– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 26 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 26 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 36mm), heaviest during Wed night. Warm (max 20°C on Wed afternoon, min 2°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Moderate rain (total 19mm) heaviest on Mon morning, then becoming colder with a dusting of snow on Mon night. Very mild (max 11°C on Sun afternoon, min 2°C on Sat night). Winds increasing (calm on Mon afternoon, fresh winds from the SW by Mon night).
	Wednesday 26			Thursday 27			Friday 28			Saturday 29			Sunday 30			Monday 31
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	risk tstorm	heavy rain	light rain	light rain	mod. rain	light rain	rain shwrs	rain shwrs	mod. rain	rain shwrs	rain shwrs	cloudy	light rain	light rain	rain shwrs	light rain	light snow
km/h	SSE	ESE	SW	SE	E	SSW	SSE	SW	S	SW	W	ESE	ESE	S	S	SW	NE	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	2.0
mm	0.3	0.6	14	3	1.9	6	3	4	4	6	1.5	0.1	—	0.1	1.3	5	0.1	5
max°C	18	20	11	8	11	8	6	7	4	4	6	4	9	11	6	6	10	7
min°C	15	19	8	6	10	7	6	6	2	3	5	2	5	10	4	4	8	2
chill°C	14	19	7	3	9	4	4	3	-1	0	3	0	2	9	4	2	8	-4

Freezing level (m)	3150	3050	1950	1650	1950	1650	1350	1250	950	1050	1250	1550	1650	1700	1400	1200	1700	950
Cloud base (m)		8500	400	450	1500	1400	550	700	700	450	500	700	5400	2300	1850	500	1500	400

	6:58	—	—	6:56	—	—	6:54	—	—	6:52	—	—	6:50	—	—	6:48	—	—
	—	7:27	—	—	7:29	—	—	7:30	—	—	7:31	—	—	7:32	—	—	7:34	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 36mm), heaviest during Wed night. Warm (max 20°C on Wed afternoon, min 2°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 19mm) heaviest on Mon morning, then becoming colder with a dusting of snow on Mon night. Very mild (max 11°C on Sun afternoon, min 2°C on Sat night). Winds increasing (calm on Mon afternoon, fresh winds from the SW by Mon night).

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. 1 hour ago	14° C	Dry	Calm (0 kph at 348).
Black Diamond 32 km SSW 192m alt. 58 minutes ago		-	Light winds from the WSW (8 kph at 244).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Light rain .	Light winds from the SSE (7 kph at 150).	16 km Low: overcast
Auburn 39 km SW 119m alt. 2 hours ago	23° C	Dry	Calm (0 kph at 338).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Dry and cloudy.	Light winds from the N (6 kph at 1).	16 km Low: few Mid: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12° C	Light rain .	Light winds from the NNW (7 kph at 340).	8 km Mid: scattered High: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	11° C	Mist -.	Light winds from the N (9 kph at 1).	10 km Low: broken Mid: broken High: broken
Seattle 49 km WSW 100m alt. 2 hours ago	23° C	-	Wind obs. (13 kph from 157 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	10° C		Light winds from the NW (8 kph at 320).
Puyallup 57 km SSW 160m alt. 2 hours ago	20° C	Dry	Calm (0 kph at 135).

* 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.