Walnut

Sweetwater County, California, United States

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Current Weather

18°

Clear

Feels Like: 18°

Min: 17°

Max: 27°

The next few hours will be clear, with today reaching 27°C and dropping to 17°C. The coming days will be clear

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Hourly Forecast

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Daylight Hours

06:40

Sunrise

18:50

Sunset

12 hours 9 minutes of sunlight today

Moon

Waxing Crescent

12:16

Moonrise

21:20

Moonset

Daily Forecast

Today

17°
27°

Thursday

17°
25°

Friday

16°
26°

Saturday

17°
28°

Sunday

18°
28°

Monday

18°
27°

Tuesday

17°
28°

Wednesday

18°
29°

Thursday

19°
28°

Friday

19°
29°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

82% Humid
Low High

Weather in Walnut today, September 16, 2026

Cloud cover dominates in Walnut on September 16, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. Cloud leads the morning, peaking close to 83% near 10:00. Sunshine has little room until later in the day.

The day peaks near 27°C and cools toward 17°C. Expect humidity between 47% and 89%, most humid near 23:00. Winds stay light, near 4.6 km/h by 16:00, so the day feels still more than breezy.

Afternoon conditions open up, holding cloud close to 43% near 23:00. The day finishes on a milder, brighter note. Horizontal visibility holds close to 16.1 km. Expect sunrise at 06:40, sunset at 18:50, and 12 hours 9 minutes of sunlight today overall.

The practical takeaway for Walnut on September 16, 2026 is a cloudy day that stays usable, just not particularly bright, around 27°C.

Frequently asked questions about weather in Walnut

How warm does it get in Walnut?

The warmest month in Walnut is August, with average high temperatures of 31°C. The average temperature during this period is around 25°C.

How cold does it get in Walnut?

The coldest month in Walnut is January, with average low temperatures of 7°C. The average temperature during this period is around 12°C.

What is the wettest time of year in Walnut?

The wettest month in Walnut is January, with an average of 94mm of precipitation.

What is the driest time of year in Walnut?

The driest month in Walnut is July, with an average of 1mm of precipitation.

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Metric (°C, km/h)