– Lat/Long: 48.16° N 120.93° W
Fortress Mountain Weather Forecast
Cascade Range · United StatesIssued: 10 am Thu 15 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Thu 15 Oct Local Time
Updates in:
Update imminent hr min s
3 Fortress Mountain Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 8°C on Thu afternoon, min -5°C on Sat afternoon). Winds increasing (calm on Thu morning, near gales from the WSW by Sat morning). | Days 4–6 Weather SummaryMostly dry. Freeze-thaw conditions (max 1°C on Sun afternoon, min -2°C on Mon night). Wind will be generally light. | |||||||||||||||||
Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | |  |  |  | |  | |  |  | | | | | | |
clear | clear | clear | clear | clear | some clouds | light snow | snow shwrs | clear | some clouds | some clouds | cloudy | cloudy | cloudy | cloudy | some clouds | some clouds | clear | |
Cloud base (m) | 9650 | 9200 | 8250 | 8450 | 1650 | 1600 | 6950 | 4700 | 4950 | 5550 | 3450 | 2600 | 3000 | 8950 | ||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | 3 | 1 | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 7 | 8 | 6 | 7 | 7 | 5 | -1 | -3 | -2 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
min °C | 5 | 7 | 5 | 5 | 7 | 1 | -3 | -5 | -5 | -1 | 1 | 0 | 0 | 0 | -2 | -1 | 0 | 0 |
chill °C | 4 | 4 | 2 | 1 | 3 | -7 | -11 | -14 | -14 | -4 | -2 | -3 | -4 | -4 | -6 | -5 | -2 | -3 |
Freezing level m | 4000 | 4050 | 3800 | 3850 | 3700 | 3150 | 2250 | 2150 | 1500 | 2750 | 2950 | 2700 | 2800 | 2700 | 2550 | 2700 | 2750 | 2600 |
 | 7:22 | — | — | 7:24 | — | — | 7:24 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — |
 | — | 6:15 | — | — | 6:13 | — | — | 6:10 | — | — | 6:08 | — | — | 6:07 | — | — | 6:06 | — |
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Fortress Mountain Weather (Days 0-3):
The weather forecast for Fortress Mountain is: A dusting of new snow. Freeze-thaw conditions (max 8°C on Thu afternoon, min -5°C on Sat afternoon). Winds increasing (calm on Thu morning, near gales from the WSW by Sat morning).
Fortress Mountain Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 1°C on Sun afternoon, min -2°C on Mon night). Wind will be generally light.
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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* 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.