– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Sun 19 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Sun 19 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 29°C on Tue afternoon, min 15°C on Sun morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 29°C on Wed afternoon, min 13°C on Fri night). Wind will be generally light.
	Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	clear	some clouds	clear	clear	clear	clear
Cloud base (m)			9700		7250		5750	5750	4600	4500	6850		5850	4600
km/h	NW	NW	E	ESE	WNW	ESE	WNW	NW	ESE	NW	NW	SSE	W	W	S	W	W	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	19	23	20	23	27	24	26	29	26	27	29	25	25	28	23	21	25	22
min °C	15	22	16	19	26	20	23	29	21	23	28	19	22	27	14	17	24	13
chill °C	15	22	16	19	26	20	23	29	21	23	28	19	22	27	14	17	24	13

Freezing level m	4050	4250	4450	4450	4550	4450	4500	4700	4650	4550	4650	4450	4150	4250	4000	4050	4100	4000

	5:28	—	—	5:30	—	—	5:31	—	—	5:31	—	—	5:33	—	—	5:33	—	—
	—	—	8:55	—	—	8:54	—	—	8:53	—	—	8:52	—	—	8:52	—	—	8:51

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 29°C on Tue afternoon, min 15°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 29°C on Wed afternoon, min 13°C on Fri 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. 40 minutes ago	17° C	Dry	Calm (3 kph at 359).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	Clear	Light winds from the NNW (13 kph at 340).	16 km
Auburn 39 km SW 119m alt. 2 hours ago	27° C	Dry	Calm (0 kph at 151).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	9° C	Clear	Wind obs. (7 kph from 200 degs) was rejected.	16 km
SHIP2359 43 km W 15m alt. 3 hours ago				- km
SHIP6994 43 km W 15m alt. 3 hours ago				- km
SHIP2445 43 km W 3m alt. 3 hours ago	21° C
SHIP9903 43 km W 3m alt. 3 hours ago	21° C
SHIP6817 43 km W 3m alt. 3 hours ago	21° C
SHIP8281 43 km W 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.