– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 20 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 20 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 26°C on Tue afternoon, min 10°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 18mm), heaviest on Fri afternoon. Warm (max 23°C on Tue night, min 10°C on Wed night). Wind will be generally light.
		Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25			Friday 26
	night	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	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	mod. rain	light rain	mod. rain	rain shwrs
km/h	E	WNW	NW	ENE	WNW	NW	E	WNW	NW	ESE	W	W	SSW	SW	WSW	SW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	5	4	8	7
max °C	15	16	21	19	22	25	22	23	26	23	20	22	18	15	18	14	12	13	11
min °C	10	13	20	14	18	24	17	20	26	14	16	21	10	13	16	11	12	12	8
chill °C	10	13	20	14	18	24	17	20	26	14	16	21	10	13	16	10	11	10	5

Freezing level m	3500	3250	3450	3550	3550	3800	3700	3600	3850	3800	3700	3700	3600	3700	3600	3450	2700	2500	1650
Cloud base (m)	8850				8900	8350			8100		9100	6750		5100	3100	400	400	400	550

	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:11	—	—
	—	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 26°C on Tue afternoon, min 10°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 18mm), heaviest on Fri afternoon. Warm (max 23°C on Tue night, min 10°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
Harman Heights wx 6 km SSW 251m alt. 52 minutes ago	13° C	Dry	Calm (0 kph at 313).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	11° C	-	Calm (0 kph at 349).
Renton 30 km WSW 160m alt. 48 minutes ago	16° C	Dry	Calm (2 kph at 226).
Renton Airport 36 km WSW 218m alt. 2 hours ago	19° C	Clear	Light winds from the SSW (13 kph at 200).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	8° C	Dry	Calm (0 kph at 15).
Auburn 39 km SW 119m alt. 35 minutes ago	21° C	Dry	Calm (0 kph at 61).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	10° C	Clear	Wind obs. (6 kph from 1 degs) was rejected.	16 km
SHIP5101 42 km WSW 15m alt. 2 hours ago				- km
SHIP6610 42 km WSW 15m alt. 2 hours ago				- km
SHIP2667 42 km WSW 3m alt. 2 hours ago

* 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.