– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Mon 06 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 06 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Freeze-thaw conditions (max 11°C on Mon morning, min -4°C on Tue morning). Winds decreasing (fresh winds from the SW on Mon night, calm by Wed morning).									Days 4–6 Weather Summary Mostly dry. Mild temperatures (max 9°C on Fri morning, min 2°C on Sat night). Wind will be generally light.
	Monday 6			Tuesday 7			Wednesday 8			Thursday 9			Friday 10			Saturday 11
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	risk tstorm	rain shwrs	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	SW	WSW	SW	WSW	WNW	NNW	NNW	WNW	N	ESE	NNE	ESE	SSE	WNW	WNW	SW	WSW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.8	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	11	11	7	-3	2	1	2	4	3	6	8	8	9	9	9	6	7	5
min °C	11	10	-2	-4	0	0	1	3	3	5	7	8	8	9	6	6	7	2
chill °C	10	7	-9	-9	-2	-2	-1	1	1	3	7	8	8	9	5	5	5	1

Freezing level m	2850	2750	1350	900	1450	1250	1800	2050	2150	2350	2550	2750	2900	2950	2900	2600	2500	1950
Cloud base (m)	8250	1700	400	450	500	7000										7000	2000	1850

	6:35	—	—	6:33	—	—	6:31	—	—	6:30	—	—	6:28	—	—	6:26	—	—
	—	7:43	—	—	7:44	—	—	7:45	—	—	7:46	—	—	7:49	—	—	7:50	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Freeze-thaw conditions (max 11°C on Mon morning, min -4°C on Tue morning). Winds decreasing (fresh winds from the SW on Mon night, calm by Wed morning).

Mount Si Weather (Days 3-6):

Mostly dry. Mild temperatures (max 9°C on Fri morning, min 2°C on Sat 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
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	17° C	Dry	Calm (0 kph at 313).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	13° C	-	Calm (0 kph at 318).
Renton 30 km WSW 160m alt. 46 minutes ago	18° C	Dry	Calm (3 kph at 295).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (6 kph from 360 degs) was rejected.
Grotto wx 35 km NE 321m alt. 48 minutes ago	17° C	Dry	Calm (3 kph at 229).
Renton Airport 36 km WSW 218m alt. 3 hours ago	14° C	Clear	Light winds from the S (7 kph at 180).	16 km
Grotto wx 39 km NE 1101m alt. 44 minutes ago	18° C	Dry	Calm (3 kph at 232).
Auburn 39 km SW 119m alt. 45 minutes ago	21° C	Dry	Light winds from the SW (6 kph at 223).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	13° C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 41 minutes ago	18° C	Dry	Calm (3 kph at 112).

* 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.