– 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. Warm (max 25°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 26°C on Tue afternoon, min 10°C on Wed 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	WSW	WSW	E	NW	NW	ENE	NW	NW	ESE	NW	NW	ENE	NW	WSW	S	WSW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.5
max °C	15	20	18	17	21	19	22	25	22	23	26	23	19	21	19	16	20	17
min °C	13	18	10	13	20	14	18	24	18	19	25	14	16	21	10	12	19	11
chill °C	12	18	10	13	20	14	18	24	18	19	25	14	16	21	10	12	19	11

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. Warm (max 25°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 26°C on Tue afternoon, min 10°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. 29 minutes ago	15° C	Dry	Calm (0 kph at 349).
Snoqualmie Pass 30 km ESE 824m alt. 24 minutes ago	8° C	-	Calm (0 kph at 68).
Renton 30 km WSW 160m alt. 31 minutes ago	13° C	Dry	Calm (3 kph at 226).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (2 kph at 24).
Grotto wx 35 km NE 321m alt. 43 minutes ago	12° C	Dry	Calm (5 kph at 258).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Dry and cloudy.	Light winds from the S (13 kph at 170).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 2 hours ago	7° C	Dry	Calm (0 kph at 9).
Auburn 39 km SW 119m alt. 1 hour ago	24° C	Dry	Calm (0 kph at 298).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	6° C	Fog -.	Wind obs. (7 kph from 1 degs) was rejected.	1 km
SHIP3208 42 km WSW 3m alt. 2 hours ago

* 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.