– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 4 pm Wed 27 May Local Time
Updates in:
hr min s
Update imminent

Issued: 4 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 Moderate rain (total 18mm), heaviest on Fri morning. Very mild (max 16°C on Thu afternoon, min 1°C on Fri night). Wind will be generally light.											Days 5–7 Weather Summary Mostly dry. Very mild (max 14°C on Tue morning, min 2°C on Sat night). Wind will be generally light.
	Wed 27		Thursday 28			Friday 29			Saturday 30			Sunday 31			Monday 1
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	clear	clear	clear	clear	light rain	heavy rain	light rain	light rain	some clouds	some clouds	clear	clear	some clouds	some clouds	some clouds	clear	clear
km/h	NNW	N	WSW	NW	NW	SW	SW	WNW	NNW	NNW	N	NNW	NW	N	E	NW	SE
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	0.1	15	3	0.2	—	—	—	—	—	—	—	—	—
max °C	13	14	15	16	15	3	3	3	2	5	5	3	7	7	9	12	12
min °C	11	14	14	15	6	3	2	1	1	5	2	3	6	6	7	11	12
chill °C	11	14	14	15	5	-1	-2	-1	-3	2	-2	-1	3	3	6	11	12

Freezing level m	3750	3850	3850	4000	3600	2400	1850	1500	1450	2200	2250	2050	2750	3100	3050	3250	3350
Cloud base (m)	1500				2350	500	500	500	600		8900	8650	8400		6250	6350	7750

	—	—	5:16	—	—	5:16	—	—	5:15	—	—	5:13	—	—	5:13	—	—
	—	8:51	—	—	8:52	—	—	8:52	—	—	8:53	—	—	8:54	—	—	8:55

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 18mm), heaviest on Fri morning. Very mild (max 16°C on Thu afternoon, min 1°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 14°C on Tue morning, min 2°C on Sat night). Wind will be generally light.

This table gives the weather forecast for Mount Si at the specific elevation of 1270 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. 51 minutes ago	14° C	Dry	Calm (0 kph at 329).
Snoqualmie Pass 30 km ESE 824m alt. 46 minutes ago	13° C	-	Calm (0 kph at 236).
Renton 30 km WSW 160m alt. 56 minutes ago	18° C	Dry	Calm (0 kph at 333).
Black Diamond 32 km SSW 192m alt. 2 hours ago		-	Calm (5 kph at 95).
Grotto wx 35 km NE 321m alt. 2 hours ago	19° C	Dry	Calm (2 kph at 240).
Renton Airport 36 km WSW 218m alt. 2 hours ago	20° C	Clear	Light winds from the NNE (6 kph at 30).	16 km
Grotto wx 39 km NE 1101m alt. 55 minutes ago	11° C	Dry	Calm (0 kph at 5).
Auburn 39 km SW 119m alt. 2 hours ago	21° C	Dry	Calm (2 kph at 196).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	12° C	Clear	Wind obs. (9 kph from 220 degs) was rejected.	16 km
Woodinville 43 km WNW 137.2m alt. 51 minutes ago	19° C	Dry	Light winds from the NNE (8 kph at 22).

* 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.