– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Thu 09 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Thu 09 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 22°C on Fri afternoon, min 10°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 25°C on Tue afternoon, min 12°C on Tue night). Wind will be generally light.
		Friday 10			Saturday 11			Sunday 12			Monday 13			Tuesday 14			Wednesday 15
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	some clouds	some clouds	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	NE	W	W	SW	SW	WSW	SSW	WNW	NW	E	WNW	WNW	ESE	W	WNW	SSE	WSW	W	NNE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	18	18	22	17	13	18	16	16	21	17	20	24	20	22	25	21	18	21	17
min °C	12	15	21	12	11	17	10	12	20	13	16	23	17	19	24	12	15	20	10
chill °C	12	15	21	12	10	17	10	12	20	13	16	23	17	19	24	12	15	20	10

Freezing level m	3700	3600	3600	3350	3200	3450	3150	3450	3850	4050	4150	4300	4300	4150	4150	3900	3500	3650	4000
Cloud base (m)			2150	700	600	1800					6100	5850	6700		5050	6750

	—	5:20	—	—	5:20	—	—	5:20	—	—	5:22	—	—	5:22	—	—	5:24	—	—
	—	—	—	9:02	—	—	9:02	—	—	9:01	—	—	9:00	—	—	9:00	—	—	9:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 22°C on Fri afternoon, min 10°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 25°C on Tue afternoon, min 12°C on Tue 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. 52 minutes ago	17° C	Dry	Calm (0 kph at 163).
Snoqualmie Pass 30 km ESE 824m alt. 48 minutes ago	11° C	-	Calm (0 kph at 123).
Renton 30 km WSW 160m alt. 1 hour ago	18° C	Dry	Calm (0 kph at 4).
Grotto wx 35 km NE 321m alt. 1 hour ago	16° C	Dry	Calm (0 kph at 115).
Renton Airport 36 km WSW 218m alt. 2 hours ago	20° C	Dry and partly cloudy.	Wind obs. (7 kph from 300 degs) was rejected.	16 km Low: broken
Grotto wx 39 km NE 1101m alt. 1 hour ago	10° C	Dry	Calm (0 kph at 0).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 199).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	11° C	Clear	Wind obs. (7 kph from 200 degs) was rejected.	16 km
SHIP8921 43 km W 3m alt. 2 hours ago
SHIP1164 43 km W 15m alt. 58 minutes 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.