– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Wed 29 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Wed 29 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 12°C on Thu afternoon, min 5°C on Wed morning). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Sat afternoon. Very mild (max 18°C on Sun afternoon, min 8°C on Mon night). Wind will be generally light.
	Wednesday 29			Thursday 30			Friday 1			Saturday 2			Sunday 3			Monday 4
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	some clouds	clear	some clouds	rain shwrs	rain shwrs	risk tstorm	clear	clear	clear	clear	clear	clear	clear
km/h	E	N	ESE	ESE	NW	SSE	SSW	WNW	NE	NNE	NE	ENE	E	NNW	ESE	N	NW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	0.8	0.4	1	—	—	—	—	—	—	—
max °C	7	9	10	11	12	11	11	10	10	11	13	15	17	18	18	15	15	13
min °C	5	8	9	10	12	10	10	10	8	10	12	14	16	18	16	15	15	8
chill °C	4	7	9	8	12	10	10	10	8	8	11	14	16	18	16	15	15	7

Freezing level m	2350	2650	2750	2850	2900	2900	2800	2900	2950	2800	3000	3350	3400	3550	3400	3400	3600	3750
Cloud base (m)				9250	8700		8600	2950	3350	2000	1650	9450		8900		9250	3700	400

	5:52	—	—	5:52	—	—	5:50	—	—	5:48	—	—	5:47	—	—	5:45	—	—
	—	—	8:15	—	—	8:16	—	—	8:17	—	—	8:19	—	—	8:21	—	—	8:22

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 12°C on Thu afternoon, min 5°C on Wed morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Sat afternoon. Very mild (max 18°C on Sun afternoon, min 8°C on Mon night). 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. 2 hours ago	8° C	Dry	Calm (0 kph at 321).
Snoqualmie Pass 30 km ESE 824m alt. 46 minutes ago	4° C	-	Calm (0 kph at 345).
Renton 30 km WSW 160m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 37).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 3 hours ago	8° C	Dry	Calm (0 kph at 94).
Renton Airport 36 km WSW 218m alt. 2 hours ago	10° C	Dry and cloudy.	Light winds from the NNW (11 kph at 340).	16 km Low: broken Mid: overcast
Grotto wx 39 km NE 1101m alt. 59 minutes ago	2° C	-	Calm (0 kph at 68).
Auburn 39 km SW 119m alt. 48 minutes ago	2° C	-	Calm (0 kph at 63).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	2° C	Mist -.	Calm (0 kph at 0).	3 km Low: overcast
Woodinville 43 km WNW 137.2m alt. 2 hours ago	0° C	-	Calm (3 kph at 293).

* 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.