– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sat 18 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sat 18 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 27°C on Mon afternoon, min 12°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 29°C on Tue afternoon, min 12°C on Thu night). Wind will be generally light.
	Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	clear	clear	some clouds	cloudy	some clouds	some clouds	clear	some clouds	some clouds	clear	clear	clear	clear	clear
Cloud base (m)		2000						6900		7250	6400	4600	5650	4450		4900
km/h	W	NW	NE	NW	NW	ENE	NNE	WNW	ESE	WNW	NW	SE	WNW	WNW	ESE	W	W	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	17	21	18	19	23	20	22	27	24	27	29	25	26	29	26	25	26	22
min °C	14	20	12	15	22	16	19	25	20	23	29	21	22	28	19	21	26	12
chill °C	14	20	12	15	22	16	19	25	20	23	29	21	22	28	19	21	26	11

Freezing level m	3600	3850	4150	4100	4300	4500	4550	4650	4600	4700	4750	4750	4550	4500	4350	4200	4100	3800

	5:26	—	—	5:28	—	—	5:30	—	—	5:31	—	—	5:31	—	—	5:33	—	—
	—	—	8:57	—	—	8:55	—	—	8:54	—	—	8:53	—	—	8:52	—	—	8:52

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 27°C on Mon afternoon, min 12°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 29°C on Tue afternoon, min 12°C on Thu 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
Renton 30 km WSW 160m alt. 38 minutes ago	21° C	Dry	Calm (0 kph at 359).
Renton Airport 36 km WSW 218m alt. 2 hours ago	21° C	Dry and partly cloudy.	Light winds from the N (6 kph at 1).	16 km Low: broken Mid: broken
Auburn 39 km SW 119m alt. 1 hour ago	36° C	Dry	Calm (0 kph at 209).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	16° C	Dry and partly cloudy.	Wind obs. (6 kph from 1 degs) was rejected.	16 km Low: broken
SHIP2642 43 km W 15m alt. 2 hours ago				- km
Seattl / oeing Airport 44 km WSW 218m alt. 1 hour ago	22° C	Dry and partly cloudy.	Light winds from the N (9 kph at 1).	16 km Low: scattered
Seattle Tacoma International Airport 44 km WSW 218m alt. 1 hour ago	22° C	Dry and partly cloudy.	Light winds from the W (9 kph at 270).	16 km Low: few Mid: scattered
Snohomish 49 km NW 196m alt. 1 hour ago	21° C	Dry	Wind obs. (8 kph from 207 degs) was rejected.
Seattle 49 km WSW 100m alt. 50 minutes ago		-	Wind obs. (6 kph from 177 degs) was rejected.
BUOY-WPOW1 55 km W 3m alt. 53 minutes ago	18° C		Calm (4 kph at 30).

* 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.