– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Fri 21 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Fri 21 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 Fri morning, min 12°C on Sat night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 3mm), mostly falling on Wed night. Warm (max 27°C on Tue afternoon, min 12°C on Wed night). Wind will be generally light.
	Friday 21			Saturday 22			Sunday 23			Monday 24			Tuesday 25			Wednesday 26
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	rain shwrs	clear	clear	clear	clear	clear	clear	some clouds	some clouds	some clouds	rain shwrs
Cloud base (m)		5600		550	900	900	600						9550		4550	6750	1950	550
km/h	NNE	WSW	ESE	W	W	SSW	SW	NW	NE	NW	NW	ESE	W	WNW	S	WSW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.1	0.1	0.1	0.2	0.2	0.1	—	—	—	—	—	—	—	—	—	3
max °C	28	27	23	18	20	18	14	20	16	20	23	19	24	27	22	19	20	15
min °C	23	26	16	16	20	12	13	18	13	16	23	17	20	26	16	16	19	12
chill °C	23	26	16	16	20	12	12	18	13	16	23	17	20	26	16	16	19	11

Freezing level m	4650	4550	4300	4100	3700	3250	3350	3650	3950	3950	4150	4200	4150	4300	4100	3750	3250	2800

	6:09	—	—	6:11	—	—	6:13	—	—	6:13	—	—	6:15	—	—	6:16	—	—
	—	—	8:07	—	—	8:07	—	—	8:05	—	—	8:02	—	—	8:00	—	7:59	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 28°C on Fri morning, min 12°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 3mm), mostly falling on Wed night. Warm (max 27°C on Tue afternoon, min 12°C on Wed 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	21° C	Dry	Calm (0 kph at 288).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	20° C	Clear	Light winds from the N (7 kph at 350).	16 km
Auburn 39 km SW 119m alt. 30 minutes ago	26° C	Dry	Calm (0 kph at 162).
SHIP8116 42 km WSW 15m alt. 3 hours ago				- km
SHIP13255 42 km WSW 3m alt. 3 hours ago
SHIP9724 42 km WSW 3m alt. 3 hours ago
SHIP7385 42 km WSW 15m alt. 2 hours ago				- km
SHIP3850 42 km WSW 15m alt. 3 hours ago				- km
SHIP13455 42 km WSW 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.