– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Sun 22 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Sun 22 Feb Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 32mm), mostly on Sun night. Becoming colder with a light covering of snow ,mostly falling on Tue afternoon. Freeze-thaw conditions (max 6°C on Sun afternoon, min 0°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 4mm) at first, then becoming colder with a dusting of snow on Fri night. Mild temperatures (max 5°C on Thu afternoon, min 1°C on Fri night). Wind will be generally light.
	Sun 22		Monday 23			Tuesday 24			Wednesday 25			Thursday 26			Friday 27
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	heavy rain	mod. rain	light rain	light rain	light rain	light snow	light snow	light rain	light rain	light rain	light rain	rain shwrs	light rain	light rain	light rain	light snow
km/h	SE	S	SSW	SW	NE	SSE	WSW	WSW	WSW	WSW	SW	SW	SW	SW	SW	SW	WSW
See all weather maps
cm	—	—	—	—	—	—	3	4	—	—	—	—	—	—	—	—	2
mm	1.7	20	7	0.8	0.1	0.5	—	—	1.6	1.5	1	0.2	0.3	0.6	0.2	0.3	—
max °C	6	5	3	3	3	4	1	2	3	4	3	4	5	3	3	3	2
min °C	5	3	3	2	2	4	1	0	2	3	2	3	4	2	3	3	1
chill °C	2	0	0	2	2	4	-1	0	-2	-1	-1	0	1	0	0	0	-2

Freezing level m	1450	1450	850	900	850	1200	850	600	850	1050	900	1000	1200	950	900	950	700
Cloud base (m)	500	500	450	450	900	1650	450	400	450	550	450	450	450	600	500	450	400

	—	—	6:58	—	—	6:56	—	—	6:54	—	—	6:52	—	—	6:50	—	—
	5:40	—	—	5:43	—	—	5:44	—	—	5:45	—	—	5:46	—	—	5:49	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 32mm), mostly on Sun night. Becoming colder with a light covering of snow ,mostly falling on Tue afternoon. Freeze-thaw conditions (max 6°C on Sun afternoon, min 0°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm) at first, then becoming colder with a dusting of snow on Fri night. Mild temperatures (max 5°C on Thu afternoon, min 1°C on Fri 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 10 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 28).
Black Diamond 32 km SSW 192m alt. 50 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 1 hour ago	9° C	Light rain .	Light winds from the S (6 kph at 170).	16 km Low: overcast
Auburn 39 km SW 119m alt. 40 minutes ago	3° C	Dry	Calm (0 kph at 271).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-1° C	Moderate rain .	Wind obs. (6 kph from 1 degs) was rejected.	16 km Low: few Mid: scattered High: broken
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	9° C	Light rain .	Light winds from the SE (7 kph at 130).	16 km Low: broken
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	10° C	Dry and cloudy.	Light winds from the E (11 kph at 100).	16 km Low: broken Mid: overcast
Snohomish 49 km NW 196m alt. 39 minutes ago	7° C	Dry	Calm (3 kph at 15).
SHIP457 54 km W -m alt. 2 hours ago	10° C	-	Light winds from the ESE (13 kph at 120).
SHIP3746 54 km W 15m alt. 3 hours ago			Light winds from the ESE (13 kph at 120).	- 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.