– Lat/Long: 47.77° N 121.58° W

Mount Index
Weather Forecast, United States
Issued: 3 pm Sun 22 Dec Local Time
Updates in:
hr min s
Update imminent

Issued: 3 pm Sun 22 Dec Local Time

Updates in:

hr min s

Update imminent

2 Mount Index Elevations: 2 Forecast Elevations:

	Days 1–4 Weather Summary Mild with heavy rain (total 27mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Tue morning. Freeze-thaw conditions (max 6°C on Mon afternoon, min 0°C on Tue afternoon). Wind will be generally light.											Days 5–7 Weather Summary A heavy fall of snow, heaviest during Wed night. Becoming milder with light rain (total 6mm) on Fri night. Freeze-thaw conditions (max 3°C on Fri night, min -1°C on Wed night). Winds decreasing (near gales from the SW on Thu morning, light winds from the SE by Fri afternoon).
	Sun 22		Monday 23			Tuesday 24			Wednesday 25			Thursday 26			Friday 27
	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night

	mod. rain	heavy rain	rain shwrs	cloudy	light snow	light snow	light snow	light snow	cloudy	light snow	heavy snow	mod. snow	light snow	mod. snow	light snow	light snow	light snow
km/h	SSE	SW	ESE	ESE	ESE	WSW	WSW	WSW	SSW	ESE	ESE	S	SW	SW	SW	SE	SW
See all weather maps
cm	—	—	—	—	1.0	5	2.0	3	—	1.0	19	7	2.0	7	2.0	1.0	2.0
mm	7	15	0.6	—	5	—	—	—	—	—	—	—	—	—	—	—	5
max°C	4	3	4	6	4	1	1	0	1	0	1	1	1	1	1	1	3
min°C	3	2	3	5	1	1	0	0	0	0	-1	0	1	1	1	1	2
chill°C	0	-2	3	2	-1	-2	-4	-4	-3	-5	-7	-6	-5	-3	-4	-2	-2

Freezing level (m)	2000	1550	1400	2400	1600	1150	1150	1000	1000	1050	900	950	1200	1200	1100	1200	1500
Cloud base (m)	850	600	700	650	750	600	600	650	600	650	550	550	600	600	600	550	600

	—	—	7:52	—	—	7:54	—	—	7:54	—	—	7:54	—	—	7:54	—	—
	4:16	—	—	4:17	—	—	4:17	—	—	4:19	—	—	4:20	—	—	4:21	—

Mount Index Weather (Days 0-3):

The weather forecast for Mount Index is: Mild with heavy rain (total 27mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Tue morning. Freeze-thaw conditions (max 6°C on Mon afternoon, min 0°C on Tue afternoon). Wind will be generally light.

Mount Index Weather (Days 3-6):

A heavy fall of snow, heaviest during Wed night. Becoming milder with light rain (total 6mm) on Fri night. Freeze-thaw conditions (max 3°C on Fri night, min -1°C on Wed night). Winds decreasing (near gales from the SW on Thu morning, light winds from the SE by Fri afternoon).

This table gives the weather forecast for Mount Index at the specific elevation of 1000 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Mount Index. 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 5 closest weather stations

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Harman Heights wx 37 km S 251m alt. 1 hour ago	11° C	Dry	Calm (3 kph at 33).
Everett Airport 55 km W 218m alt. 1 hour ago	10° C	Dry and cloudy.	Light winds from the ESE (9 kph at 120).	16 km Low: overcast
Renton Airport 57 km SW 218m alt. 2 hours ago	10° C	Dry and cloudy.	Light winds from the S (9 kph at 170).	16 km Low: overcast
Stampede Pass Airport 58 km SSE 628m alt. 2 hours ago	-1° C	Light snow.	Light winds from the ENE (6 kph at 60).	1 km
Seattl / oeing Airport 61 km SW 218m alt. 2 hours ago	9° C	Dry and cloudy.	Light winds from the SSE (13 kph at 160).	16 km Low: overcast
Arlington Municipal Airport 62 km WNW 197m alt. 2 hours ago	10° C	Dry and cloudy.	Calm (0 kph at 0).	16 km Low: overcast
Black Diamond 64 km S 192m alt. 31 minutes ago	16° C	Dry	Calm (0 kph at 262).
Seattle 64 km SW 100m alt. 2 hours ago	7° C	-	Calm (0 kph at 80).
BUOY-WPOW1 66 km WSW 3m alt. 47 minutes ago	9° C		Light winds from the S (13 kph at 170).
Seattle Tacoma International Airport 66 km SW 218m alt. 2 hours ago	9° C	Light rain .	Moderate winds from the ESE (20 kph at 120).	16 km Low: overcast

* 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.