– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 06 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 06 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Freeze-thaw conditions (max 11°C on Mon afternoon, min -3°C on Tue morning). Winds decreasing (fresh winds from the SW on Mon night, calm by Wed morning).											Days 5–7 Weather Summary Mostly dry. Very mild (max 10°C on Fri afternoon, min 4°C on Sun morning). Wind will be generally light.
	Mon 6		Tuesday 7			Wednesday 8			Thursday 9			Friday 10			Saturday 11
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	cloudy	some clouds	clear
km/h	WSW	SW	WSW	W	NNW	W	WNW	N	ESE	ENE	SE	S	WNW	WSW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	0.2	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	11	7	-3	2	1	3	4	4	7	9	9	9	10	9	7	8	7
min °C	10	-1	-3	0	1	2	4	4	5	7	8	8	10	7	7	7	5
chill °C	8	-7	-9	-2	-1	2	3	3	4	7	7	8	10	6	6	6	4

Freezing level m	2800	1450	950	1550	1450	1900	2150	2400	2600	2750	2900	2950	3000	2850	2600	2550	2400
Cloud base (m)	1750	400	500	650					9000	8300				7650	7000		8600

	—	—	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 afternoon, min -3°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. Very mild (max 10°C on Fri afternoon, min 4°C on Sun 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. 58 minutes ago	17° C	Dry	Calm (2 kph at 6).
Snoqualmie Pass 30 km ESE 824m alt. 52 minutes ago	8° C	-	Calm (0 kph at 138).
Renton 30 km WSW 160m alt. 21 minutes ago	19° C	Dry	Calm (0 kph at 333).
Black Diamond 32 km SSW 192m alt. 43 minutes ago		-	Calm (2 kph at 0).
Grotto wx 35 km NE 321m alt. 24 minutes ago	17° C	Dry	Light winds from the W (10 kph at 267).
Renton Airport 36 km WSW 218m alt. 2 hours ago	21° C	Clear	Light winds from the NW (17 kph at 310).	16 km
Grotto wx 39 km NE 1101m alt. 26 minutes ago	7° C	Dry	Calm (0 kph at 305).
Auburn 39 km SW 119m alt. 24 minutes ago	16° C	Dry	Calm (2 kph at 191).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	13° C	-	Wind obs. (11 kph from 1 degs) was rejected.	16 km Low: few
SHIP3977 42 km WSW 15m alt. 3 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.