– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Mon 30 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Mon 30 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 8mm) at first, then becoming colder with a dusting of snow on Thu morning. Mild temperatures (max 9°C on Tue afternoon, min 2°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 16°C on Sun afternoon, min 2°C on Thu night). Wind will be generally light.
		Tuesday 31			Wednesday 1			Thursday 2			Friday 3			Saturday 4			Sunday 5
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	cloudy	light rain	light rain	light rain	light rain	light snow	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	clear	clear	some clouds	cloudy	cloudy	cloudy
km/h	ESE	SSE	WNW	SE	ESE	SSE	WSW	W	W	SSW	WSW	W	ESE	NNW	NW	E	NW	NNE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	2	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	0.8	0.8	3	3	—	0.9	0.5	—	—	—	—	—	—	—	—	—
max °C	3	7	9	6	7	7	3	2	5	4	6	9	7	10	12	9	14	16	12
min °C	2	3	9	3	4	7	2	2	4	2	2	8	3	5	12	7	9	16	11
chill °C	0	1	9	1	2	5	0	-1	3	2	2	8	3	5	12	7	9	16	10

Freezing level m	1300	1350	1600	1350	1450	1450	850	800	1150	1000	1200	1500	1450	2100	2200	2600	2750	2850	2950
Cloud base (m)	5700	4400	4350	2200	400	750	550	450	500	450	750	1600	1000	1000	5950	6800	6350	6550	6150

	—	6:48	—	—	6:46	—	—	6:43	—	—	6:41	—	—	6:39	—	—	6:37	—	—
	—	—	7:34	—	—	7:36	—	—	7:37	—	—	7:38	—	—	7:39	—	—	7:40	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 8mm) at first, then becoming colder with a dusting of snow on Thu morning. Mild temperatures (max 9°C on Tue afternoon, min 2°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 16°C on Sun afternoon, min 2°C on Thu 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. 34 minutes ago	2° C	-	Calm (0 kph at 346).
Renton 30 km WSW 160m alt. 2 hours ago	4° C	-	Calm (2 kph at 20).
Black Diamond 32 km SSW 192m alt. 45 minutes ago		-	Calm (2 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	6° C	Clear	Light winds from the N (13 kph at 350).	16 km
Auburn 39 km SW 119m alt. 26 minutes ago	9° C	Dry	Calm (0 kph at 205).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-4° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	6° C	Clear	Calm (0 kph at 0).	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	5° C	Dry and partly cloudy.	Light winds from the NNE (19 kph at 20).	16 km Low: broken
Snohomish 49 km NW 196m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 60).
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	7° C		Fresh winds from the N (30 kph at 10).

* 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.