– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 10 pm Mon 12 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 10 pm Mon 12 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 21°C on Thu afternoon, min 7°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary Light rain (total 8mm), mostly falling on Sat morning. Warm (max 22°C on Fri afternoon, min 7°C on Sat night). Wind will be generally light.
		Tuesday 13			Wednesday 14			Thursday 15			Friday 16			Saturday 17
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	some clouds	cloudy	light rain	cloudy	clear	clear	clear	clear	clear	clear	rain shwrs	light rain	rain shwrs	rain shwrs
Cloud base (m)	2450	2150	1900	800	450	750		9250	9250		9500			600	550
km/h	ENE	SW	WSW	SSW	WSW	WNW	ESE	ESE	ESE	ESE	SSE	WSW	SW	WSW	NW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.4	—	—	—	—	—	—	—	1.7	5	1.6	0.3
max °C	9	10	13	11	12	13	13	18	21	14	20	22	15	10	11	9
min °C	7	9	12	11	11	13	11	12	19	13	13	20	11	10	10	7
chill °C	7	9	12	11	11	13	10	11	19	12	12	20	10	8	10	7

Freezing level m	2950	2750	2800	2900	3000	3600	3900	3900	3850	4000	3950	3700	3300	1900	2000	2450

	—	7:22	—	—	7:22	—	—	7:24	—	—	7:26	—	—	7:28	—	—
	—	—	6:22	—	—	6:21	—	—	6:19	—	—	6:16	—	—	6:15	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 21°C on Thu afternoon, min 7°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 8mm), mostly falling on Sat morning. Warm (max 22°C on Fri afternoon, min 7°C on Sat 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
Renton Airport 36 km WSW 218m alt. 3 hours ago	9°C	Clear	Light winds from the SSE (9 kph at 150).	16 km
Auburn 39 km SW 119m alt. 2 hours ago	15°C	Dry	Calm (0 kph at 311).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	2°C	Clear	Light winds from the SSW (6 kph at 210).	16 km
SHIP5331 43 km W 15m alt. 3 hours ago				- km
Monroe 44 km NW 80m alt. 1 hour ago	11°C	Dry	Calm (0 kph at 38).
SHIP13761 43 km W 15m alt. 2 hours ago				- km
SHIP4467 43 km W 15m alt. 2 hours ago				- km
SHIP10202 43 km W 15m alt. 3 hours ago				- km
SHIP14541 43 km W 3m alt. 2 hours ago
SHIP14143 43 km W 15m alt. 3 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.