Alpine

Whatcom County, California, United States

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Current Weather

16°

Foggy

Feels Like: 16°

Min: 14°

Max: 25°

The next few hours will be foggy, with today reaching 25°C and dropping to 15°C. The coming days will be clear from afternoon until night.

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Hourly Forecast

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Today
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Daylight Hours

06:35

Sunrise

18:47

Sunset

12 hours 11 minutes of sunlight today

Moon

Waxing Crescent

11:08

Moonrise

20:43

Moonset

Daily Forecast

Today

14°
25°

Wednesday

14°
23°

Thursday

15°
26°

Friday

15°
27°

Saturday

15°
28°

Sunday

15°
27°

Monday

16°
26°

Tuesday

16°
27°

Wednesday

15°
22°

Thursday

15°
22°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

100% Very Humid
Low High

Weather in Alpine today, September 15, 2026

Expect reduced visibility in Alpine on September 15, 2026 where fog patches form. Allow more time for morning journeys if the air stays thick. Expect a grey start, with morning cloud around 100% by 04:00. Outdoor plans early on should not rely on bright skies.

The temperature range runs from about 14°C up to 25°C. The air stays humid, with relative humidity between 51% and 100% and the peak around 04:00. Expect gentle winds, highest near 14:00 at 5.3 km/h.

Afternoon skies stay clogged, peaking close to 100% near 19:00. The grey theme continues rather than clearing out. Visibility holds near 12.2 km, though it can fall to 0.1 km. Expect sunrise at 06:35, sunset at 18:47, and 12 hours 11 minutes of sunlight today overall.

The practical takeaway for Alpine on September 15, 2026 is reduced clarity at times, so plan journeys with care near 25°C.

Frequently asked questions about weather in Alpine

How warm does it get in Alpine?

The warmest month in Alpine is August, with average high temperatures of 31°C. The average temperature during this period is around 24°C.

How cold does it get in Alpine?

The coldest month in Alpine is January, with average low temperatures of 7°C. The average temperature during this period is around 11°C.

What is the wettest time of year in Alpine?

The wettest month in Alpine is March, with an average of 90mm of precipitation.

What is the driest time of year in Alpine?

The driest month in Alpine is June, with an average of 2mm of precipitation.

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