– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 3 pm Mon 09 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 pm Mon 09 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Heavy rain (total 30mm), heaviest during Tue morning. Very mild (max 17°C on Wed morning, min 8°C on Mon afternoon). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 25mm), heaviest during Sat night. Very mild (max 14°C on Thu afternoon, min 7°C on Sat morning). Wind will be generally light.
	Mon 9		Tuesday 10			Wednesday 11			Thursday 12			Friday 13			Saturday 14
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	rain shwrs	mod. rain	heavy rain	some clouds	some clouds	some clouds	some clouds	cloudy	cloudy	some clouds	cloudy	cloudy	rain shwrs	light rain	rain shwrs	heavy rain
Cloud base (m)	1900	900	500	400	2850	2200	6250	6000	6300	6100		2950	2750	350	500	550	400
km/h	SE	SSW	S	SSE	SSE	SSE	SSE	SE	ESE	ESE	ESE	SE	SE	SE	SW	SSE	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	6	4	10	10	—	—	—	—	—	—	—	—	—	6	3	0.3	10
max °C	8	8	10	11	12	17	14	12	16	14	12	13	12	9	8	8	8
min °C	8	8	9	10	11	14	13	12	14	13	10	12	11	8	7	7	7
chill °C	5	5	7	8	10	13	12	12	14	12	9	10	9	8	5	6	6

Freezing level m	2200	2000	2550	2650	2950	3050	3000	2950	2900	2950	2600	2450	2350	2000	1600	1650	1750

	—	—	7:03	—	—	7:05	—	—	7:07	—	—	7:09	—	—	7:09	—	—
	4:37	—	—	4:36	—	—	4:35	—	—	4:34	—	—	4:31	—	—	4:30	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 30mm), heaviest during Tue morning. Very mild (max 17°C on Wed morning, min 8°C on Mon afternoon). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 25mm), heaviest during Sat night. Very mild (max 14°C on Thu afternoon, min 7°C on Sat morning). 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 30 km WSW 160m alt. 1 hour ago	10°C	Dry	Calm (3 kph at 99).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11°C	Moderate rain .	Light winds from the ESE (6 kph at 110).	6 km Mid: broken High: overcast
Auburn 39 km SW 119m alt. 2 hours ago	12°C	Dry	Calm (0 kph at 310).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	2°C	Light rain .	Wind obs. (6 kph from 1 degs) was rejected.	1 km Mid: scattered High: overcast
SHIP645 43 km W -m alt. 57 minutes ago	11°C	-	Calm (2 kph at 280).
SHIP1035 43 km W -m alt. 2 hours ago	11°C	-	Calm (4 kph at 150).
SHIP3841 43 km W 15m alt. 2 hours ago			Calm (4 kph at 150).	- km
SHIP1444 43 km W -m alt. 2 hours ago	11°C	-	Calm (4 kph at 150).
SHIP2566 43 km W 15m alt. 3 hours ago			Calm (6 kph at 240).	- km
SHIP9827 43 km W 15m alt. 3 hours ago			Calm (6 kph at 100).	- 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.