– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Thu 07 May Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Thu 07 May Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mostly dry. Very mild (max 11°C on Sat afternoon, min 4°C on Fri morning). Wind will be generally light.										Days 5–7 Weather Summary Mostly dry. Very mild (max 18°C on Wed afternoon, min 4°C on Sun night). Wind will be generally light.
		Friday 8			Saturday 9			Sunday 10			Monday 11			Tuesday 12			Wednesday 13
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	some clouds	cloudy	clear	clear	clear	cloudy	some clouds	some clouds	some clouds	rain shwrs	clear	clear	clear	clear	some clouds	clear	clear	clear	clear
km/h	SW	SW	W	SW	N	W	WSW	SW	WSW	N	NNE	NNE	E	SE	W	W	WSW	W	SW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	—	—	—	—	—	—	—	—	—	0.2	—	—	—	—	—	—	—	—	—
max °C	8	5	8	7	9	11	11	9	9	7	7	11	12	15	17	16	16	18	17
min °C	6	4	6	5	7	10	9	8	7	4	6	10	12	14	17	14	15	17	15
chill °C	3	0	3	3	6	10	8	6	5	0	3	10	12	14	17	14	15	17	15

Freezing level m	3450	2300	2500	2900	3450	3400	3250	2950	2550	2700	3250	3450	3650	3850	3900	3950	3950	4050	3900
Cloud base (m)	6600		2550	2150	8900	6750	6450		1950	800					6950			9100	9350

	—	5:39	—	—	5:37	—	—	5:35	—	—	5:35	—	—	5:33	—	—	5:31	—	—
	—	—	—	8:27	—	—	8:29	—	—	8:30	—	—	8:30	—	—	8:32	—	—	8:34

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 11°C on Sat afternoon, min 4°C on Fri morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 18°C on Wed afternoon, min 4°C on Sun 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. 55 minutes ago	11° C	Dry	Calm (0 kph at 349).
Renton 30 km WSW 160m alt. 2 hours ago	9° C	Dry	Calm (0 kph at 107).
Black Diamond 32 km SSW 192m alt. 45 minutes ago	16° C	Dry	Calm (0 kph at 0).
Grotto wx 35 km NE 321m alt. 1 hour ago	8° C	Dry	Calm (2 kph at 63).
Renton Airport 36 km WSW 218m alt. 2 hours ago	11° C	Clear	Calm (0 kph at 0).	16 km
Grotto wx 39 km NE 1101m alt. 2 hours ago	2° C	-	Calm (0 kph at 331).
Auburn 39 km SW 119m alt. 1 hour ago	3° C	Dry	Calm (0 kph at 194).
Stampede Pass Airport 40 km SE 628m alt. 2 hours ago	5° C	Clear	Calm (0 kph at 0).	13 km
Woodinville 43 km WNW 137.2m alt. 1 hour ago	4° C	Dry	Calm (5 kph at 272).
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	12° C	Clear	Light winds from the SSE (6 kph at 150).	16 km

* 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.