– Lat/Long: 47.64° N 120.91° W
Grindstone Mountain Weather Forecast
Cascade Range · United StatesIssued: 4 pm Sun 20 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sun 20 Sep Local Time
Updates in:
Update imminent hr min s
3 Grindstone Mountain Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Warm (max 27°C on Sun afternoon, min 10°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryModerate rain (total 10mm), heaviest on Thu night. Very mild (max 19°C on Wed afternoon, min 7°C on Fri morning). Wind will be generally light. | ||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | | | | | | |  | |  | |  | | |
clear | clear | clear | some clouds | some clouds | some clouds | clear | some clouds | some clouds | some clouds | some clouds | light rain | light rain | mod. rain | light rain | rain shwrs | some clouds | |
Cloud base (m) | 9500 | 6500 | 900 | 900 | 2200 | 5450 | 5300 | 5000 | 2800 | 2300 | 850 | 900 | 1600 | 4550 | |||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 0.5 | 0.9 | 6 | 1.8 | 0.6 | — |
max °C | 27 | 20 | 25 | 26 | 16 | 16 | 18 | 11 | 16 | 19 | 14 | 15 | 19 | 12 | 8 | 11 | 9 |
min °C | 26 | 18 | 19 | 24 | 13 | 13 | 17 | 10 | 11 | 19 | 13 | 14 | 15 | 8 | 7 | 10 | 8 |
chill °C | 26 | 18 | 19 | 24 | 12 | 12 | 17 | 9 | 11 | 19 | 13 | 14 | 15 | 6 | 5 | 9 | 7 |
Freezing level m | 3950 | 4000 | 3800 | 3800 | 3750 | 3450 | 3050 | 2650 | 2900 | 2950 | 3350 | 3150 | 2750 | 2150 | 1750 | 2100 | 2450 |
 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — |
 | 7:06 | — | — | 7:04 | — | — | 7:01 | — | — | 7:00 | — | — | 6:57 | — | — | 6:54 | — |
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Grindstone Mountain Weather (Days 0-3):
The weather forecast for Grindstone Mountain is: Mostly dry. Warm (max 27°C on Sun afternoon, min 10°C on Tue night). Wind will be generally light.
Grindstone Mountain Weather (Days 3-6):
Moderate rain (total 10mm), heaviest on Thu night. Very mild (max 19°C on Wed afternoon, min 7°C on Fri morning). Wind will be generally light.
This table gives the weather forecast for Grindstone Mountain at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Grindstone 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) | | ||||
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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