– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Tue 25 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Tue 25 Aug 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 28°C on Tue afternoon, min 10°C on Thu night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 21°C on Sun afternoon, min 10°C on Sat night). Wind will be generally light.
	Tuesday 25			Wednesday 26			Thursday 27			Friday 28			Saturday 29			Sunday 30
	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	rain shwrs	rain shwrs	clear	clear	some clouds	rain shwrs	rain shwrs	clear	clear	clear	clear
Cloud base (m)		4150				9150		1650			2100	2100	850	1700				8700
km/h	WSW	W	SE	W	W	SSE	W	W	SW	W	WNW	WNW	WNW	WNW	E	WNW	NW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	0.1	0.2	—	—	—	0.1	0.2	—	—	—	—
max °C	27	28	22	20	23	19	17	19	16	15	19	15	13	18	15	17	21	17
min °C	22	27	15	16	23	13	15	19	10	12	18	12	12	17	10	13	20	13
chill °C	22	27	15	16	23	13	15	19	10	12	18	12	12	17	10	13	20	13

Freezing level m	4150	4200	4200	4050	4000	3750	3450	3050	3200	3300	3250	3450	2900	3450	3700	3850	3900	3750

	6:15	—	—	6:16	—	—	6:18	—	—	6:18	—	—	6:20	—	—	6:22	—	—
	—	—	8:00	—	7:59	—	—	7:57	—	—	7:54	—	—	7:52	—	—	7:51	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 28°C on Tue afternoon, min 10°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 21°C on Sun afternoon, min 10°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
Renton 30 km WSW 160m alt. 3 hours ago	27°C	Dry	Light winds from the SW (8 kph at 225).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Wind obs. (6 kph from 306 degs) was rejected.
Renton Airport 36 km WSW 218m alt. 2 hours ago	28°C	Clear	Light winds from the S (15 kph at 170).	16 km
Auburn 39 km SW 119m alt. 44 minutes ago	37°C	Dry	Calm (0 kph at 281).
SHIP9915 43 km W 15m alt. 3 hours ago				- km
SHIP5727 43 km W 3m alt. 3 hours ago	31°C
SHIP6902 43 km W 15m alt. 2 hours ago				- km
SHIP7597 43 km W 15m alt. 3 hours ago				- km
SHIP4424 43 km W 15m alt. 3 hours ago				- km
SHIP9808 43 km W 3m alt. 3 hours ago	31°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.