– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 3 am Tue 10 Nov Local Time

Updates in:

hr min s

Update imminent

Issued: 3 am Tue 10 Nov Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 28mm), heaviest during Tue afternoon. Very mild (max 17°C on Wed morning, min 9°C on Tue morning). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 46mm), heaviest during Sun night. Very mild (max 13°C on Fri morning, min 6°C on Sun night). Wind will be generally light.
	Tuesday 10			Wednesday 11			Thursday 12			Friday 13			Saturday 14			Sunday 15
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	heavy rain	rain shwrs	some clouds	some clouds	cloudy	cloudy	cloudy	some clouds	cloudy	light rain	mod. rain	rain shwrs	rain shwrs	rain shwrs	heavy rain	light rain	heavy rain
Cloud base (m)	450	400	2950	7100	6450	6400	5500	5350	6100	2950	2100	350	600	1550	1700	500	450	400
km/h	S	SSE	SSE	SSE	SE	SE	ESE	SE	ESE	SE	ESE	E	S	SW	SE	SE	SSE	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	9	18	1	—	—	—	—	—	—	—	0.2	9	3	1.7	7	10	4	11
max °C	10	11	11	17	15	12	16	14	12	13	12	9	9	8	8	8	9	7
min °C	9	10	11	14	13	11	14	13	11	13	10	8	9	8	7	8	7	6
chill °C	8	9	10	14	13	11	14	12	10	11	9	6	9	7	5	6	6	5

Freezing level m	2600	2750	2900	3100	3050	2950	2900	2950	2850	2550	2400	2000	1800	1700	1850	2200	2200	1700

	7:03	—	—	7:05	—	—	7:07	—	—	7:09	—	—	7:09	—	—	7:11	—	—
	—	4:36	—	—	4:35	—	—	4:34	—	—	4:31	—	—	4:30	—	—	4:30	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 28mm), heaviest during Tue afternoon. Very mild (max 17°C on Wed morning, min 9°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 46mm), heaviest during Sun night. Very mild (max 13°C on Fri morning, min 6°C on Sun 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 30 km WSW 160m alt. 1 hour ago	9°C	Dry	Calm (2 kph at 82).
Renton Airport 36 km WSW 716m alt. 2 hours ago	11°C	Dry and cloudy.	Light winds from the S (7 kph at 180).	16 km Low: overcast
Auburn 39 km SW 119m alt. 31 minutes ago	-2°C	-	Calm (0 kph at 310).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	3°C	Dry and cloudy.	Calm (0 kph at 0).	11 km Low: few Mid: broken High: overcast
SHIP1014 43 km W -m alt. 1 hour ago	11°C	-	Calm (4 kph at 220).
SHIP10073 43 km W 15m alt. 3 hours ago			Calm (6 kph at 230).	- km
SHIP3538 43 km W 15m alt. 3 hours ago			Calm (4 kph at 240).	- km
SHIP1854 43 km W -m alt. 3 hours ago	11°C	-	Calm (4 kph at 240).
SHIP7178 43 km W 3m alt. 3 hours ago	11°C		Calm (4 kph at 230).
SHIP1209 43 km W -m alt. 3 hours ago	11°C	-	Calm (4 kph at 240).

* 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.