– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Sat 30 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Sat 30 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Warm (max 25°C on Tue afternoon, min 4°C on Sat night). Wind will be generally light.										Days 5–7 Weather Summary Moderate rain (total 12mm), heaviest on Wed afternoon. Warm (max 22°C on Tue night, min 8°C on Thu night). Wind will be generally light.
		Sunday 31			Monday 1			Tuesday 2			Wednesday 3			Thursday 4			Friday 5
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	some clouds	some clouds	some clouds	some clouds	some clouds	some clouds	light rain	mod. rain	light rain	light rain	light rain	rain shwrs	clear	cloudy	rain shwrs
km/h	NE	NW	NW	E	NW	NW	ESE	SE	SSW	SE	SW	NW	SW	WSW	WSW	WSW	WSW	WSW	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	—	1	7	1.8	1.3	0.4	0.6	—	—	0.5
max °C	10	11	15	13	18	21	18	22	25	22	14	13	12	10	12	11	12	14	10
min °C	4	8	14	9	14	20	15	18	24	16	14	11	9	9	11	8	9	12	5
chill °C	4	7	14	9	14	20	15	18	24	16	14	11	8	8	11	7	8	11	5

Freezing level m	1900	1850	2700	2800	2850	3200	3100	3100	3300	3300	2850	2550	2150	2800	2900	3000	2150	2050	1400
Cloud base (m)		1700	1800	8700		6950	3350	5500	3050		950	600	400	400	550	450	500	1950	700

	—	5:13	—	—	5:13	—	—	5:13	—	—	5:11	—	—	5:11	—	—	5:11	—	—
	—	—	—	8:54	—	—	8:55	—	—	8:57	—	—	8:57	—	—	8:58	—	—	8:59

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Warm (max 25°C on Tue afternoon, min 4°C on Sat night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Moderate rain (total 12mm), heaviest on Wed afternoon. Warm (max 22°C on Tue night, min 8°C on Thu 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 334).
Snoqualmie Pass 30 km ESE 824m alt. 49 minutes ago	4° C	-	Calm (0 kph at 355).
Renton 30 km WSW 160m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 341).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (2 kph at 0).
Grotto wx 35 km NE 321m alt. 59 minutes ago	9° C	Dry	Calm (3 kph at 279).
Renton Airport 36 km WSW 218m alt. 2 hours ago	14° C	Dry and partly cloudy.	Light winds from the N (11 kph at 0).	16 km Low: broken
Grotto wx 39 km NE 1101m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 16).
Auburn 39 km SW 119m alt. 1 hour ago	12° C	Dry	Calm (0 kph at 30).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	4° C	Clear	Wind obs. (9 kph from 1 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	8° C	Dry	Wind obs. (11 kph from 283 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.