– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 3 pm Mon 15 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Mon 15 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Mon 15 Dec Local Time
Updates in:
Update imminent hr min s
2 Mount Index Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 68mm) on Tue night. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 6°C on Tue night, min -2°C on Wed morning). Winds decreasing (gales from the WSW on Mon afternoon, light winds from the SSW by Wed night). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Thu night. Becoming milder with light rain (total 7mm) on Sun morning. Freeze-thaw conditions (max 3°C on Thu afternoon, min -3°C on Thu night). Winds decreasing (strong winds from the SW on Thu afternoon, calm by Sat afternoon). | ||||||||||||||||
Mon 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | | | |  | |  | | |  |  | |
mod. rain | light snow | heavy rain | heavy rain | mod. snow | light snow | light snow | light snow | light snow | light snow | heavy snow | light snow | mod. snow | light snow | light snow | some clouds | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | 4 | — | — | 10 | 4 | 3 | 3 | 1 | 1 | 11 | 2 | 6 | 5 | 1 | — | — | |
6 | — | 11 | 16 | 30 | — | — | — | 5 | 1.6 | — | — | — | — | — | — | — | |
max°C | 5 | 2 | 5 | 5 | 6 | -1 | -1 | 0 | 3 | 3 | -1 | -2 | -2 | -2 | -1 | -1 | 0 |
min°C | 3 | 1 | 3 | 5 | -1 | -2 | -1 | 0 | 0 | 2 | -3 | -3 | -2 | -2 | -2 | -2 | -2 |
-3 | -3 | -2 | -1 | -10 | -10 | -8 | -4 | -5 | -5 | -8 | -8 | -7 | -8 | -6 | -2 | -4 | |
1800 | 1250 | 1700 | 1850 | 1800 | 750 | 900 | 950 | 950 | 1400 | 700 | 650 | 750 | 700 | 750 | 750 | 0 | |
Cloud base (m) | 600 | 600 | 600 | 550 | 550 | 650 | 650 | 600 | 550 | 550 | 600 | 600 | 600 | 600 | 600 | 600 | 600 |
 | — | — | 7:48 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — |
 | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Heavy rain (total 68mm) on Tue night. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 6°C on Tue night, min -2°C on Wed morning). Winds decreasing (gales from the WSW on Mon afternoon, light winds from the SSW by Wed night).
Mount Index Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu night. Becoming milder with light rain (total 7mm) on Sun morning. Freeze-thaw conditions (max 3°C on Thu afternoon, min -3°C on Thu night). Winds decreasing (strong winds from the SW on Thu afternoon, calm by Sat 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.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
 | |||||
| |||||
BUOY-46120 | |||||
Seattl / oeing Airport | | ||||
SHIP5876 | |||||
SHIP2786 | |||||
SHIP7947 |
* 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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