– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Mon 20 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Mon 20 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 23°C on Mon afternoon, min 20°C on Mon morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 21°C on Thu morning, min 9°C on Sat night). Wind will be generally light.
	Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Saturday 25
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	clear	rain shwrs	clear	clear	clear	clear	clear	clear	clear
Cloud base (m)		7050	6250	6900	6600	4400	5850	4850		4500	4300					550	2100	3300
km/h	ESE	SE	NE	SSE	NW	WNW	W	WNW	WNW	WSW	W	SW	SW	WSW	SW	SW	W	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.1	—	—	—	—	—	—	—
max °C	21	23	22	22	23	22	21	23	22	21	21	18	12	15	13	11	14	12
min °C	20	22	20	21	23	20	21	22	20	20	20	14	12	14	10	10	13	9
chill °C	20	22	20	21	23	20	21	22	20	20	20	12	9	13	8	8	12	7

Freezing level m	4450	4550	4550	4500	4600	4550	4450	4600	4400	4250	4100	3950	3650	3850	3850	3650	3400	3550

	5:30	—	—	5:31	—	—	5:31	—	—	5:33	—	—	5:33	—	—	5:35	—	—
	—	—	8:54	—	—	8:53	—	—	8:52	—	—	8:52	—	—	8:51	—	—	8:50

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 23°C on Mon afternoon, min 20°C on Mon morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 21°C on Thu morning, min 9°C on Sat night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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
Renton 30 km WSW 160m alt. 46 minutes ago	21° C	Dry	Calm (0 kph at 68).
Black Diamond 32 km SSW 192m alt. 3 hours ago		-	Calm (2 kph at 97).
Renton Airport 36 km WSW 218m alt. 3 hours ago	18° C	Clear	Light winds from the N (11 kph at 350).	16 km
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (2 kph at 210).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	17° C	Clear	Calm (0 kph at 0).	16 km
SHIP787 42 km WSW 15m alt. 1 hour ago				- km
SHIP4197 42 km WSW 15m alt. 1 hour ago				- km
SHIP1136 43 km W 15m alt. 2 hours ago				- km
SHIP5025 43 km W 3m alt. 2 hours ago
SHIP4525 43 km W 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.