– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Mon 22 Jun Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Mon 22 Jun Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Mon 22 Jun Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Very mild (max 19°C on Tue afternoon, min 8°C on Thu morning). Wind will be generally light. | Days 5–7 Weather SummaryHeavy rain (total 23mm), heaviest during Fri afternoon. Very mild (max 10°C on Thu afternoon, min 2°C on Fri night). Wind will be generally light. | ||||||||||||||||
Mon 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  | |  |  |  |  |  |  | | | |
clear | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | clear | clear | cloudy | light rain | light rain | mod. rain | heavy rain | rain shwrs | rain shwrs | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | 0.8 | 1.2 | 9 | 11 | 0.2 | 0.5 | — |
max °C | 17 | 17 | 17 | 19 | 18 | 15 | 15 | 13 | 8 | 10 | 6 | 5 | 5 | 5 | 2 | 5 | 6 |
min °C | 16 | 17 | 17 | 18 | 16 | 14 | 14 | 10 | 8 | 7 | 5 | 5 | 5 | 2 | 2 | 4 | 4 |
chill °C | 16 | 17 | 17 | 18 | 16 | 14 | 14 | 9 | 7 | 5 | 3 | 3 | 2 | 0 | 2 | 3 | 3 |
Freezing level m | 3500 | 3650 | 3500 | 3650 | 3550 | 3400 | 3400 | 3300 | 3200 | 2800 | 2650 | 2550 | 2450 | 1900 | 2150 | 2750 | 2800 |
Cloud base (m) | 8900 | 3500 | 8000 | 6050 | 7350 | 1600 | 800 | 700 | 550 | 550 | 600 | 800 | 1900 | ||||
 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — |
 | — | 9:14 | — | — | 9:14 | — | — | 9:14 | — | — | 9:14 | — | — | 9:14 | — | — | 9:14 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 19°C on Tue afternoon, min 8°C on Thu morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 23mm), heaviest during Fri afternoon. Very mild (max 10°C on Thu afternoon, min 2°C on Fri night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 1500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. 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 |
|---|---|---|---|---|---|
 | |||||
Bellingham 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.