– Lat/Long: 47.77° N 121.58° W
Mount Index
Weather Forecast, United StatesIssued: 3 pm Sun 14 Dec Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sun 14 Dec Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sun 14 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 93mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Wed morning. Freeze-thaw conditions (max 9°C on Sun night, min -2°C on Tue night). Winds decreasing (gales from the SW on Mon afternoon, light winds from the S by Tue morning). | Days 5–7 Weather SummaryA heavy fall of snow, heaviest during Thu morning. Becoming milder with light rain (total 3mm) on Thu afternoon. Freeze-thaw conditions (max 4°C on Thu afternoon, min -3°C on Fri morning). Winds increasing (light winds from the SW on Wed night, strong winds from the SW by Thu afternoon). | ||||||||||||||||
Sun 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | | | | | | |  | | | | |
light rain | heavy rain | heavy rain | mod. rain | light snow | light snow | heavy rain | light snow | light snow | light snow | light snow | light snow | light snow | mod. snow | light snow | light snow | mod. snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | 4 | 2 | — | 4 | 5 | 3 | 1 | 4 | 1 | 7 | 4 | 2 | 7 | |
0.3 | 28 | 19 | 8 | — | 4 | 11 | 24 | — | — | — | — | 3 | — | — | — | — | |
max°C | 7 | 9 | 9 | 6 | 1 | 5 | 5 | 4 | -1 | -1 | 0 | 1 | 4 | 0 | -2 | -3 | -2 |
min°C | 6 | 8 | 9 | 3 | 1 | 1 | 4 | -2 | -2 | -1 | -1 | 0 | 2 | -2 | -3 | -3 | -2 |
4 | 5 | 5 | -3 | -5 | -2 | -1 | -10 | -9 | -8 | -6 | -5 | -4 | -7 | -8 | -7 | -8 | |
2150 | 2800 | 2900 | 1900 | 1100 | 1200 | 1850 | 1450 | 750 | 900 | 950 | 950 | 1650 | 800 | 650 | 600 | 700 | |
Cloud base (m) | 750 | 600 | 600 | 600 | 650 | 600 | 550 | 550 | 650 | 650 | 600 | 550 | 550 | 550 | 600 | 600 | 600 |
 | — | — | 7:48 | — | — | 7:48 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — |
 | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:14 | — | — | 4:15 | — | — | 4:15 | — |
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Mount Index Weather (Days 0-3):
The weather forecast for Mount Index is: Mild with heavy rain (total 93mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Wed morning. Freeze-thaw conditions (max 9°C on Sun night, min -2°C on Tue night). Winds decreasing (gales from the SW on Mon afternoon, light winds from the S by Tue morning).
Mount Index Weather (Days 3-6):
A heavy fall of snow, heaviest during Thu morning. Becoming milder with light rain (total 3mm) on Thu afternoon. Freeze-thaw conditions (max 4°C on Thu afternoon, min -3°C on Fri morning). Winds increasing (light winds from the SW on Wed night, strong winds from the SW by Thu 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 |  | ||||
| |||||
* 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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