– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Tue 31 Mar Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Tue 31 Mar Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 18mm) heaviest on Wed afternoon, then becoming colder with a dusting of snow on Thu morning. Very mild (max 10°C on Tue afternoon, min 1°C on Thu morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 13°C on Sun afternoon, min 2°C on Fri morning). Wind will be generally light.
	Tuesday 31			Wednesday 1			Thursday 2			Friday 3			Saturday 4			Sunday 5
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	cloudy	some clouds	rain shwrs	light rain	light rain	mod. rain	light snow	light rain	rain shwrs	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	clear	some clouds
km/h	SE	WNW	SE	ESE	SSE	SW	W	WSW	SSW	SW	W	ESE	W	WNW	ESE	NNW	NNW	ENE
See all weather maps
cm	—	—	—	—	—	—	4	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	1.7	3	4	7	—	1.3	0.9	—	—	—	—	—	—	—	—	—
max °C	7	10	6	7	8	4	2	5	4	6	9	7	9	12	9	10	13	10
min °C	4	10	3	3	7	2	1	4	2	2	8	3	5	12	6	7	13	9
chill °C	2	10	1	1	5	-2	-1	3	2	2	8	3	5	12	6	7	12	9

Freezing level m	1400	1750	1450	1400	1550	900	800	1150	1000	1300	1550	1550	2050	2100	2100	2200	2350	3050
Cloud base (m)	4550	4300	2200	450	600	400	450	450	450	900	950	950	5500	2450	2350	2000	1800	6250

	6:48	—	—	6:46	—	—	6:43	—	—	6:41	—	—	6:39	—	—	6:37	—	—
	—	7:34	—	—	7:36	—	—	7:37	—	—	7:38	—	—	7:39	—	—	7:40	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 18mm) heaviest on Wed afternoon, then becoming colder with a dusting of snow on Thu morning. Very mild (max 10°C on Tue afternoon, min 1°C on Thu morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 13°C on Sun afternoon, min 2°C on Fri 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	14° C	Dry	Calm (0 kph at 287).
Renton 30 km WSW 160m alt. 1 hour ago	16° C	-	Calm (2 kph at 221).
Black Diamond 32 km SSW 192m alt. 54 minutes ago		-	Calm (5 kph at 0).
Renton Airport 36 km WSW 218m alt. 2 hours ago	13° C	-	Wind obs. (9 kph from 350 degs) was rejected.	16 km Low: few
Auburn 39 km SW 119m alt. 55 minutes ago	24° C	Dry	Calm (0 kph at 355).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	5° C	Clear	Calm (0 kph at 0).	16 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	13° C	-	Calm (0 kph at 0).	16 km Low: few
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	13° C	Dry and partly cloudy.	Light winds from the WNW (7 kph at 300).	16 km Low: few Mid: scattered High: broken
Snohomish 49 km NW 196m alt. 1 hour ago	14° C	Dry	Calm (2 kph at 325).
Seattle 49 km WSW 100m alt. 35 minutes ago		-	Wind obs. (11 kph from 153 degs) was rejected.

* 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.