– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Mon 22 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Mon 22 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 27°C on Tue afternoon, min 10°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Moderate rain (total 14mm), heaviest on Fri afternoon. Very mild (max 17°C on Thu afternoon, min 8°C on Fri night). Wind will be generally light.
	Mon 22		Tuesday 23			Wednesday 24			Thursday 25			Friday 26			Saturday 27
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	clear	clear	cloudy	light rain	light rain	mod. rain	light rain	light rain	rain shwrs	rain shwrs
km/h	NW	ESE	WSW	NW	SSE	WSW	WSW	SSW	SW	WSW	SW	SW	WSW	SW	W	NW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	0.2	1.9	6	4	1.1	1	0.4
max °C	25	22	25	27	23	21	22	20	16	17	13	11	12	11	9	13	12
min °C	24	18	22	27	17	19	21	10	13	16	11	11	11	8	8	11	9
chill °C	24	18	22	27	17	19	21	10	13	16	11	10	10	7	7	10	8

Freezing level m	3750	3700	3550	3750	3650	3500	3550	3350	3350	2950	2800	2600	2550	1900	1950	2500	2750
Cloud base (m)	8750					7000	6100		7000	1550	1800	400	400	750	600	850	900

	—	—	5:09	—	—	5:09	—	—	5:09	—	—	5:11	—	—	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 27°C on Tue afternoon, min 10°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 14mm), heaviest on Fri afternoon. Very mild (max 17°C on Thu afternoon, min 8°C on Fri 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. 2 hours ago	29° C	Dry	Calm (0 kph at 1).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	27° C	-	Calm (0 kph at 93).
Renton 30 km WSW 160m alt. 43 minutes ago	29° C	Dry	Calm (3 kph at 1).
Black Diamond 32 km SSW 192m alt. 44 minutes ago		-	Light winds from the W (10 kph at 272).
Grotto wx 35 km NE 321m alt. 39 minutes ago	28° C	Dry	Light winds from the W (19 kph at 267).
Renton Airport 36 km WSW 218m alt. 2 hours ago	27° C	Clear	Moderate winds from the NNW (22 kph at 330).	16 km
Grotto wx 39 km NE 1101m alt. 42 minutes ago	23° C	Dry	Calm (2 kph at 91).
Auburn 39 km SW 119m alt. 1 hour ago		-	Calm (0 kph at 213).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	22° C	Dry and partly cloudy.	Calm (0 kph at 0).	16 km Low: broken
SHIP1025 43 km W 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.