– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Wed 26 Aug Local Time
Updates in:
hr min s
Update imminent

Issued: 4 pm Wed 26 Aug Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 4mm), mostly falling on Sat morning. Warm (max 22°C on Wed afternoon, min 10°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Light rain (total 8mm), mostly falling on Sat afternoon. Very mild (max 16°C on Sun afternoon, min 10°C on Sat night). Wind will be generally light.
	Wed 26		Thursday 27			Friday 28			Saturday 29			Sunday 30			Monday 31
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	rain shwrs	light rain	rain shwrs	light rain	rain shwrs	rain shwrs	light rain	risk tstorm	rain shwrs	rain shwrs	some clouds	some clouds	light rain	light rain	rain shwrs
Cloud base (m)	9500		650	1600	850	450	750	650	450	500	850	600	950	3250	750	900	450
km/h	WSW	SSE	SW	WSW	SW	SW	WSW	SW	SW	W	SW	SW	W	S	SSW	SW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	0.2	0.4	0.7	0.2	0.2	0.4	1.5	3	0.7	0.1	—	—	0.2	0.2	2
max °C	22	19	17	17	15	12	16	14	11	13	12	12	16	13	13	13	12
min °C	22	13	14	17	11	12	15	10	10	12	10	10	15	12	13	13	11
chill °C	22	13	14	17	11	12	15	9	9	12	10	10	15	12	13	12	10

Freezing level m	3950	3650	3150	3300	3250	3200	3150	2550	2200	2400	2600	3000	3200	3300	2850	2750	2450

	—	—	6:18	—	—	6:18	—	—	6:20	—	—	6:22	—	—	6:22	—	—
	7:59	—	—	7:57	—	—	7:54	—	—	7:52	—	—	7:51	—	—	7:49	—

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 4mm), mostly falling on Sat morning. Warm (max 22°C on Wed afternoon, min 10°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 8mm), mostly falling on Sat afternoon. Very mild (max 16°C on Sun afternoon, min 10°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 10 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Renton 30 km WSW 160m alt. 29 minutes ago	24°C	Dry	Calm (3 kph at 205).
Black Diamond 32 km SSW 192m alt. 32 minutes ago		-	Calm (3 kph at 317).
Renton Airport 36 km WSW 218m alt. 2 hours ago	25°C	Clear	Light winds from the SW (11 kph at 230).	16 km
Auburn 39 km SW 119m alt. 1 hour ago	32°C	Dry	Wind obs. (11 kph from 321 degs) was rejected.
Monroe 44 km NW 80m alt. 1 hour ago	21°C	Dry	Calm (0 kph at 101).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	25°C	-	Wind obs. (6 kph from 1 degs) was rejected.	16 km
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	24°C	-	Light winds from the S (17 kph at 180).	16 km Low: few Mid: few High: scattered
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 30 minutes ago	22°C	Dry	Light winds from the SE (13 kph at 140).
Seattle 49 km WSW 100m alt. 2 hours ago		-	Light winds from the SSW (8 kph at 201).

* 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.