– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Sat 23 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Sat 23 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 9mm), mostly falling on Mon afternoon. Very mild (max 18°C on Sun afternoon, min 6°C on Mon night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 19°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.
	Sat 23		Sunday 24			Monday 25			Tuesday 26			Wednesday 27			Thursday 28
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	rain shwrs	clear	clear	some clouds	cloudy	light rain	rain shwrs	light rain	rain shwrs	rain shwrs	some clouds	clear	clear	clear	clear	some clouds
km/h	W	WSW	WSW	WSW	SSW	WSW	WSW	WSW	WNW	NW	N	NW	NW	ENE	WNW	WNW	W
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	—	—	—	—	4	3	1.2	0.4	0.3	—	—	—	—	—	—
max °C	16	14	13	18	16	13	11	9	7	11	10	12	18	15	16	19	16
min °C	16	8	10	16	12	11	9	6	7	8	7	10	16	9	13	18	8
chill °C	16	8	10	16	12	11	7	6	6	8	7	10	16	9	13	18	8

Freezing level m	3200	2950	3050	3150	2900	2200	1950	1650	1600	1900	2600	3550	3650	3800	3600	3650	3550
Cloud base (m)	750	1800		4650	6650	2400	600	850	600	550	800	850	9000		8900	9100	6450

	—	—	5:20	—	—	5:18	—	—	5:18	—	—	5:16	—	—	5:16	—	—
	—	8:45	—	—	8:46	—	—	8:49	—	—	8:50	—	—	8:51	—	—	8:52

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 9mm), mostly falling on Mon afternoon. Very mild (max 18°C on Sun afternoon, min 6°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Thu afternoon, min 7°C on Tue 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. 51 minutes ago	17° C	Dry	Calm (3 kph at 147).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	16° C	-	Calm (0 kph at 178).
Renton 30 km WSW 160m alt. 1 hour ago	17° C	Dry	Calm (3 kph at 227).
Black Diamond 32 km SSW 192m alt. 51 minutes ago		-	Light winds from the SW (10 kph at 223).
Grotto wx 35 km NE 321m alt. 41 minutes ago	17° C	Dry	Light winds from the WSW (13 kph at 255).
Renton Airport 36 km WSW 218m alt. 2 hours ago	19° C	Clear	Light winds from the S (15 kph at 190).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	12° C	Dry	Calm (2 kph at 126).
Auburn 39 km SW 119m alt. 35 minutes ago	21° C	Dry	Calm (0 kph at 183).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	14° C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 33 minutes ago	18° C	Dry	Wind obs. (11 kph from 267 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.