– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 3 am Fri 12 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 am Fri 12 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 am Fri 12 Dec Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–3 Weather SummaryA dusting of snow giving way to moderate rain (total 15mm) heaviest on Sun night. Mild temperatures (max 7°C on Sat afternoon, min 1°C on Sat night). Winds increasing (light winds from the WSW on Fri night, strong winds from the SSW by Sun night). | Days 4–6 Weather SummaryHeavy rain (total 23mm) on Mon morning. Becoming colder with heavy fall of snow, heaviest during Tue afternoon. Freeze-thaw conditions (max 4°C on Mon morning, min -7°C on Tue night). Winds decreasing (severe gales from the WSW on Tue night, moderate winds from the S by Wed night). | |||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  |  |  |  |  | |  |  |  |  | | | | |
light rain | light rain | rain shwrs | clear | some clouds | light snow | light snow | cloudy | heavy rain | heavy rain | light snow | mod. snow | mod. snow | heavy snow | heavy snow | mod. snow | light snow | mod. snow | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
— | — | — | — | — | 1 | 1 | — | — | — | 3 | 6 | 8 | 15 | 11 | 6 | 5 | 10 | |
1.2 | 0.7 | 0.9 | — | — | — | — | — | 12 | 17 | 6 | — | — | — | — | — | — | — | |
max°C | 3 | 3 | 4 | 6 | 7 | 6 | 2 | 3 | 4 | 4 | 3 | -2 | 0 | 0 | -6 | -6 | -5 | -4 |
min°C | 3 | 2 | 3 | 6 | 7 | 1 | 1 | 3 | 3 | 4 | 0 | -2 | -2 | -1 | -7 | -7 | -6 | -6 |
-3 | -4 | -3 | 2 | 3 | -5 | -5 | -2 | -3 | -2 | -9 | -11 | -10 | -11 | -20 | -18 | -14 | -15 | |
2650 | 2800 | 3300 | 3100 | 3000 | 2500 | 2050 | 2350 | 2500 | 2750 | 2300 | 1500 | 1550 | 1800 | 750 | 850 | 900 | 800 | |
Cloud base (m) | 650 | 650 | 650 | 9200 | 7000 | 5450 | 650 | 850 | 800 | 600 | 600 | 600 | 600 | 500 | 600 | 600 | 600 | 1550 |
 | 7:46 | — | — | 7:47 | — | — | 7:47 | — | — | 7:48 | — | — | 7:48 | — | — | 7:50 | — | — |
 | — | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:14 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: A dusting of snow giving way to moderate rain (total 15mm) heaviest on Sun night. Mild temperatures (max 7°C on Sat afternoon, min 1°C on Sat night). Winds increasing (light winds from the WSW on Fri night, strong winds from the SSW by Sun night).
Mount Index Weather (Days 3-6):
Heavy rain (total 23mm) on Mon morning. Becoming colder with heavy fall of snow, heaviest during Tue afternoon. Freeze-thaw conditions (max 4°C on Mon morning, min -7°C on Tue night). Winds decreasing (severe gales from the WSW on Tue night, moderate winds from the S by Wed night).
This table gives the weather forecast for Mount Index at the specific elevation of 1832 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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
 | |||||
 | |||||
BUOY-46120 | |||||
Seattl / oeing Airport | | ||||
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* 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.
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