– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Tue 23 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Tue 23 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Warm (max 21°C on Tue afternoon, min 5°C on Thu night). Wind will be generally light.									Days 4–6 Weather Summary Moderate rain (total 12mm), heaviest on Fri afternoon. Mild temperatures (max 7°C on Fri morning, min 2°C on Fri night). Winds decreasing (fresh winds from the WSW on Fri afternoon, light winds from the W by Sat morning).
	Tuesday 23			Wednesday 24			Thursday 25			Friday 26			Saturday 27			Sunday 28
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	clear	clear	some clouds	cloudy	light rain	light rain	light rain	light rain	rain shwrs	light rain	light rain	light rain	light rain	rain shwrs
km/h	SE	NW	NNW	WNW	WSW	SSW	SW	SW	SW	SW	WSW	SW	W	WNW	WNW	WSW	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	0.9	3	4	3	0.8	0.6	0.4	0.3	0.1	0.1
max °C	20	21	20	17	18	14	10	11	9	7	6	4	3	7	6	5	6	6
min °C	19	20	17	16	17	9	9	10	5	6	6	2	3	6	5	5	6	6
chill °C	19	20	17	16	17	6	7	8	1	1	2	-1	0	4	3	2	3	3

Freezing level m	3500	3750	3600	3400	3350	3450	3400	3050	2850	2400	2250	1700	1900	2300	2550	2800	3150	3550
Cloud base (m)	3500	6500	9300		6900	9000	6000		500	400	400	850	500	1550	1550	450	500	600

	5:09	—	—	5:09	—	—	5:09	—	—	5:11	—	—	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 21°C on Tue afternoon, min 5°C on Thu night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 12mm), heaviest on Fri afternoon. Mild temperatures (max 7°C on Fri morning, min 2°C on Fri night). Winds decreasing (fresh winds from the WSW on Fri afternoon, light winds from the W by Sat 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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	28° C	Dry	Calm (0 kph at 336).
Snoqualmie Pass 30 km ESE 824m alt. 58 minutes ago	28° C	-	Calm (0 kph at 266).
Renton 30 km WSW 160m alt. 32 minutes ago	28° C	Dry	Calm (2 kph at 235).
Grotto wx 35 km NE 321m alt. 19 minutes ago	28° C	Dry	Calm (3 kph at 218).
Renton Airport 36 km WSW 218m alt. 2 hours ago	24° C	Clear	Light winds from the NNW (9 kph at 340).	14 km
Grotto wx 39 km NE 1101m alt. 31 minutes ago	26° C	Dry	Calm (2 kph at 180).
Auburn 39 km SW 119m alt. 1 hour ago	37° C	Dry	Calm (0 kph at 157).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	21° C	Clear	Calm (0 kph at 0).	16 km
SHIP4520 43 km W 15m alt. 1 hour ago				- km
SHIP9384 43 km W 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.