	5650	6400	6600	6400	6400	1700	450	450	950				9250		7800	8250	8350	1800	450

	—	6:37	—	—	6:35	—	—	6:33	—	—	6:31	—	—	6:30	—	—	6:28	—	—
	—	—	7:40	—	—	7:43	—	—	7:44	—	—	7:45	—	—	7:46	—	—	7:49	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 18°C on Sun afternoon, min 1°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 13°C on Thu afternoon, min 2°C on Tue 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. 2 hours ago	7° C	Dry	Calm (0 kph at 334).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	-1° C	-	Calm (0 kph at 144).
Renton 30 km WSW 160m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 31).
Black Diamond 32 km SSW 192m alt. 54 minutes ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Grotto wx 35 km NE 321m alt. 1 hour ago	7° C	Dry	Wind obs. (6 kph from 54 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Clear	Moderate winds from the NNW (20 kph at 340).	16 km
Grotto wx 39 km NE 1101m alt. 33 minutes ago	6° C	Dry	Calm (3 kph at 327).
Auburn 39 km SW 119m alt. 40 minutes ago	4° C	Dry	Calm (0 kph at 278).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3° C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 44 minutes ago	1° C	-	Calm (0 kph at 264).

* 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.