– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Sat 01 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Sat 01 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Heavy rain (total 60mm), heaviest during Sun night. Later becoming colder with a dusting of snow on Mon afternoon. Mild temperatures (max 6°C on Sat morning, min 2°C on Mon afternoon). Winds increasing (light winds from the SSW on Sat morning, near gales from the SW by Sun night).									Days 4–6 Weather Summary Moderate rain (total 11mm), heaviest on Tue morning. Very mild (max 19°C on Thu afternoon, min 2°C on Tue night). Winds decreasing (strong winds from the SW on Tue afternoon, calm by Wed morning).
	Saturday 1			Sunday 2			Monday 3			Tuesday 4			Wednesday 5			Thursday 6
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	light rain	rain shwrs	mod. rain	heavy rain	heavy rain	heavy rain	light snow	light rain	light rain	light rain	rain shwrs	clear	clear	clear	clear	clear	clear
km/h	SW	SW	SW	SE	SSW	SW	SW	WSW	SW	SSW	WSW	WSW	W	NW	NE	ESE	ESE	SSE
Wave Height Map See all maps
cm	—	—	—	—	—	—	—	1.0	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	0.8	7	16	23	11	1.6	1.5	4	5	1.6	—	—	—	—	—	—
max°C	6	6	6	5	6	6	4	2	3	5	6	5	5	10	13	15	19	18
min°C	6	5	5	5	6	3	3	2	2	5	5	2	2	8	10	15	18	16
chill°C	4	2	0	1	2	-3	-4	-6	-5	0	-1	-1	0	8	10	15	18	16

Freezing level (m)	2350	2300	2550	2550	2500	1900	1800	1650	1750	2400	2050	2050	2800	3550	4000	4100	4100	4150
Cloud base (m)	1800	800	650	550	350	400	400	450	450	400	450	850	950	8600

	5:13	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:09	—	—
	—	—	8:57	—	—	8:57	—	—	8:58	—	—	8:59	—	—	9:00	—	—	9:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Heavy rain (total 60mm), heaviest during Sun night. Later becoming colder with a dusting of snow on Mon afternoon. Mild temperatures (max 6°C on Sat morning, min 2°C on Mon afternoon). Winds increasing (light winds from the SSW on Sat morning, near gales from the SW by Sun night).

Mount Si Weather (Days 3-6):

Moderate rain (total 11mm), heaviest on Tue morning. Very mild (max 19°C on Thu afternoon, min 2°C on Tue night). Winds decreasing (strong winds from the SW on Tue afternoon, calm by Wed morning).

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	11° C	Dry	Calm (0 kph at 293).
Snoqualmie Pass 30 km ESE 824m alt. 24 minutes ago	9° C	-	Calm (0 kph at 319).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Dry and cloudy.	Light winds from the N (9 kph at 350).	16 km Low: broken Mid: overcast
Auburn 39 km SW 119m alt. 1 hour ago	17° C	Dry	Calm (0 kph at 182).
Grotto wx 39 km NE 1101m alt. 51 minutes ago	6° C	Dry	Calm (0 kph at 0).

* 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.