– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 am Tue 26 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 am Tue 26 May 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 Thu afternoon, min 7°C on Tue morning). Wind will be generally light.									Days 4–6 Weather Summary Light rain (total 2mm), mostly falling on Fri afternoon. Very mild (max 11°C on Sat afternoon, min 5°C on Sat night). Wind will be generally light.
	Tuesday 26			Wednesday 27			Thursday 28			Friday 29			Saturday 30			Sunday 31
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	rain shwrs	rain shwrs	clear	clear	clear	clear	rain shwrs	rain shwrs	light rain	light rain	rain shwrs	rain shwrs	light rain	some clouds	rain shwrs	some clouds	clear
km/h	NNW	NW	NE	NW	NW	ESE	W	NW	SSW	SW	WSW	W	NW	NW	NW	NW	NNW	ENE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.7	0.6	0.1	—	—	—	—	0.2	0.1	0.2	0.8	0.7	0.1	0.3	—	0.1	—	—
max °C	8	9	10	16	19	17	20	22	19	10	9	9	8	11	10	8	11	10
min °C	7	8	8	12	18	14	17	22	10	9	9	6	6	10	5	6	9	5
chill °C	7	8	8	12	18	14	17	22	10	8	8	5	5	9	5	5	8	5

Freezing level m	1750	2350	3600	3850	3950	3900	3900	3950	3600	3100	2450	2300	1450	2000	1650	1450	1950	2150
Cloud base (m)	450	450	900	9150	9150		9500			500	450	400	550	850	1800	850	750

	5:18	—	—	5:16	—	—	5:16	—	—	5:16	—	—	5:15	—	—	5:13	—	—
	—	—	8:50	—	—	8:51	—	—	8:52	—	—	8:52	—	—	8:53	—	—	8:54

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Some drizzle, heaviest during Tue afternoon. Warm (max 22°C on Thu afternoon, min 7°C on Tue morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Light rain (total 2mm), mostly falling on Fri afternoon. Very mild (max 11°C on Sat afternoon, min 5°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
Harman Heights wx 6 km SSW 251m alt. 2 hours ago	11° C	Dry	Calm (0 kph at 337).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	7° C	-	Calm (2 kph at 140).
Renton 30 km WSW 160m alt. 55 minutes ago	9° C	Dry	Calm (0 kph at 321).
Black Diamond 32 km SSW 192m alt. 57 minutes ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 48 minutes ago	9° C	Dry	Calm (2 kph at 242).
Renton Airport 36 km WSW 716m alt. 3 hours ago	10° C	Dry and cloudy.	Light winds from the SSE (6 kph at 160).	16 km Low: few Mid: scattered High: overcast
Grotto wx 39 km NE 1101m alt. 49 minutes ago	4° C	Dry	Calm (0 kph at 58).
Auburn 39 km SW 119m alt. 45 minutes ago	11° C	Dry	Calm (0 kph at 44).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	3° C	Fog -.	Wind obs. (6 kph from 1 degs) was rejected.	0 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	7° C	Dry	Calm (2 kph at 6).

* 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.