– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 23 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 23 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Some drizzle, heaviest during Sun morning. Warm (max 27°C on Tue afternoon, min 13°C on Sun morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm (max 24°C on Wed afternoon, min 11°C on Thu night). Wind will be generally light.
	Sunday 23			Monday 24			Tuesday 25			Wednesday 26			Thursday 27			Friday 28
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	light rain	rain shwrs	clear	some clouds	some clouds	some clouds
Cloud base (m)	550	900					9600	6800			9350	8950	450	1750		700	1650	1600
km/h	W	NW	NE	NNW	NNW	ESE	WSW	WSW	ESE	W	WSW	SSE	SW	W	SE	W	W	SSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.6	0.5	—	—	—	—	—	—	—	—	—	—	0.4	0.3	—	—	—	—
max °C	15	18	16	22	26	21	26	27	22	21	24	19	13	20	17	15	19	16
min °C	13	18	14	17	26	20	22	27	16	18	23	12	13	18	11	12	18	11
chill °C	13	18	14	17	26	20	22	27	16	18	23	12	13	18	11	12	18	11

Freezing level m	3250	3600	4050	4050	4150	4200	4250	4250	4200	4100	4050	3850	3200	3300	3450	3400	3350	3400

	6:13	—	—	6:13	—	—	6:15	—	—	6:16	—	—	6:18	—	—	6:18	—	—
	—	—	8:05	—	—	8:02	—	—	8:00	—	7:59	—	—	7:57	—	—	7:54	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Sun morning. Warm (max 27°C on Tue afternoon, min 13°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Wed afternoon, min 11°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. 1 hour ago	22°C	Dry	Calm (2 kph at 252).
Black Diamond 32 km SSW 192m alt. 40 minutes ago		-	Calm (5 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	21°C	Dry and partly cloudy.	Light winds from the SSE (6 kph at 160).	16 km Low: scattered
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (3 kph at 224).
SHIP2936 43 km W 3m alt. 3 hours ago	22°C
SHIP3316 43 km W 15m alt. 2 hours ago				- km
SHIP4419 43 km W 15m alt. 3 hours ago				- km
SHIP9271 43 km W 15m alt. 3 hours ago				- km
SHIP5146 43 km W 15m alt. 3 hours ago				- km
SHIP9488 43 km W 3m alt. 2 hours ago	22°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.