– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Wed 08 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Wed 08 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 21°C on Thu afternoon, min 11°C on Wed night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 23°C on Mon afternoon, min 8°C on Sat night). Wind will be generally light.
		Thursday 9			Friday 10			Saturday 11			Sunday 12			Monday 13			Tuesday 14
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	clear	clear	some clouds	rain shwrs	light rain	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds
km/h	NE	NW	NW	W	SW	W	WSW	SW	WSW	ESE	WNW	NW	SE	W	W	SSE	W	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	0.1	0.2	0.1	0.1	—	—	—	—	—	—	—	—	—	—
max °C	17	18	21	19	15	18	15	11	15	15	16	21	18	20	23	19	19	22	19
min °C	11	14	21	12	14	18	11	11	13	8	12	20	13	16	22	12	16	21	11
chill °C	11	14	21	12	14	18	10	10	13	8	12	20	13	16	22	12	16	21	11

Freezing level m	3900	3850	3850	3800	3500	3450	3450	2800	3150	3350	3650	3900	3700	3800	3950	3900	3850	3800	3550
Cloud base (m)		5650	4650		600	900	700	600	950			6250							1650

	—	5:18	—	—	5:20	—	—	5:20	—	—	5:20	—	—	5:22	—	—	5:22	—	—
	—	—	—	9:04	—	—	9:02	—	—	9:02	—	—	9:01	—	—	9:00	—	—	9:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 21°C on Thu afternoon, min 11°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 23°C on Mon afternoon, min 8°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. 1 hour ago	16° C	Dry	Calm (0 kph at 30).
Snoqualmie Pass 30 km ESE 824m alt. 2 hours ago	13° C	-	Calm (0 kph at 173).
Renton 30 km WSW 160m alt. 1 hour ago	16° C	Dry	Calm (0 kph at 359).
Grotto wx 35 km NE 321m alt. 2 hours ago	18° C	Dry	Calm (5 kph at 252).
Renton Airport 36 km WSW 218m alt. 2 hours ago	19° C	Clear	Light winds from the NW (7 kph at 320).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	9° C	Dry	Calm (0 kph at 48).
Auburn 39 km SW 119m alt. 2 hours ago		-	Calm (0 kph at 228).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	10° C	Dry and partly cloudy.	Wind obs. (7 kph from 1 degs) was rejected.	16 km Low: scattered
SHIP8829 43 km W 3m alt. 3 hours ago	17° C		Light winds from the NW (17 kph at 320).
SHIP7435 43 km W 3m alt. 3 hours ago	17° C		Moderate winds from the NW (21 kph at 320).

* 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.