– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 9 am Wed 19 Nov Local Time
Updates in:
hr min s
Update imminent

Issued: 9 am Wed 19 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 3mm), mostly falling on Wed night. Mild temperatures (max 9°C on Wed morning, min 4°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 41mm), heaviest during Sun afternoon. Later becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 10°C on Sat morning, min 0°C on Mon night). Wind will be generally light.
	Wednesday 19			Thursday 20			Friday 21			Saturday 22			Sunday 23			Monday 24
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	light rain	light rain	cloudy	some clouds	some clouds	cloudy	light rain	light rain	light rain	light rain	light rain	heavy rain	light snow	light rain	mod. rain	rain shwrs
km/h	ESE	SE	ESE	SW	S	W	SW	SSW	SW	SSW	S	SW	SW	WSW	WNW	SW	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	4	—	—	—
mm	—	—	0.9	0.5	—	—	—	—	1.2	0.4	0.3	3	1.8	11	13	3	7	1.2
max°C	9	8	6	6	6	6	8	8	9	10	10	9	8	7	5	3	3	2
min°C	7	6	4	5	6	5	7	7	8	9	9	9	8	6	1	3	2	0
chill°C	4	4	2	4	6	5	7	6	7	8	8	7	6	6	-1	-1	0	0

Freezing level (m)	2100	2100	1750	1300	1350	1350	1600	1850	2250	2300	2300	1950	1900	1650	1050	900	1000	750
Cloud base (m)	6650	5850		500	750	800	1950	1750	450	450	650	400	450	400	400	500	550	450

	7:16	—	—	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: Light rain (total 3mm), mostly falling on Wed night. Mild temperatures (max 9°C on Wed morning, min 4°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 41mm), heaviest during Sun afternoon. Later becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 10°C on Sat morning, 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	9° C	Dry	Calm (0 kph at 210).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	Clear	Light winds from the NNW (7 kph at 330).	16 km
Auburn 39 km SW 119m alt. 58 minutes ago	12° C	Dry	Calm (3 kph at 67).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	0° C	Dry and partly cloudy.	Wind obs. (6 kph from 1 degs) was rejected.	16 km Low: scattered
SHIP1457 42 km WSW -m alt. 1 hour ago	10° C	-	Light winds from the N (7 kph at 350).
SHIP576 42 km WSW -m alt. 2 hours ago	9° C	-	Light winds from the NNE (6 kph at 30).
SHIP8779 42 km WSW 3m alt. 3 hours ago	8° C		Calm (5 kph at 30).
SHIP5648 42 km WSW 3m alt. 2 hours ago	10° C		Calm (4 kph at 350).
SHIP6585 42 km WSW 15m alt. 2 hours ago			Calm (6 kph at 350).	- km
SHIP7509 42 km WSW 15m alt. 3 hours ago			Calm (6 kph at 60).	- 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.