– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sun 31 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sun 31 May 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 25°C on Tue afternoon, min 9°C on Sun night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 16mm), heaviest on Sat morning. Very mild (max 14°C on Thu afternoon, min 5°C on Sat morning). Wind will be generally light.
		Monday 1			Tuesday 2			Wednesday 3			Thursday 4			Friday 5			Saturday 6
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	some clouds	some clouds	some clouds	clear	clear	rain shwrs	light rain	some clouds	rain shwrs	light rain	rain shwrs	some clouds	some clouds	rain shwrs	rain shwrs	rain shwrs	mod. rain	light rain
km/h	E	WNW	NW	ESE	SSE	WNW	SSE	WSW	WSW	SW	WSW	W	SSW	SW	SW	SSW	SW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	0.1	0.6	—	0.2	0.2	0.2	—	—	1.2	4	4	6	5
max °C	13	17	20	17	23	25	22	16	17	12	10	14	14	12	11	7	8	9	8
min °C	9	13	19	14	19	25	14	13	14	9	10	12	7	9	8	6	5	9	6
chill °C	9	13	19	14	19	25	14	13	14	9	10	12	6	8	5	4	3	7	4

Freezing level m	2900	2950	3200	3050	3300	3450	3300	2700	2550	2750	3100	2950	2800	2050	1700	1500	1450	1650	1500
Cloud base (m)			7050	5900	6350	3050	6500	2100	2150	550	500	700	1550	750	900	650	500	800	450

	—	5:13	—	—	5:13	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—
	—	—	—	8:55	—	—	8:57	—	—	8:57	—	—	8:58	—	—	8:59	—	—	9:00

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 25°C on Tue afternoon, min 9°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 16mm), heaviest on Sat morning. Very mild (max 14°C on Thu afternoon, min 5°C on Sat morning). 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. 1 hour ago	9° C	Dry	Calm (0 kph at 324).
Snoqualmie Pass 30 km ESE 824m alt. 26 minutes ago	6° C	-	Calm (0 kph at 317).
Renton 30 km WSW 160m alt. 56 minutes ago	13° C	Dry	Calm (0 kph at 43).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Grotto wx 35 km NE 321m alt. 39 minutes ago	10° C	Dry	Calm (0 kph at 87).
Renton Airport 36 km WSW 218m alt. 2 hours ago	15° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 59 minutes ago	5° C	Dry	Calm (0 kph at 5).
Auburn 39 km SW 119m alt. 1 hour ago	18° C	Dry	Calm (0 kph at 256).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	6° C	Clear	Wind obs. (7 kph from 210 degs) was rejected.	16 km
SHIP4805 42 km WSW 15m alt. 2 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.