– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Mon 02 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Mon 02 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Some drizzle, heaviest during Mon afternoon. Very mild (max 15°C on Thu morning, min 5°C on Mon afternoon). Mainly fresh winds.											Days 5–7 Weather Summary Heavy rain (total 31mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Sun morning. Freeze-thaw conditions (max 15°C on Thu afternoon, min 0°C on Sun morning). Winds increasing (light winds from the SW on Thu night, strong winds from the SW by Sat night).
	Mon 2		Tuesday 3			Wednesday 4			Thursday 5			Friday 6			Saturday 7
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	cloudy	some clouds	some clouds	some clouds	clear	clear	clear	clear	clear	clear	some clouds	some clouds	light rain	light rain	heavy rain
km/h	WSW	SSW	S	SW	SW	SE	SSE	E	ESE	ESE	SW	SW	WSW	SW	SW	SW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	1.2	0.7	—	—	—	—	—	—	—	—	—	—	—	—	0.9	4	27
max °C	5	7	9	9	10	13	12	12	15	15	11	9	8	6	4	4	4
min °C	5	5	8	8	8	12	11	11	14	13	9	9	7	4	3	3	4
chill °C	0	2	6	7	6	11	10	11	14	12	7	6	5	0	-3	-2	-1

Freezing level m	2200	2600	2900	2950	2900	3500	3500	3650	3800	3800	3450	2900	2600	2050	2000	2000	2150
Cloud base (m)	450	450		5750	3000	4700	9100	8850	8650		6750	8750		1900	700	450	400

	—	—	7:30	—	—	7:28	—	—	7:26	—	—	7:26	—	—	7:24	—	—
	5:09	—	—	5:10	—	—	5:13	—	—	5:14	—	—	5:15	—	—	5:17	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Mon afternoon. Very mild (max 15°C on Thu morning, min 5°C on Mon afternoon). Mainly fresh winds.

Mount Si Weather (Days 3-6):

Heavy rain (total 31mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Sun morning. Freeze-thaw conditions (max 15°C on Thu afternoon, min 0°C on Sun morning). Winds increasing (light winds from the SW on Thu night, strong winds from the SW by Sat night).

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	9° C	Dry	Calm (0 kph at 212).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Dry and cloudy.	Light winds from the SSE (7 kph at 160).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 120).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	3° C	Moderate rain .	Calm (0 kph at 0).	1 km
SHIP4707 43 km W 3m alt. 2 hours ago	12° C		Light winds from the S (15 kph at 170).
SHIP2832 43 km W 15m alt. 3 hours ago			Light winds from the S (13 kph at 170).	- km
SHIP7033 43 km W 15m alt. 3 hours ago			Light winds from the S (13 kph at 170).	- km
SHIP7348 43 km W 15m alt. 3 hours ago			Light winds from the S (13 kph at 170).	- km
SHIP5540 43 km W 15m alt. 2 hours ago			Light winds from the S (10 kph at 170).	- 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.