– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Wed 24 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Wed 24 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 13mm), heaviest on Fri afternoon. Warm (max 20°C on Wed afternoon, min 3°C on Fri night). Winds increasing (light winds from the NNW on Wed morning, fresh winds from the SW by Fri morning).									Days 4–6 Weather Summary Light rain (total 5mm), mostly falling on Sat morning. Mild temperatures (max 7°C on Sun night, min 3°C on Sat morning). Wind will be generally light.
	Wednesday 24			Thursday 25			Friday 26			Saturday 27			Sunday 28			Monday 29
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	clear	cloudy	cloudy	light rain	light rain	rain shwrs	light rain	light rain	light rain	light rain	light rain	light rain	light rain	light rain	light rain	light rain
km/h	NNW	W	SSW	SSW	WSW	SW	SW	SW	SW	WSW	WNW	WSW	SW	W	W	WSW	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	1	4	4	5	1.6	0.7	0.7	0.2	0.3	0.7	0.1	0.2	0.3
max °C	18	20	16	10	11	8	7	7	6	3	6	6	5	6	7	6	7	7
min °C	18	19	10	10	10	6	6	7	3	3	5	4	5	5	6	6	7	4
chill °C	18	19	7	7	9	3	2	3	-2	0	3	0	2	2	3	4	5	1

Freezing level m	3550	3450	3500	3350	2800	2800	2450	2400	1900	1950	2250	2450	2800	2650	3000	3200	3100	2700
Cloud base (m)	6150	3300	9150	5750	3200	450	400	550	750	550	1550	850	400	600	400	650	650	450

	5:09	—	—	5:09	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—
	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 13mm), heaviest on Fri afternoon. Warm (max 20°C on Wed afternoon, min 3°C on Fri night). Winds increasing (light winds from the NNW on Wed morning, fresh winds from the SW by Fri morning).

Mount Si Weather (Days 3-6):

Light rain (total 5mm), mostly falling on Sat morning. Mild temperatures (max 7°C on Sun night, min 3°C on Sat morning). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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
Harman Heights wx 6 km SSW 251m alt. 3 hours ago	26° C	Dry	Calm (0 kph at 9).
Snoqualmie Pass 30 km ESE 824m alt. 3 hours ago	23° C	-	Calm (0 kph at 105).
Renton 30 km WSW 160m alt. 3 hours ago	23° C	Dry	Calm (0 kph at 266).
Black Diamond 32 km SSW 192m alt. 3 hours ago		-	Calm (5 kph at 309).
Grotto wx 35 km NE 321m alt. 3 hours ago	22° C	Dry	Calm (2 kph at 215).
Renton Airport 36 km WSW 218m alt. 2 hours ago	24° C	Clear	Light winds from the S (7 kph at 180).	16 km
Grotto wx 39 km NE 1101m alt. 3 hours ago	21° C	Dry	Calm (0 kph at 162).
Auburn 39 km SW 119m alt. 3 hours ago		-	Calm (0 kph at 100).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	20° C	Clear	Wind obs. (7 kph from 1 degs) was rejected.	16 km
SHIP2690 43 km W 15m alt. 3 hours ago			Light winds from the NNW (10 kph at 340).	- 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.