– Lat/Long: 47.51° N 121.74° W

Mount Si
Weather Forecast, United States
Issued: 10 pm Thu 25 Jun Local Time
Updates in:
hr min s
Update imminent

Issued: 10 pm Thu 25 Jun Local Time

Updates in:

hr min s

Update imminent

2 Mount Si Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Moderate rain (total 19mm), heaviest on Fri morning. Very mild (max 13°C on Thu night, min 9°C on Fri night). Wind will be generally light.										Days 5–7 Weather Summary Some drizzle, heaviest during Mon night. Very mild (max 13°C on Mon afternoon, min 10°C on Sun night). Wind will be generally light.
		Friday 26			Saturday 27			Sunday 28			Monday 29			Tuesday 30			Wednesday 1
	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	light rain	light rain	rain shwrs	rain shwrs	rain shwrs	light rain	rain shwrs	light rain	light rain	light rain	light rain	light rain	light rain	light rain	light rain	rain shwrs	rain shwrs	rain shwrs	some clouds
km/h	SW	SW	SW	SW	W	NW	WSW	WSW	WSW	W	WSW	WSW	WSW	SW	WSW	WNW	WSW	WSW	S
See all weather maps
cm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
mm	3	4	3	5	1.7	1.1	0.5	0.1	0.2	0.3	0.1	0.1	0.5	0.1	0.2	0.1	0.1	0.2	—
max °C	13	12	12	12	10	13	13	11	13	12	11	13	13	10	12	12	12	13	14
min °C	11	11	12	9	9	12	10	10	12	10	10	12	10	10	11	10	10	12	7
chill °C	11	9	11	8	8	12	10	10	12	10	10	12	10	10	11	10	10	12	6

Freezing level m	3000	2500	2400	2100	1950	2350	2600	3100	3200	3350	3400	3400	3150	3250	3200	3150	2900	2950	3050
Cloud base (m)	400	400	500	550	1650	1650	1950	800	750	550	450	600	400	400	600	700	700	750	6700

	—	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:13	—	—
	—	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07

Mount Si Weather (Days 0-3):

The weather forecast for Mount Si is: Moderate rain (total 19mm), heaviest on Fri morning. Very mild (max 13°C on Thu night, min 9°C on Fri night). Wind will be generally light.

Mount Si Weather (Days 3-6):

Some drizzle, heaviest during Mon night. Very mild (max 13°C on Mon afternoon, min 10°C on Sun 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. 2 hours ago	13° C	Dry	Calm (0 kph at 357).
Snoqualmie Pass 30 km ESE 824m alt. 28 minutes ago	11° C	-	Calm (0 kph at 174).
Renton 30 km WSW 160m alt. 3 hours ago	13° C	Dry	Calm (0 kph at 173).
Grotto wx 35 km NE 321m alt. 2 hours ago	12° C	Dry	Calm (5 kph at 268).
Renton Airport 36 km WSW 218m alt. 1 hour ago	14° C	Mist -.	Light winds from the SSE (9 kph at 150).	10 km Low: few Mid: scattered High: overcast
Grotto wx 39 km NE 1101m alt. 51 minutes ago	8° C	Dry	Calm (0 kph at 46).
Auburn 39 km SW 119m alt. 50 minutes ago	16° C	Dry	Calm (0 kph at 98).
Stampede Pass Airport 40 km SE 628m alt. 1 hour ago	7° C	Light rain .	Wind obs. (6 kph from 1 degs) was rejected.	0 km
SHIP8228 42 km WSW 3m alt. 3 hours ago	13° C
SHIP1481 42 km WSW 15m alt. 3 hours ago				- 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.