– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Tue 30 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Tue 30 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 Thu afternoon, min 8°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Some drizzle, heaviest during Fri afternoon. Warm (max 20°C on Sun afternoon, min 9°C on Sat night). Wind will be generally light.
	Tuesday 30			Wednesday 1			Thursday 2			Friday 3			Saturday 4			Sunday 5
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	some clouds	some clouds	rain shwrs	some clouds	some clouds	cloudy	some clouds	rain shwrs	rain shwrs	rain shwrs	clear	some clouds	clear	clear	clear	clear
km/h	W	W	WNW	WSW	W	NW	WNW	WNW	SSW	WSW	W	SW	WSW	W	ESE	NW	NW	E
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	0.2	—	—	0.1	—	—	—	—	0.1	0.5	0.6	—	—	—	—	—	—
max °C	13	14	14	11	14	13	14	18	16	14	19	17	15	18	15	15	20	17
min °C	10	14	9	10	12	8	11	17	12	13	17	10	11	17	9	11	19	11
chill °C	10	14	9	10	12	8	11	17	12	13	17	9	10	17	9	11	19	11

Freezing level m	3200	3150	3100	2950	3100	3450	3250	3050	3050	3600	3600	3350	3450	3600	3750	3850	4000	4100
Cloud base (m)	750	900	1550	750	800	900	6900	3050	2300	550	850	1650	500	1950

	5:11	—	—	5:13	—	—	5:13	—	—	5:13	—	—	5:15	—	—	5:16	—	—
	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:06	—	—	9:06

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 18°C on Thu afternoon, min 8°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Fri afternoon. Warm (max 20°C on Sun afternoon, min 9°C on Sat 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. 38 minutes ago	16° C	Dry	Calm (0 kph at 312).
Snoqualmie Pass 30 km ESE 824m alt. 36 minutes ago	14° C	-	Calm (0 kph at 254).
Renton 30 km WSW 160m alt. 1 hour ago	15° C	Dry	Calm (5 kph at 169).
Grotto wx 35 km NE 321m alt. 1 hour ago	16° C	Dry	Light winds from the WSW (11 kph at 255).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17° C	Dry and cloudy.	Light winds from the WSW (15 kph at 240).	16 km Low: broken Mid: overcast
Grotto wx 39 km NE 1101m alt. 1 hour ago	12° C	Dry	Calm (2 kph at 83).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 233).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	8° C	Dry and partly cloudy.	Light winds from the S (11 kph at 181).	16 km Low: few Mid: broken
SHIP7972 43 km W 3m alt. 2 hours ago	16° C
SHIP7387 43 km W 3m alt. 3 hours ago	16° 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.