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Costello, LA Weather Forecast

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Costello, LA Weather Forecast

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Costello LA weather - Overcast - 73°F
Overcast
73°F
Updated 4:31 am
Feels Like 75°F
Humidity 76%
Wind NE 5 mph
Barometer  30.06 in
Dew Point 66°F
Costello LA weather - Overcast - 23°C
Overcast
23°C
Updated 4:31 am
Feels Like 24°C
Humidity 76%
Wind NE 8 km/h
Barometer  101.7 kPa
Dew Point 19°C
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Costello Weather Forecast

TODAY TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY MONDAY TUESDAY
Costello, LA Weather - Today Mostly Sunny Costello, LA Weather - Tonight Mostly Clear Costello, LA Weather - Thursday Mostly Sunny Costello, LA Weather - Thursday Night Partly Cloudy Costello, LA Weather - Friday Mostly Sunny Costello, LA Weather - Friday Night Mostly Cloudy Costello, LA Weather - Saturday Mostly Sunny Costello, LA Weather - Saturday Night Mostly Cloudy Costello, LA Weather - Sunday Partly Cloudy Costello, LA Weather - Monday Partly Cloudy Costello, LA Weather - Tuesday Chance Of Showers
Mostly Sunny Mostly Clear Mostly Sunny Partly Cloudy Mostly Sunny Mostly Cloudy Mostly Sunny Mostly Cloudy Partly Cloudy Partly Cloudy Chance of Showers
Hi: 91°FHi: 33°C
 Lo: 65°FLo: 18°C Hi: 89°FHi: 32°C
 Lo: 65°FLo: 18°C Hi: 91°FHi: 33°C
 Lo: 65°FLo: 18°C Hi: 91°FHi: 33°C
 Lo: 65°FLo: 18°C Hi: 91°FHi: 33°C
Lo: 69°FLo: 21°C		 Hi: 91°FHi: 33°C
Lo: 69°FLo: 21°C		 Hi: 91°FHi: 33°C
POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 321 AM CDT Wed Sep 23 2026 Costello, LA Weather - WeatherWorld.com

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Costello Forecast Discussion

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Issued: 204 AM CDT Wed Sep 23 2026

Key Messages

  • A drier airmass across the region will yield less humid conditions, with closer to normal highs, and cool lows.

Discussion

... Issued at 201 AM CDT Wed Sep 23 2026

Today through next Tuesday...A frontal boundary will continue to slowly sink south through the forecast area today. During the afternoon hours today, as highs warm into the middle 90s across mainly southern portions of the CWA, a stray shower or storm can`t be ruled out in the vicinity of this boundary. The remainder of the...