– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 3 pm Sat 13 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sat 13 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sat 13 Dec Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryMild with heavy rain (total 50mm), heaviest during Mon morning. Becoming colder with a moderate fall of snow heaviest on Tue morning. Freeze-thaw conditions (max 8°C on Sat afternoon, min -5°C on Mon night). Winds decreasing (severe gales from the SW on Mon afternoon, moderate winds from the SW by Mon night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -1°C on Tue afternoon, min -9°C on Fri morning). Winds decreasing (stormy winds from the WSW on Tue night, moderate winds from the W by Fri morning). | ||||||||||||||||
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  |  |  | |  | | | | | | | |
cloudy | light snow | cloudy | cloudy | heavy rain | heavy rain | light snow | mod. snow | mod. snow | mod. snow | heavy snow | mod. snow | light snow | heavy snow | light snow | mod. snow | heavy snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | 1 | — | — | — | — | 3 | 9 | 6 | 6 | 35 | 9 | 5 | 15 | 5 | 9 | 12 | |
— | 0.1 | — | — | 22 | 21 | 7 | — | — | — | — | — | — | — | — | — | — | |
max°C | 8 | 6 | 2 | 3 | 5 | 5 | 3 | -4 | -1 | -1 | -1 | -7 | -6 | -4 | -4 | -3 | -5 |
min°C | 7 | 1 | 2 | 2 | 3 | 4 | -2 | -5 | -3 | -1 | -8 | -7 | -7 | -6 | -4 | -3 | -8 |
3 | -6 | -4 | -4 | -3 | -4 | -12 | -14 | -11 | -9 | -20 | -18 | -17 | -16 | -12 | -12 | -16 | |
2950 | 2600 | 2250 | 2250 | 2700 | 2900 | 2450 | 1100 | 1200 | 1700 | 1400 | 800 | 850 | 1050 | 1050 | 1050 | 900 | |
Cloud base (m) | 800 | 1500 | 600 | 600 | 600 | 650 | 600 | 550 | 550 | 600 | 600 | 600 | 550 | 550 | 550 | ||
 | — | — | 7:47 | — | — | 7:48 | — | — | 7:48 | — | — | 7:50 | — | — | 7:50 | — | — |
 | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:15 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Mild with heavy rain (total 50mm), heaviest during Mon morning. Becoming colder with a moderate fall of snow heaviest on Tue morning. Freeze-thaw conditions (max 8°C on Sat afternoon, min -5°C on Mon night). Winds decreasing (severe gales from the SW on Mon afternoon, moderate winds from the SW by Mon night).
Mount Index Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue night. Temperatures will be below freezing (max -1°C on Tue afternoon, min -9°C on Fri morning). Winds decreasing (stormy winds from the WSW on Tue night, moderate winds from the W by Fri morning).
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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