– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Tue 02 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Tue 02 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 18°C on Tue afternoon, min 3°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary A light covering of new snow mostly falling on Fri afternoon. Becoming milder with light rain (total 8mm) on Sat afternoon. Freeze-thaw conditions (max 9°C on Sun night, min 0°C on Fri night). Winds decreasing (fresh winds from the SW on Fri afternoon, calm by Sun afternoon).
	Tuesday 2			Wednesday 3			Thursday 4			Friday 5			Saturday 6			Sunday 7
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	rain shwrs	light rain	light rain	light rain	rain shwrs	rain shwrs	some clouds	light rain	light snow	snow shwrs	some clouds	rain shwrs	light snow	cloudy	rain shwrs	some clouds
km/h	SSE	W	SSE	WSW	WSW	SW	WSW	W	SSW	SW	SW	SW	SW	W	NNW	SW	W	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	3	1	—	—	1	—	—	—
mm	—	—	0.2	1.3	0.1	0.4	0.4	0.1	—	0.1	—	—	—	5	2	—	0.7	—
max °C	15	18	17	8	8	5	3	8	9	3	2	2	1	3	3	1	6	9
min °C	13	17	11	8	6	3	3	6	3	3	2	0	0	2	1	1	3	6
chill °C	13	17	9	6	4	-2	0	5	-1	0	-4	-6	-5	-1	-2	-4	0	5

Freezing level m	3200	3400	3200	2600	2400	2100	2550	3050	2350	1700	1600	1350	1400	1700	1450	1450	2200	2800
Cloud base (m)		3050	6900	1650	1650	450	500	900	3400	2100	450	750	600	750	700	400	850	5400

	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: Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 18°C on Tue afternoon, min 3°C on Wed night). Wind will be generally light.

Mount Si Weather (Days 3-6):

A light covering of new snow mostly falling on Fri afternoon. Becoming milder with light rain (total 8mm) on Sat afternoon. Freeze-thaw conditions (max 9°C on Sun night, min 0°C on Fri night). Winds decreasing (fresh winds from the SW on Fri afternoon, calm by Sun afternoon).

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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	26° C	Dry	Calm (5 kph at 44).
Snoqualmie Pass 30 km ESE 824m alt. 41 minutes ago	24° C	-	Calm (0 kph at 176).
Renton 30 km WSW 160m alt. 2 hours ago	24° C	Dry	Calm (3 kph at 311).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Light winds from the WNW (8 kph at 294).
Grotto wx 35 km NE 321m alt. 1 hour ago	27° C	Dry	Calm (5 kph at 168).
Renton Airport 36 km WSW 218m alt. 2 hours ago	22° C	Clear	Light winds from the N (11 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 43 minutes ago	21° C	Dry	Calm (3 kph at 162).
Auburn 39 km SW 119m alt. 1 hour ago	34° C	Dry	Calm (0 kph at 44).
SHIP8698 42 km WSW 3m alt. 53 minutes ago
SHIP6743 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.