– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Fri 20 Feb Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Fri 20 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 21mm), heaviest during Sun night. Freeze-thaw conditions (max 6°C on Sun morning, min 0°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 15mm), heaviest on Mon afternoon. Mild temperatures (max 6°C on Mon afternoon, min 1°C on Tue night). Wind will be generally light.
	Fri 20		Saturday 21			Sunday 22			Monday 23			Tuesday 24			Wednesday 25
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	cloudy	light rain	rain shwrs	rain shwrs	light rain	mod. rain	mod. rain	mod. rain	mod. rain	light rain	rain shwrs	rain shwrs	some clouds	light rain	rain shwrs	light rain
km/h	SSW	ESE	ESE	ESE	ESE	SE	SSE	SSE	SE	S	SW	WSW	WSW	WSW	SW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	0.1	0.1	0.2	1.4	6	7	6	8	3	0.3	0.2	—	0.8	1.4	1.1
max °C	3	1	5	5	5	6	4	4	6	6	6	3	3	1	2	4	3
min °C	1	0	3	3	3	5	4	4	5	5	2	3	2	1	2	3	3
chill °C	1	-3	-2	-2	-2	2	1	2	3	2	2	2	0	-3	-1	-1	-1

Freezing level m	850	550	1100	1250	1400	1850	1300	1400	1500	1850	1100	850	900	650	700	950	900
Cloud base (m)	650	3950	2400	1850	2500	1850	750	450	400	400	500	500	500	500	450	450	450

	—	—	7:01	—	—	6:58	—	—	6:58	—	—	6:56	—	—	6:54	—	—
	5:37	—	—	5:39	—	—	5:40	—	—	5:43	—	—	5:44	—	—	5:45	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 21mm), heaviest during Sun night. Freeze-thaw conditions (max 6°C on Sun morning, min 0°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 15mm), heaviest on Mon afternoon. Mild temperatures (max 6°C on Mon afternoon, min 1°C on Tue 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. 1 hour ago	2° C	-	Calm (0 kph at 24).
Black Diamond 32 km SSW 192m alt. 27 minutes ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	5° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Auburn 39 km SW 119m alt. 55 minutes ago	-1° C	-	Calm (0 kph at 117).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-5° C	Dry and cloudy.	Calm (0 kph at 0).	14 km Low: broken Mid: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	5° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	6° C	Dry and cloudy.	Light winds from the E.(Wind varies from 020 to 090 degs) (15 kph at 80).	16 km Low: overcast
Snohomish 49 km NW 196m alt. 1 hour ago	2° C	-	Wind obs. (11 kph from 28 degs) was rejected.
SHIP7615 54 km W 3m alt. 1 hour ago	5° C		Calm (5 kph at 90).
SHIP7111 54 km W 3m alt. 2 hours ago	6° C		Calm (4 kph at 100).

* 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.