– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Wed 06 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Wed 06 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Mild temperatures (max 9°C on Wed morning, min 5°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 12°C on Sat afternoon, min 4°C on Sun night). Wind will be generally light.
	Wednesday 6			Thursday 7			Friday 8			Saturday 9			Sunday 10			Monday 11
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	some clouds	clear	some clouds	some clouds	cloudy	some clouds	some clouds	clear	some clouds	some clouds	clear	some clouds	some clouds	rain shwrs	rain shwrs	clear
km/h	SW	WSW	WNW	NNW	WNW	SW	SW	W	SSW	WNW	WNW	SW	SW	W	NNW	W	NW	NNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	0.1	0.4	—
max °C	9	9	7	6	9	8	6	8	6	8	12	11	10	11	7	5	8	7
min °C	8	8	5	5	8	7	5	7	5	7	11	9	9	11	4	5	6	5
chill °C	6	6	2	3	8	6	1	4	2	6	11	9	8	10	2	4	5	2

Freezing level m	3450	3150	3150	3200	3300	3350	2400	2450	2750	3450	3450	3350	3150	2900	2400	2250	2650	2850
Cloud base (m)	450	1500	1850			6300	5900	2500	850			5750	6350	6800	1800	750	850	8000

	5:41	—	—	5:41	—	—	5:39	—	—	5:37	—	—	5:35	—	—	5:35	—	—
	—	—	8:24	—	—	8:25	—	—	8:27	—	—	8:29	—	—	8:30	—	—	8:30

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Mild temperatures (max 9°C on Wed morning, min 5°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 12°C on Sat afternoon, min 4°C on Sun 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
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 349).
Renton 30 km WSW 160m alt. 56 minutes ago	11° C	Dry	Calm (0 kph at 176).
Black Diamond 32 km SSW 192m alt. 1 hour ago	17° C	Dry	Calm (2 kph at 0).
Grotto wx 35 km NE 321m alt. 2 hours ago	12° C	Dry	Light winds from the W (6 kph at 276).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Mist -.	Light winds from the S.(Wind varies from 008 to 011 degs) (9 kph at 180).	8 km Low: broken Mid: overcast
Grotto wx 39 km NE 1101m alt. 59 minutes ago	7° C	Dry	Calm (0 kph at 49).
Auburn 39 km SW 119m alt. 1 hour ago	11° C	Dry	Calm (2 kph at 206).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Fog -.	Wind obs. (11 kph from 1 degs) was rejected.	0 km
SHIP8171 43 km W 15m alt. 3 hours ago				- km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	13° C	Dry	Wind obs. (6 kph from 333 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.