– Lat/Long: 48.16° N 120.93° W
Fortress Mountain Weather Forecast
Cascade Range · United StatesIssued: 10 am Mon 21 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Mon 21 Sep Local Time
Updates in:
Update imminent hr min s
3 Fortress Mountain Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Freeze-thaw conditions (max 8°C on Mon morning, min -1°C on Tue night). Wind will be generally light. | Days 4–6 Weather SummaryA moderate fall of snow, heaviest on Fri morning. Freeze-thaw conditions (max 2°C on Thu morning, min -6°C on Fri afternoon). Winds decreasing (strong winds from the WNW on Fri afternoon, calm by Sat morning). | |||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | |  | | | |  |  | |  | | | | | |
clear | some clouds | some clouds | clear | clear | some clouds | cloudy | clear | some clouds | cloudy | light snow | light snow | light snow | snow shwrs | some clouds | clear | some clouds | some clouds | |
Cloud base (m) | 6400 | 1600 | 1650 | 1900 | 1600 | 5700 | 2600 | 6200 | 3300 | 1950 | 1600 | 1600 | 1600 | 1600 | 8600 | 8150 | 4200 | |
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 4 | 3 | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 8 | 8 | 6 | 4 | 4 | 1 | 0 | 1 | 2 | 2 | 1 | 1 | -4 | -6 | -3 | -1 | 2 | 1 |
min °C | 7 | 8 | 4 | 4 | 3 | -1 | -1 | 1 | 1 | 2 | 0 | -2 | -5 | -6 | -6 | -3 | 1 | -1 |
chill °C | 4 | 5 | 0 | 0 | -1 | -6 | -6 | -4 | -4 | -2 | -6 | -7 | -14 | -16 | -15 | -3 | -2 | -6 |
Freezing level m | 3750 | 3700 | 3600 | 3350 | 3100 | 2600 | 2750 | 2850 | 3150 | 2900 | 2850 | 2500 | 1800 | 1850 | 1400 | 2550 | 3100 | 2600 |
 | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 7:04 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:54 | — | — | 6:52 | — |
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Fortress Mountain Weather (Days 0-3):
The weather forecast for Fortress Mountain is: Mostly dry. Freeze-thaw conditions (max 8°C on Mon morning, min -1°C on Tue night). Wind will be generally light.
Fortress Mountain Weather (Days 3-6):
A moderate fall of snow, heaviest on Fri morning. Freeze-thaw conditions (max 2°C on Thu morning, min -6°C on Fri afternoon). Winds decreasing (strong winds from the WNW on Fri afternoon, calm by Sat morning).
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-46120 |
* 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.