– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Sat 20 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Sat 20 Jun 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 18°C on Mon afternoon, min 8°C on Sat morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 19°C on Tue afternoon, min 6°C on Thu night). Wind will be generally light.
	Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	some clouds	clear	some clouds	clear	some clouds	some clouds	clear	clear	some clouds	some clouds	clear	clear	some clouds	light rain
km/h	SW	WSW	N	N	NNW	N	ESE	NW	NW	NW	WNW	N	NNW	WSW	WSW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.5
max °C	9	13	12	10	15	14	16	18	18	17	19	18	14	14	13	9	13	11
min °C	8	11	8	9	13	13	14	18	16	16	18	13	14	14	9	9	12	6
chill °C	6	10	7	8	12	12	14	18	16	16	18	12	13	14	8	8	11	2

Freezing level m	3500	3450	3500	3350	3500	3550	3500	3850	3750	3600	3950	3850	3650	3550	3700	3850	3900	3450
Cloud base (m)			9150					8300		6400			6550	6300			6050	2400

	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—
	—	—	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: Mostly dry. Very mild (max 18°C on Mon afternoon, min 8°C on Sat morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 19°C on Tue afternoon, min 6°C on Thu 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
Snoqualmie Pass 30 km ESE 824m alt. 53 minutes ago	7° C	-	Calm (0 kph at 309).
Renton 30 km WSW 160m alt. 2 hours ago	12° C	Dry	Calm (2 kph at 217).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	12° C	Dry	Light winds from the W (10 kph at 259).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Dry and cloudy.	Light winds from the SSE (15 kph at 160).	16 km Low: overcast
Auburn 39 km SW 119m alt. 2 hours ago	17° C	Dry	Calm (0 kph at 297).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6° C	Dry and cloudy.	Calm (0 kph at 0).	0.0 km High: overcast
SHIP3208 42 km WSW 3m alt. 1 hour ago
Woodinville 43 km WNW 137.2m alt. 2 hours ago	15° C	Dry	Wind obs. (6 kph from 336 degs) was rejected.
SHIP5117 43 km W 3m alt. 2 hours ago	13° C

* 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.