– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 29 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 29 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 17°C on Mon morning, min 4°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Some drizzle, heaviest during Wed night. Warm (max 24°C on Tue afternoon, min 9°C on Wed night). Wind will be generally light.
	Fri 29		Saturday 30			Sunday 31			Monday 1			Tuesday 2			Wednesday 3
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	light rain	rain shwrs	clear	clear	clear	clear	some clouds	some clouds	clear	clear	clear	some clouds	cloudy	light rain	light rain
km/h	W	WNW	NW	NNW	NE	NW	NW	E	WNW	NW	ESE	W	W	S	WSW	W	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.5	0.1	0.1	0.1	—	—	—	—	—	—	—	—	—	—	—	0.3	1
max °C	9	9	9	12	10	11	15	12	17	20	17	21	24	20	14	15	10
min °C	7	5	6	10	4	7	14	8	13	19	13	17	23	12	13	11	9
chill °C	6	5	5	9	4	6	13	8	13	19	13	17	23	12	12	11	8

Freezing level m	2050	1550	1500	2050	1900	1850	2600	2750	2850	3100	3050	3100	3450	3200	2600	2250	2500
Cloud base (m)	600	1650	650	1000			1900		6850	8250	8850			6450	2600	1800	400

	—	—	5:15	—	—	5:13	—	—	5:13	—	—	5:13	—	—	5:11	—	—
	—	8:52	—	—	8:53	—	—	8:54	—	—	8:55	—	—	8:57	—	—	8:57

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 17°C on Mon morning, min 4°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Wed night. Warm (max 24°C on Tue afternoon, min 9°C on Wed 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
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	11° C	Dry	Calm (0 kph at 353).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	8° C	-	Calm (0 kph at 268).
Renton 30 km WSW 160m alt. 43 minutes ago	11° C	Dry	Calm (2 kph at 13).
Black Diamond 32 km SSW 192m alt. 55 minutes ago		-	Calm (5 kph at 262).
Grotto wx 35 km NE 321m alt. 2 hours ago	11° C	Dry	Calm (5 kph at 279).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Dry and cloudy.	Light winds from the N (11 kph at 10).	16 km Low: broken Mid: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 32).
Auburn 39 km SW 119m alt. 1 hour ago	22° C	Dry	Calm (2 kph at 257).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4° C	Dry and cloudy.	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: broken Mid: overcast
Woodinville 43 km WNW 137.2m alt. 51 minutes ago	9° C	Dry	Wind obs. (11 kph from 316 degs) was rejected.

* 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.