– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 23 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 23 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 10mm), heaviest on Mon afternoon. Very mild (max 18°C on Sun afternoon, min 6°C on Mon night). Wind will be generally light.										Days 5–7 Weather Summary Some drizzle, heaviest during Fri afternoon. Warm (max 20°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.
		Sunday 24			Monday 25			Tuesday 26			Wednesday 27			Thursday 28			Friday 29
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	clear	clear	some clouds	cloudy	light rain	rain shwrs	light rain	light rain	rain shwrs	some clouds	clear	clear	clear	cloudy	some clouds	light rain	light rain	light rain
km/h	WSW	WSW	WSW	S	W	SSW	WSW	W	N	N	NW	NW	NE	WNW	WNW	SW	SW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	4	3	2	0.7	0.2	—	—	—	—	—	—	0.1	1.5	1.9
max °C	14	13	18	16	14	11	8	7	9	9	12	18	15	17	20	18	9	9	9
min °C	9	10	16	12	12	9	6	6	7	7	10	16	11	14	19	8	9	8	6
chill °C	9	10	16	12	12	8	6	6	7	7	10	16	11	14	19	7	8	7	4

Freezing level m	3000	2950	3150	2950	2250	2000	1600	1550	1850	2600	3550	3800	3750	3650	3700	3550	2850	2450	1750
Cloud base (m)	650	9250		6450	3000	600	1450	400	450	550	650	9000			6500	5950	1500	450	400

	—	5:20	—	—	5:18	—	—	5:18	—	—	5:16	—	—	5:16	—	—	5:16	—	—
	—	—	—	8:46	—	—	8:49	—	—	8:50	—	—	8:51	—	—	8:52	—	—	8:52

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 10mm), heaviest on Mon afternoon. Very mild (max 18°C on Sun afternoon, min 6°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Fri afternoon. Warm (max 20°C on Thu afternoon, min 7°C on Tue 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. 1 hour ago	12° C	Dry	Calm (0 kph at 330).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	9° C	-	Calm (0 kph at 359).
Renton 30 km WSW 160m alt. 1 hour ago	13° C	Dry	Calm (2 kph at 191).
Black Diamond 32 km SSW 192m alt. 56 minutes ago		-	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 46 minutes ago	12° C	Dry	Calm (0 kph at 135).
Renton Airport 36 km WSW 218m alt. 2 hours ago	16° C	Dry and cloudy.	Light winds from the S (11 kph at 180).	16 km Low: broken Mid: overcast
Grotto wx 39 km NE 1101m alt. 36 minutes ago	8° C	Dry	Calm (0 kph at 59).
Auburn 39 km SW 119m alt. 1 hour ago	13° C	Dry	Calm (0 kph at 183).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	7° C	Fog -.	Wind obs. (6 kph from 1 degs) was rejected.	0 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	12° C	Dry	Light winds from the NE (6 kph at 56).

* 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.