La Mesa

Whatcom County, California, United States

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Current Weather

17°

Mostly Clear

Feels Like: 19°

Min: 17°

Max: 24°

The next few hours will be overcast, with tomorrow reaching 24°C and dropping to 18°C. The coming days will be mostly clear until afternoon, returning overnight.

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Hourly Forecast

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Today
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Daylight Hours

06:36

Sunrise

18:49

Sunset

12 hours 13 minutes of sunlight today

Moon

Waxing Crescent

10:07

Moonrise

20:13

Moonset

Daily Forecast

Monday

17°
24°

Today

17°
24°

Wednesday

18°
24°

Thursday

17°
25°

Friday

17°
26°

Saturday

17°
26°

Sunday

17°
25°

Monday

17°
24°

Tuesday

18°
25°

Wednesday

17°
24°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

97% Very Humid
Low High

Weather in La Mesa tomorrow, September 15, 2026

La Mesa stays under cloudy skies on September 15, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. Cloud leads the morning, peaking close to 100% near 01:00. Sunshine has little room until later in the day.

Temperatures climb from an overnight low near 17°C toward a daytime high of about 24°C. The air stays humid, with relative humidity between 66% and 98% and the peak around 00:00. Winds stay light, near 4.6 km/h by 15:00, so the day feels still more than breezy.

Afternoon skies stay clogged, peaking close to 100% near 14:00. The grey theme continues rather than clearing out. Visibility holds near 14.9 km, though it can fall to 12.2 km. The sun rises at 06:36 and sets at 18:48, for a total of 12 hours 11 minutes of sunlight today.

Overall, La Mesa on September 15, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 24°C.

Frequently asked questions about weather in La Mesa

How warm does it get in La Mesa?

The warmest month in La Mesa is August, with average high temperatures of 28°C. The average temperature during this period is around 23°C.

How cold does it get in La Mesa?

The coldest month in La Mesa is January, with average low temperatures of 9°C. The average temperature during this period is around 13°C.

What is the wettest time of year in La Mesa?

The wettest month in La Mesa is March, with an average of 67mm of precipitation.

What is the driest time of year in La Mesa?

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

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Metric (°C, km/h)