– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 3 am Mon 29 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 am Mon 29 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 10°C on Wed morning, min 3°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Heavy rain (total 25mm), heaviest during Fri night. Very mild (max 10°C on Fri morning, min 3°C on Sat afternoon). Wind will be generally light.
	Monday 29			Tuesday 30			Wednesday 31			Thursday 1			Friday 2			Saturday 3
	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	some clouds	clear	clear	some clouds	some clouds	cloudy	cloudy	mod. rain	rain shwrs	cloudy	mod. rain	rain shwrs	light rain	light rain
km/h	ESE	ENE	ESE	SE	SE	SE	SE	ESE	SE	SSE	ESE	SSE	SSE	ESE	SSE	SSW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	7	0.2	—	9	2	5	1.8
max °C	7	5	4	8	7	5	10	8	6	7	7	7	10	8	8	6	5	3
min °C	4	4	3	6	5	4	7	6	5	6	5	4	8	7	5	6	3	3
chill °C	4	3	1	4	3	3	6	5	4	5	3	2	7	4	2	3	-2	0

Freezing level m	2450	2750	3100	3400	3450	3300	3200	3250	3050	2500	2050	1850	2050	2300	1900	1500	1200	950
Cloud base (m)	2850	3300	3400	7150	6100	7000	6300	5850	5100	5200	3350	600	4000	2350	1800	400	500	400

	7:54	—	—	7:54	—	—	7:54	—	—	7:54	—	—	7:54	—	—	7:54	—	—
	—	4:22	—	—	4:23	—	—	4:24	—	—	4:25	—	—	4:27	—	—	4:28	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 10°C on Wed morning, min 3°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Heavy rain (total 25mm), heaviest during Fri night. Very mild (max 10°C on Fri morning, min 3°C on Sat 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 6 km SSW 251m alt. 1 hour ago	1° C	-	Calm (0 kph at 4).
Renton Airport 36 km WSW 218m alt. 2 hours ago	0° C	-	Calm (0 kph at 0).	16 km Low: few
Auburn 39 km SW 119m alt. 1 hour ago	-2° C	-	Calm (0 kph at 51).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	-8° C	Moderate rain .	Light winds from the N (9 kph at 1).	16 km
SHIP8984 42 km WSW 15m alt. 3 hours ago				- km
SHIP10482 42 km WSW 3m alt. 2 hours ago	2° C
SHIP4326 42 km WSW 15m alt. 3 hours ago				- km
SHIP5488 42 km WSW 15m alt. 3 hours ago				- km
SHIP3755 42 km WSW 15m alt. 3 hours ago				- km
SHIP2516 42 km WSW 3m alt. 3 hours ago	2° C

* 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.