– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Wed 27 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Wed 27 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Light rain (total 3mm), mostly falling on Fri morning. Warm (max 23°C on Thu afternoon, min 5°C on Fri night). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Warm (max 24°C on Tue afternoon, min 4°C on Sat night). Wind will be generally light.
		Thursday 28			Friday 29			Saturday 30			Sunday 31			Monday 1			Tuesday 2
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	some clouds	light rain	light rain	rain shwrs	rain shwrs	rain shwrs	clear	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	some clouds
km/h	NE	W	NW	SW	SW	WSW	W	NW	NNW	NE	NW	NW	NE	NW	NW	SE	W	WNW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	2	0.2	0.1	0.1	0.1	—	—	—	—	—	—	—	—	—	—
max °C	18	21	23	19	8	9	8	9	12	10	10	14	12	15	19	17	21	24	21
min °C	15	18	23	9	7	8	5	6	10	4	7	13	8	11	18	13	17	23	15
chill °C	15	18	23	8	5	7	5	5	9	4	6	12	8	11	18	13	17	23	15

Freezing level m	3900	3900	3900	3350	2350	2050	1450	1450	2150	2200	2000	2900	3100	3150	3200	3250	3300	3500	3250
Cloud base (m)				450	450	550	500	800	1000		2150	8050		6700	3400	3650	3450	3400	2850

	—	5:16	—	—	5:16	—	—	5:15	—	—	5:13	—	—	5:13	—	—	5:13	—	—
	—	—	—	8:52	—	—	8:52	—	—	8:53	—	—	8:54	—	—	8:55	—	—	8:57

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Light rain (total 3mm), mostly falling on Fri morning. Warm (max 23°C on Thu afternoon, min 5°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Warm (max 24°C on Tue afternoon, min 4°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. 1 hour ago	12° C	Dry	Calm (0 kph at 330).
Snoqualmie Pass 30 km ESE 824m alt. 1 hour ago	11° C	-	Calm (0 kph at 33).
Renton 30 km WSW 160m alt. 44 minutes ago	16° C	Dry	Calm (0 kph at 20).
Black Diamond 32 km SSW 192m alt. 56 minutes ago	22° C	Dry	Calm (2 kph at 130).
Grotto wx 35 km NE 321m alt. 1 hour ago	16° C	Dry	Calm (0 kph at 66).
Renton Airport 36 km WSW 218m alt. 3 hours ago	19° C	Clear	Light winds from the NW (7 kph at 320).	16 km
Grotto wx 39 km NE 1101m alt. 1 hour ago	10° C	Dry	Calm (0 kph at 5).
Auburn 39 km SW 119m alt. 1 hour ago	18° C	Dry	Calm (0 kph at 205).
Stampede Pass Airport 40 km SE 628m alt. 3 hours ago	12° C	Clear	Wind obs. (7 kph from 200 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	14° C	Dry	Calm (0 kph at 303).

* 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.