– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Tue 29 Apr Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Tue 29 Apr Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 3mm), mostly falling on Tue afternoon. Warm (max 21°C on Thu afternoon, min 5°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 9mm), mostly falling on Sat morning. Very mild (max 18°C on Fri afternoon, min 2°C on Sat night). Wind will be generally light.
	Tue 29		Wednesday 30			Thursday 1			Friday 2			Saturday 3			Sunday 4
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	cloudy	clear	clear	clear	clear	clear	clear	some clouds	light rain	light rain	rain shwrs	rain shwrs	light rain	rain shwrs	clear
km/h	W	WNW	N	NW	E	SSE	WNW	SE	W	W	WSW	WSW	NW	N	NNW	NW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	2.0	0.9	—	—	—	—	—	—	—	—	3	5	0.9	0.1	0.2	0.1	—
max°C	10	8	8	13	10	17	21	17	16	18	13	8	8	6	6	10	8
min°C	9	5	5	11	8	13	20	12	14	17	9	6	6	2	4	8	4
chill°C	7	5	4	11	8	13	20	12	14	17	8	4	4	1	2	6	4

Freezing level (m)	1900	1450	1900	3250	3500	3450	3500	3350	3200	3100	2150	1350	1400	1000	1150	2000	3100
Cloud base (m)	550	450	550	8850	9200					2800	400	450	500	1700	600

	—	—	5:52	—	—	5:50	—	—	5:48	—	—	5:47	—	—	5:45	—	—
	—	8:15	—	—	8:16	—	—	8:17	—	—	8:19	—	—	8:21	—	—	8:22

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 3mm), mostly falling on Tue afternoon. Warm (max 21°C on Thu afternoon, min 5°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 9mm), mostly falling on Sat morning. Very mild (max 18°C on Fri afternoon, min 2°C on Sat night). 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	10° C	Dry	Calm (2 kph at 223).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 0).
Renton Airport 36 km WSW 218m alt. 3 hours ago	12° C	Dry and partly cloudy.	Light winds from the N (9 kph at 350).	16 km Low: broken
Auburn 39 km SW 119m alt. 47 minutes ago	17° C	Dry	Calm (0 kph at 10).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	4° C	Dry and cloudy.	Wind obs. (11 kph from 1 degs) was rejected.	16 km Low: few Mid: scattered High: overcast
Seattl / oeing Airport 44 km WSW 218m alt. 3 hours ago	12° C	Dry and cloudy.	Light winds from the N (6 kph at 1).	16 km Low: few Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 3 hours ago	12° C	Dry and partly cloudy.	Light winds from the NNE (17 kph at 20).	16 km Low: few Mid: broken
SHIP6849 48 km SW 15m alt. 3 hours ago				- km
SHIP9456 48 km SW 15m alt. 3 hours ago				- km
SHIP5394 48 km SW 15m alt. 3 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.