– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 pm Sat 31 Jan Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Sat 31 Jan Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 18mm), heaviest on Sun morning. Very mild (max 12°C on Sat afternoon, min 5°C on Sun night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 17°C on Thu morning, min 9°C on Tue afternoon). Wind will be generally light.
	Sat 31		Sunday 1			Monday 2			Tuesday 3			Wednesday 4			Thursday 5
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	rain shwrs	heavy rain	light rain	rain shwrs	light rain	light rain	light rain	some clouds	some clouds	some clouds	clear	clear	clear	clear	clear	some clouds
km/h	SSE	SE	SSW	SW	S	S	SSW	SSE	ESE	SE	SE	SE	SE	ESE	ESE	E	ESE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	0.1	12	2	0.5	2	0.4	0.5	—	—	—	—	—	—	—	—	—
max °C	12	8	6	7	6	6	7	9	12	12	9	16	15	9	17	15	10
min °C	9	7	6	6	5	5	6	7	10	9	9	13	10	9	13	11	9
chill °C	7	6	4	4	3	3	6	6	9	8	8	13	10	9	13	10	8

Freezing level m	2550	2400	1450	1500	1400	1400	1900	2300	3050	3100	3150	3400	3400	3450	3650	3600	3650
Cloud base (m)	5650	5650	700	450	650	1900	500	450	6600	6900	4850	5500	9150

	—	—	7:31	—	—	7:31	—	—	7:30	—	—	7:28	—	—	7:26	—	—
	5:07	—	—	5:07	—	—	5:09	—	—	5:10	—	—	5:13	—	—	5:14	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 18mm), heaviest on Sun morning. Very mild (max 12°C on Sat afternoon, min 5°C on Sun night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 17°C on Thu morning, min 9°C on Tue afternoon). 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. 52 minutes ago	8° C	Dry	Calm (0 kph at 17).
Black Diamond 32 km SSW 192m alt. 47 minutes ago	13° C	Dry	Calm (0 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	10° C	Clear	Calm (0 kph at 0).	16 km
Auburn 39 km SW 119m alt. 32 minutes ago	2° C	-	Calm (0 kph at 198).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	1° C	Light rain .	Wind obs. (6 kph from 1 degs) was rejected.	1 km
SHIP5443 43 km W 3m alt. 3 hours ago	13° C		Calm (2 kph at 180).
SHIP7338 43 km W 15m alt. 2 hours ago			Calm (2 kph at 190).	- km
SHIP8268 43 km W 15m alt. 3 hours ago			Calm (2 kph at 180).	- km
SHIP5939 43 km W 3m alt. 2 hours ago	12° C		Calm (2 kph at 330).
SHIP2575 43 km W 15m alt. 2 hours ago			Calm (2 kph at 190).	- 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.