– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 pm Sun 11 Oct Local Time

Updates in:

hr min s

Update imminent

Issued: 4 pm Sun 11 Oct Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 12°C on Mon afternoon, min 6°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 3mm), mostly falling on Sat morning. Warm (max 22°C on Fri afternoon, min 11°C on Wed night). Wind will be generally light.
	Sun 11		Monday 12			Tuesday 13			Wednesday 14			Thursday 15			Friday 16
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	clear	clear	clear	some clouds	cloudy	some clouds	light rain	light rain	light rain	rain shwrs	some clouds	clear	clear	clear	clear	some clouds
Cloud base (m)	2300				2450	2400	1950	550	450	450			9000	9000	9050	9200
km/h	NNW	ESE	WNW	WNW	SE	WSW	SW	SSW	SSW	S	ESE	ESE	ESE	ESE	S	WSW	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	—	—	—	—	—	0.2	2	1.4	0.1	—	—	—	—	—	—
max °C	11	7	10	12	8	10	12	12	12	13	13	17	20	15	20	22	16
min °C	11	6	6	12	7	9	12	11	12	13	11	12	20	14	14	20	12
chill °C	10	6	6	12	7	9	12	11	12	13	10	11	20	14	14	20	12

Freezing level m	1900	2000	2200	2850	2650	2800	2750	2750	3000	3300	3700	3800	3800	3950	3950	3850	3450

	—	—	7:20	—	—	7:22	—	—	7:22	—	—	7:24	—	—	7:26	—	—
	6:27	—	—	6:24	—	—	6:22	—	—	6:21	—	—	6:19	—	—	6:16	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 12°C on Mon afternoon, min 6°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Sat morning. Warm (max 22°C on Fri afternoon, min 11°C on Wed 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
North Bend 7 km S 296m alt. 2 hours ago	6°C	Dry	Calm (0 kph at 90).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13°C	Clear	Light winds from the NE (6 kph at 40).	16 km
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	4°C	Light rain .	Calm (0 kph at 0).	13 km Low: scattered Mid: overcast
SHIP5073 42 km WSW 15m alt. 2 hours ago				- km
SHIP4212 42 km WSW 3m alt. 2 hours ago
SHIP7475 42 km WSW 15m alt. 3 hours ago				- km
SHIP10520 42 km WSW 15m alt. 3 hours ago				- km
SHIP9872 42 km WSW 3m alt. 3 hours ago
SHIP4472 42 km WSW 3m alt. 1 hour ago

* 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.