– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Fri 22 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Fri 22 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 20°C on Fri afternoon, min 7°C on Sat night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 7mm), mostly falling on Mon night. Very mild (max 15°C on Mon afternoon, min 7°C on Mon night). Wind will be generally light.
	Fri 22		Saturday 23			Sunday 24			Monday 25			Tuesday 26			Wednesday 27
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	some clouds	clear	some clouds	clear	some clouds	cloudy	light rain	light rain	light rain	rain shwrs	rain shwrs	rain shwrs	rain shwrs	some clouds
km/h	NW	SSE	WSW	W	SSW	SW	SW	S	WSW	WSW	SW	WNW	NNW	NNE	NW	NW	N
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	1	4	0.7	0.8	0.4	0.1	0.1	—
max °C	20	17	14	17	15	13	17	15	14	15	9	8	11	10	12	15	14
min °C	20	11	12	16	7	10	16	11	12	10	7	7	9	7	9	13	8
chill °C	20	11	12	16	6	9	16	10	12	8	6	7	9	7	9	13	8

Freezing level m	3200	3250	3200	3250	3150	3100	3150	2800	2350	2050	1550	1650	2000	2600	3250	3500	3650
Cloud base (m)	8700	6850		7100	8700	5750	5800	6400	2900	750	700	550	650	2000	850	1550

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

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 20°C on Fri afternoon, min 7°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 7mm), mostly falling on Mon night. Very mild (max 15°C on Mon afternoon, min 7°C on Mon 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	17° C	Dry	Calm (0 kph at 334).
Snoqualmie Pass 30 km ESE 824m alt. 28 minutes ago	14° C	-	Calm (2 kph at 85).
Renton 30 km WSW 160m alt. 1 hour ago	21° C	Dry	Calm (0 kph at 328).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Light winds from the SW (10 kph at 225).
Grotto wx 35 km NE 321m alt. 1 hour ago	22° C	Dry	Calm (5 kph at 230).
Renton Airport 36 km WSW 218m alt. 2 hours ago	22° C	Clear	Light winds from the NNW (19 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 57 minutes ago	12° C	Dry	Calm (0 kph at 303).
Auburn 39 km SW 119m alt. 35 minutes ago	18° C	Dry	Calm (0 kph at 267).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	15° C	Clear	Light winds from the W (13 kph at 280).	16 km
Woodinville 43 km WNW 137.2m alt. 30 minutes ago	19° C	Dry	Calm (3 kph at 311).

* 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.