– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Mon 29 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Mon 29 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 14°C on Tue afternoon, min 9°C on Mon morning). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Thu night. Very mild (max 18°C on Sat afternoon, min 10°C on Thu morning). Wind will be generally light.
	Monday 29			Tuesday 30			Wednesday 1			Thursday 2			Friday 3			Saturday 4
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	rain shwrs	cloudy	rain shwrs	rain shwrs	light rain	light rain	rain shwrs	some clouds	some clouds	light rain	light rain	rain shwrs	rain shwrs	rain shwrs	some clouds	some clouds
km/h	WSW	W	WNW	WSW	W	WNW	SW	WSW	W	WNW	W	W	WSW	SW	SW	WSW	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	0.1	0.1	—	0.2	0.1	0.1	0.2	0.1	—	—	0.9	0.1	0.2	0.3	0.1	—	—
max °C	10	13	13	11	14	13	10	12	12	13	17	12	12	14	15	13	18	15
min °C	9	11	10	10	12	9	10	11	9	10	16	11	11	12	12	12	16	10
chill °C	9	11	10	10	12	9	9	10	9	10	16	11	11	12	12	12	16	10

Freezing level m	3650	3600	3450	3250	3150	3200	2600	2650	3050	3050	2700	2700	3100	3400	3700	3000	2900	3500
Cloud base (m)	450	450	800	550	700	950	500	700	600	700	2000	400	500	550	700	950	2200	900

	5:11	—	—	5:11	—	—	5:13	—	—	5:13	—	—	5:13	—	—	5:15	—	—
	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:06

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 14°C on Tue afternoon, min 9°C on Mon morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Thu night. Very mild (max 18°C on Sat afternoon, min 10°C on Thu morning). 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	13° C	Dry	Calm (0 kph at 137).
Snoqualmie Pass 30 km ESE 824m alt. 3 hours ago	10° C	-	Calm (3 kph at 144).
Renton 30 km WSW 160m alt. 2 hours ago	12° C	Dry	Calm (2 kph at 219).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	Dry and cloudy.	Light winds from the SW (6 kph at 220).	16 km Low: overcast
Grotto wx 39 km NE 1101m alt. 3 hours ago	7° C	Dry	Calm (0 kph at 54).
Auburn 39 km SW 119m alt. 3 hours ago		-	Calm (0 kph at 42).
Stampede Pass Airport 40 km SE 628m alt. 59 minutes ago	7° C	Fog -.	Wind obs. (9 kph from 1 degs) was rejected.	0 km
SHIP4685 42 km WSW 15m alt. 3 hours ago				- km
SHIP2435 42 km WSW 3m alt. 3 hours ago
SHIP1067 42 km WSW 15m alt. 3 hours ago				- km

* 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.