– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Wed 19 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Wed 19 Nov 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 Wed night. Very mild (max 10°C on Sat morning, min 4°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 48mm), heaviest during Sun afternoon. Freeze-thaw conditions (max 9°C on Sat afternoon, min 0°C on Mon night). Wind will be generally light.
	Wed 19		Thursday 20			Friday 21			Saturday 22			Sunday 23			Monday 24
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	light rain	rain shwrs	some clouds	some clouds	some clouds	some clouds	light rain	light rain	rain shwrs	light rain	mod. rain	heavy rain	rain shwrs	light rain	rain shwrs	rain shwrs
km/h	ESE	ESE	SSW	NW	ESE	WSW	SSW	SSW	SSW	SW	SSW	SSW	SSW	SW	SW	WSW	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.8	0.1	—	—	—	—	0.3	0.1	0.2	0.6	5	24	11	3	4	0.4
max°C	7	6	6	6	4	8	7	9	10	9	9	8	8	4	3	3	2
min°C	6	4	6	5	4	7	7	8	9	8	8	8	5	2	3	2	0
chill°C	3	3	6	5	4	7	7	7	8	7	7	6	2	0	0	2	0

Freezing level (m)	2100	1800	1250	1300	1250	1700	2000	2250	2250	2150	2050	2000	1850	900	900	900	700
Cloud base (m)	5850		600	700	850	1550	2150	650	450	700	1550	500	400	500	550	450	650

	—	—	7:18	—	—	7:20	—	—	7:22	—	—	7:22	—	—	7:24	—	—
	4:25	—	—	4:24	—	—	4:23	—	—	4:22	—	—	4:22	—	—	4:22	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Wed night. Very mild (max 10°C on Sat morning, min 4°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 48mm), heaviest during Sun afternoon. Freeze-thaw conditions (max 9°C on Sat afternoon, min 0°C on Mon 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	5° C	Dry	Calm (0 kph at 217).
Renton Airport 36 km WSW 218m alt. 2 hours ago	12° C	Clear	Light winds from the SE (13 kph at 140).	16 km
Auburn 39 km SW 119m alt. 2 hours ago	9° C	Dry	Calm (0 kph at 146).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	-1° C	Dry and partly cloudy.	Calm (0 kph at 0).	11 km Low: broken
SHIP3194 42 km WSW 15m alt. 2 hours ago			Light winds from the SE (12 kph at 140).	- km
SHIP7474 42 km WSW 15m alt. 2 hours ago				- km
SHIP5776 42 km WSW 3m alt. 2 hours ago	11° C		Light winds from the SE (11 kph at 140).
SHIP3702 42 km WSW 15m alt. 3 hours ago				- km
SHIP8247 42 km WSW 15m alt. 3 hours ago			Light winds from the SE (12 kph at 140).	- km
SHIP5777 42 km WSW 3m alt. 2 hours ago

* 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.