– 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 SummaryHeavy rain (total 61mm), mostly on Mon morning. Becoming colder with a light covering of snow ,mostly falling on Tue morning. Very mild (max 11°C on Sat afternoon, min 1°C on Mon night). Winds increasing (light winds from the SW on Sun morning, near gales from the SW by Mon afternoon). | Days 5–7 Weather SummaryHeavy rain (total 43mm) on Tue night. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 4°C on Tue afternoon, min -3°C on Fri morning). Winds decreasing (near gales from the WSW on Tue night, light winds from the SE by Thu afternoon). | ||||||||||||||||
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 rain | light rain | cloudy | heavy rain | heavy rain | heavy rain | light snow | light snow | heavy rain | mod. snow | light snow | light snow | mod. snow | light snow | light snow | mod. snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 4 | 2 | — | 6 | 4 | 2 | 8 | 3 | 5 | 6 | |
— | 2 | 0.5 | — | 22 | 21 | 11 | — | 4 | 11 | 32 | — | — | — | — | — | — | |
max°C | 11 | 10 | 7 | 7 | 9 | 9 | 8 | 2 | 3 | 4 | 3 | -1 | -1 | 1 | 0 | 1 | 0 |
min°C | 11 | 5 | 6 | 7 | 7 | 9 | 4 | 1 | 1 | 3 | -2 | -1 | -1 | 0 | 0 | 0 | -2 |
10 | 2 | 4 | 5 | 4 | 5 | -3 | -5 | -3 | -2 | -10 | -8 | -8 | -6 | -5 | -2 | -6 | |
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: Heavy rain (total 61mm), mostly on Mon morning. Becoming colder with a light covering of snow ,mostly falling on Tue morning. Very mild (max 11°C on Sat afternoon, min 1°C on Mon night). Winds increasing (light winds from the SW on Sun morning, near gales from the SW by Mon afternoon).
Mount Index Weather (Days 3-6):
Heavy rain (total 43mm) on Tue night. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 4°C on Tue afternoon, min -3°C on Fri morning). Winds decreasing (near gales from the WSW on Tue night, light winds from the SE 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 |  | ||||
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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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