– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Fri 03 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Fri 03 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 18°C on Sun afternoon, min 3°C on Fri morning). Wind will be generally light.									Days 4–6 Weather Summary A dusting of snow turning to light rain (total 6mm) on Tue afternoon. Freeze-thaw conditions (max 16°C on Mon afternoon, min 0°C on Mon night). Wind will be generally light.
	Friday 3			Saturday 4			Sunday 5			Monday 6			Tuesday 7			Wednesday 8
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	some clouds	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds	rain shwrs	snow shwrs	light snow	rain shwrs	rain shwrs	some clouds	rain shwrs	clear
km/h	SW	W	E	NNW	NNW	E	ESE	ENE	SE	SW	WSW	SW	WSW	WNW	SSW	NW	NNW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	1	1	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.2	0.6	—	5	0.3	—	0.1	—
max °C	7	10	8	11	14	10	16	18	14	15	16	9	2	5	2	5	8	5
min °C	3	9	4	6	13	9	11	18	12	12	16	0	0	2	2	2	7	2
chill °C	3	9	3	6	13	9	11	18	12	12	16	-4	-5	-1	2	2	6	2

Freezing level m	1350	1700	1650	2450	2750	3050	3100	3100	3000	2700	2500	850	750	1050	850	1050	1450	1250
Cloud base (m)	850	1650	1000	7050	8200	5550	6400	7050	6700	6200	6400	550	400	500	550	600	850

	6:41	—	—	6:39	—	—	6:37	—	—	6:35	—	—	6:33	—	—	6:31	—	—
	—	7:38	—	—	7:39	—	—	7:40	—	—	7:43	—	—	7:44	—	—	7:45	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 18°C on Sun afternoon, min 3°C on Fri morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

A dusting of snow turning to light rain (total 6mm) on Tue afternoon. Freeze-thaw conditions (max 16°C on Mon afternoon, 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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 43 minutes ago	7° C	Dry	Calm (0 kph at 342).
Renton 30 km WSW 160m alt. 1 hour ago	6° C	Dry	Calm (0 kph at 69).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	8° C	Dry and cloudy.	Light winds from the SSE (6 kph at 160).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 282).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	-2° C	Dry and partly cloudy.	Light winds from the W (7 kph at 280).	11 km Low: broken Mid: broken
SHIP3694 42 km WSW 15m alt. 3 hours ago				- km
SHIP2762 42 km WSW 15m alt. 3 hours ago				- km
SHIP5102 42 km WSW 3m alt. 2 hours ago	10° C
SHIP3335 42 km WSW 15m alt. 2 hours ago				- 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.