– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 am Sun 26 Jul Local Time
Updates in:
hr min s
Update imminent

Issued: 10 am Sun 26 Jul Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–3 Weather Summary Mostly dry. Very mild (max 15°C on Mon afternoon, min 9°C on Sun morning). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Very mild (max 18°C on Fri afternoon, min 9°C on Wed morning). Wind will be generally light.
	Sunday 26			Monday 27			Tuesday 28			Wednesday 29			Thursday 30			Friday 31
	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	rain shwrs	some clouds	some clouds	clear	clear	clear	rain shwrs	rain shwrs	rain shwrs	some clouds	some clouds	clear	clear	some clouds	clear	clear	clear	clear
Cloud base (m)	850	1600	2900		2300		950	950	800	700	6550			6800				9650
km/h	SW	W	WSW	SW	WSW	WSW	SW	W	WNW	WNW	WNW	NW	W	WNW	W	W	WNW	WNW
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	0.1	—	—	—	—	—	0.1	0.2	0.3	—	—	—	—	—	—	—	—	—
max °C	10	13	12	11	15	14	10	13	11	10	14	13	13	14	13	15	18	17
min °C	9	12	10	10	14	10	10	11	9	9	13	10	11	14	12	13	16	14
chill °C	7	11	9	9	13	9	8	10	9	9	13	10	11	14	12	13	16	14

Freezing level m	3500	3250	3250	3450	3650	3900	3600	3750	4050	3950	3850	4100	4250	4100	4350	4500	4700	4600

	5:35	—	—	5:37	—	—	5:39	—	—	5:39	—	—	5:41	—	—	5:43	—	—
	—	—	8:49	—	—	8:47	—	—	8:45	—	—	8:45	—	—	8:44	—	—	8:42

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Mostly dry. Very mild (max 15°C on Mon afternoon, min 9°C on Sun morning). Wind will be generally light.

Mount Si Weather (Days 3-6):

Mostly dry. Very mild (max 18°C on Fri afternoon, min 9°C on Wed morning). 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
Renton 30 km WSW 160m alt. 44 minutes ago	22° C	Dry	Calm (5 kph at 219).
Renton Airport 36 km WSW 218m alt. 2 hours ago	23° C	Dry and partly cloudy.	Light winds from the N (11 kph at 1).	16 km Low: scattered
Auburn 39 km SW 119m alt. 53 minutes ago		-	Calm (2 kph at 213).
SHIP2912 43 km W 15m alt. 2 hours ago				- km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	23° C	Dry and partly cloudy.	Light winds from the WSW.(Wind varies from 210 to 290 degs) (15 kph at 250).	16 km Low: broken Mid: broken
SHIP4310 43 km W 15m alt. 1 hour ago				- km
SHIP3848 43 km W 3m alt. 2 hours ago	23° C
SHIP4638 43 km W 15m alt. 2 hours ago				- km
SHIP2209 43 km W 15m alt. 1 hour ago				- km
Seattl / oeing Airport 44 km WSW 218m alt. 2 hours ago	23° C	Dry and partly cloudy.	Light winds from the WSW.(Wind varies from 210 to 290 degs) (15 kph at 250).	16 km Low: broken Mid: broken

* 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.