– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Tue 28 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Tue 28 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Some drizzle, heaviest during Tue afternoon. Warm (max 22°C on Wed afternoon, min 11°C on Tue night). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 4mm), mostly falling on Sat afternoon. Warm (max 24°C on Fri afternoon, min 10°C on Sun night). Wind will be generally light.
	Tuesday 28			Wednesday 29			Thursday 30			Friday 31			Saturday 1			Sunday 2
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	rain shwrs	rain shwrs	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	light rain	rain shwrs	rain shwrs	rain shwrs	clear	clear
Cloud base (m)	800	1900	1800	500				5800				9250	550	500	1550	650	1750
km/h	SW	WNW	W	NW	WNW	SE	W	WNW	ESE	W	WNW	SSE	SW	WSW	SW	W	NNW	NE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.3	0.6	0.9	—	—	—	—	—	—	—	—	—	0.8	3	0.2	0.2	—	—
max °C	16	19	16	15	22	18	18	22	20	21	24	22	14	19	14	13	18	15
min °C	14	17	11	12	20	12	15	21	13	17	23	13	14	16	11	11	17	10
chill °C	14	17	11	12	20	12	15	21	13	17	23	13	14	15	11	11	17	10

Freezing level m	3350	3550	3800	4000	4100	4150	4100	4200	4350	4350	4400	4200	3050	2750	2950	3150	3250	3800

	5:39	—	—	5:39	—	—	5:41	—	—	5:43	—	—	5:43	—	—	5:45	—	—
	—	—	8:45	—	—	8:45	—	—	8:44	—	—	8:42	—	—	8:40	—	—	8:39

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Tue afternoon. Warm (max 22°C on Wed afternoon, min 11°C on Tue night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 4mm), mostly falling on Sat afternoon. Warm (max 24°C on Fri afternoon, min 10°C on Sun 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. 2 hours ago	16° C	Dry	Calm (5 kph at 214).
Renton Airport 36 km WSW 218m alt. 2 hours ago	17° C	Dry and cloudy.	Light winds from the S (15 kph at 190).	16 km Low: few Mid: scattered High: overcast
Auburn 39 km SW 119m alt. 57 minutes ago		-	Calm (0 kph at 41).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	11° C	Fog -.	Wind obs. (6 kph from 220 degs) was rejected.	0 km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	17° C	Dry and cloudy.	Light winds from the S (13 kph at 170).	16 km Low: broken Mid: overcast
Seattle Tacoma International Airport 44 km WSW 218m alt. 2 hours ago	16° C	Dry and cloudy.	Light winds from the SSW (17 kph at 200).	16 km Low: broken Mid: overcast
BUOY-EBSW1 46 km W 3m alt. 1 hour ago
Snohomish 49 km NW 196m alt. 1 hour ago	14° C	Dry	Calm (2 kph at 171).
Seattle 49 km WSW 100m alt. 52 minutes ago		-
BUOY-WPOW1 55 km W 3m alt. 1 hour ago	16° C		Fresh winds from the S (32 kph at 170).

* 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.