– Lat/Long: 47.51° N 121.74° W

Mount Si Weather Forecast

Cascade Range · United States

Issued: 4 am Tue 29 Sep Local Time

Updates in:

hr min s

Update imminent

Issued: 4 am Tue 29 Sep Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 17mm), heaviest on Tue afternoon. Very mild (max 14°C on Wed afternoon, min 10°C on Tue night). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Fri afternoon. Warm (max 22°C on Sun afternoon, min 11°C on Fri night). Wind will be generally light.
	Tuesday 29			Wednesday 30			Thursday 1			Friday 2			Saturday 3			Sunday 4
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	mod. rain	rain shwrs	rain shwrs	clear	some clouds	cloudy	cloudy	light rain	light rain	light rain	clear	clear	clear	clear	clear	some clouds	clear
Cloud base (m)	400	400	450	8950	8600		2700	2050	800	600	450				9450			9250
km/h	WSW	WSW	WSW	NNW	NW	E	SE	SW	SW	WSW	W	E	E	NE	ESE	ESE	N	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	4	9	4	0.1	—	—	—	—	0.4	0.4	0.7	—	—	—	—	—	—	—
max °C	12	12	12	12	14	12	12	13	13	13	12	12	17	20	15	20	22	17
min °C	12	12	10	10	14	10	12	13	13	13	12	11	12	19	14	14	20	15
chill °C	10	10	9	10	14	10	12	13	13	12	12	11	12	19	14	14	20	15

Freezing level m	3300	3200	2700	3050	3150	3300	3250	3350	3300	3200	3550	3950	4150	4200	4100	4100	4100	4000

	7:01	—	—	7:03	—	—	7:05	—	—	7:05	—	—	7:07	—	—	7:09	—	—
	—	6:51	—	—	6:49	—	—	6:46	—	—	6:45	—	—	6:43	—	—	6:40	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 17mm), heaviest on Tue afternoon. Very mild (max 14°C on Wed afternoon, min 10°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Fri afternoon. Warm (max 22°C on Sun afternoon, min 11°C on Fri 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 6 km SE 247m alt. 3 hours ago	12°C	Dry	Calm (0 kph at 193).
Fall City 19 km W 115m alt. 3 hours ago	16°C	Dry	Calm (0 kph at 341).
Maple Valley 29 km SSW 185.6m alt. 4 hours ago	15°C	Dry	Calm (2 kph at 192).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Bellevue 32 km W 128m alt. 3 hours ago	16°C	-	Light winds from the S (8 kph at 184).
Redmond 32 km WNW 112m alt. 3 hours ago	13°C	-
Benson Hill wx 35 km SW 144m alt. 3 hours ago	15°C	Dry	Calm (0 kph at 315).
Renton Airport 36 km WSW 218m alt. 3 hours ago	16°C	Dry and cloudy.	Light winds from the SSE (9 kph at 160).	16 km Low: overcast
Auburn 39 km SW 119m alt. 2 hours ago	14°C	Dry	Calm (0 kph at 91).
Auburn wx 42 km SW 16m alt. 3 hours ago	16°C	Dry	Calm (0 kph at 154).

* 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.