– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 24 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 24 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Moderate rain (total 13mm), heaviest on Mon afternoon. Very mild (max 19°C on Sun afternoon, min 7°C on Mon night). Wind will be generally light.									Days 4–6 Weather Summary Moderate rain (total 11mm), heaviest on Fri afternoon. Warm (max 21°C on Thu afternoon, min 5°C on Fri night). Wind will be generally light.
	Sunday 24			Monday 25			Tuesday 26			Wednesday 27			Thursday 28			Friday 29
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	some clouds	some clouds	some clouds	mod. rain	rain shwrs	light rain	light rain	cloudy	some clouds	some clouds	clear	clear	clear	rain shwrs	light rain	mod. rain	rain shwrs
km/h	WSW	WSW	S	SW	SSW	W	W	NNW	N	NW	WNW	NE	WNW	WNW	SW	SW	WSW	WSW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	5	3	4	1.2	—	—	—	—	—	—	0.3	0.8	8	1.6
max °C	14	19	17	13	10	8	7	8	8	13	18	16	17	21	19	9	9	9
min °C	11	17	11	12	9	7	7	7	7	10	17	12	15	20	10	9	9	5
chill °C	11	17	10	12	8	7	6	7	7	10	17	12	15	20	9	7	8	5

Freezing level m	3050	3200	3100	2200	1950	1600	1600	1950	3450	3700	3600	3550	3500	3700	3500	2500	2250	1900
Cloud base (m)	9350	5400	6900	2700	600	800	400	400	750	650	1900	3650	3800		2050	850	450	750

	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 13mm), heaviest on Mon afternoon. Very mild (max 19°C on Sun afternoon, min 7°C on Mon night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 11mm), heaviest on Fri afternoon. Warm (max 21°C on Thu afternoon, min 5°C on Fri 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	21° C	Dry	Calm (0 kph at 324).
Snoqualmie Pass 30 km ESE 824m alt. 41 minutes ago	21° C	-	Calm (0 kph at 274).
Renton 30 km WSW 160m alt. 2 hours ago	19° C	Dry	Calm (3 kph at 105).
Black Diamond 32 km SSW 192m alt. 1 hour ago		-	Calm (3 kph at 339).
Grotto wx 35 km NE 321m alt. 1 hour ago	19° C	Dry	Light winds from the W (19 kph at 273).
Renton Airport 36 km WSW 218m alt. 2 hours ago	18° C	Clear	Light winds from the S (7 kph at 170).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	17° C	Dry	Calm (2 kph at 156).
Auburn 39 km SW 119m alt. 1 hour ago	33° C	Dry	Calm (2 kph at 133).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	15° C	Clear	Wind obs. (7 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 47 minutes ago	23° C	Dry	Wind obs. (11 kph from 310 degs) was rejected.

* 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.