– Lat/Long: 48.16° N 120.93° W
Fortress Mountain Weather Forecast
Cascade Range · United StatesIssued: 10 am Thu 24 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Thu 24 Sep Local Time
Updates in:
Update imminent hr min s
3 Fortress Mountain Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA moderate fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 5°C on Thu afternoon, min -7°C on Fri night). Winds decreasing (strong winds from the SSW on Thu night, calm by Sat night). | Days 4–6 Weather SummaryA heavy fall of snow, heaviest during Tue morning. Freeze-thaw conditions (max 1°C on Mon night, min -6°C on Tue night). Winds increasing (light winds from the WNW on Sun morning, gales from the WSW by Mon night). | |||||||||||||||||
Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | |  |  | | |  | | |  |  |  | | |
some clouds | cloudy | light snow | light snow | light snow | mod. snow | cloudy | clear | some clouds | some clouds | clear | cloudy | clear | some clouds | snow shwrs | heavy snow | snow shwrs | some clouds | |
Cloud base (m) | 4850 | 3050 | 2200 | 1600 | 1600 | 1600 | 1600 | 1700 | 6500 | 6750 | 7700 | 5750 | 6500 | 6200 | 1800 | 1600 | 1600 | 1700 |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | 2 | 3 | 4 | 7 | — | — | — | — | — | — | — | — | 4 | 11 | 6 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 4 | 5 | 4 | -1 | -2 | -5 | -4 | -2 | -2 | 0 | 0 | -1 | 0 | 0 | 1 | -1 | -1 | -5 |
min °C | 3 | 4 | 0 | -2 | -3 | -7 | -6 | -3 | -3 | -2 | 0 | -2 | -1 | 0 | -1 | -1 | -3 | -6 |
chill °C | -1 | -1 | -5 | -7 | -10 | -16 | -12 | -8 | -3 | -4 | -3 | -8 | -7 | -5 | -7 | -10 | -13 | -16 |
Freezing level m | 3350 | 3500 | 2800 | 2400 | 2300 | 1550 | 1950 | 2300 | 2100 | 2600 | 2700 | 2250 | 2700 | 2700 | 2950 | 2450 | 2200 | 1600 |
 | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | 6:58 | — | — | 6:54 | — | — | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:46 | — |
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Fortress Mountain Weather (Days 0-3):
The weather forecast for Fortress Mountain is: A moderate fall of snow, heaviest on Fri night. Freeze-thaw conditions (max 5°C on Thu afternoon, min -7°C on Fri night). Winds decreasing (strong winds from the SSW on Thu night, calm by Sat night).
Fortress Mountain Weather (Days 3-6):
A heavy fall of snow, heaviest during Tue morning. Freeze-thaw conditions (max 1°C on Mon night, min -6°C on Tue night). Winds increasing (light winds from the WNW on Sun morning, gales from the WSW by Mon night).
This table gives the weather forecast for Fortress Mountain at the specific elevation of 2670 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Fortress Mountain. 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 |
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Winthrop Airport (Washington) |  | ||||
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BUOY-PBFW1 | |||||
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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.