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Costello, LA Weather Forecast

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Costello, LA Weather Forecast

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Costello LA weather - Clear - 92°F
Clear
92°F
Updated 2:48 pm
Feels Like 88°F
Humidity 32%
Wind N 0 mph
Barometer  29.94 in
Dew Point 59°F
Costello LA weather - Clear - 33°C
Clear
33°C
Updated 2:48 pm
Feels Like 31°C
Humidity 32%
Wind N 0 km/h
Barometer  101.3 kPa
Dew Point 15°C
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Costello Weather Forecast

THIS AFTERNOON TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY THURSDAY THURSDAY NIGHT FRIDAY SATURDAY
Costello, LA Weather - This Afternoon Sunny Costello, LA Weather - Tonight Partly Cloudy Costello, LA Weather - Monday Sunny Costello, LA Weather - Monday Night Mostly Clear Costello, LA Weather - Tuesday Sunny Costello, LA Weather - Tuesday Night Partly Cloudy Costello, LA Weather - Wednesday Partly Cloudy Costello, LA Weather - Thursday Chance Of Showers Costello, LA Weather - Thursday Night Chance Of Showers Costello, LA Weather - Friday Chance Of Showers Costello, LA Weather - Saturday Chance Of Showers
Sunny Partly Cloudy Sunny Mostly Clear Sunny Partly Cloudy Partly Cloudy Chance of Showers Chance of Showers Chance of Showers Chance of Showers
Hi: 89°FHi: 32°C
 Lo: 61°FLo: 16°C Hi: 89°FHi: 32°C
 Lo: 61°FLo: 16°C Hi: 90°FHi: 32°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
 Hi: 85°FHi: 29°C
Lo: 69°FLo: 21°C		 Hi: 85°FHi: 29°C
Lo: 69°FLo: 21°C		 Hi: 81°FHi: 27°C
POP: 40% POP: 50% POP: 50% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 146 PM CDT Sun Sep 27 2026 Costello, LA Weather - WeatherWorld.com

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Issued: 108 PM CDT Sun Sep 27 2026

Key Messages

  • A dry airmass remains over the region through at least Tuesday, with a gradual warming trend.
  • Rain chances return to the region, particularly Thursday into the weekend when heavier rainfall may be possible.

Discussion

... Issued at 102 PM CDT Sun Sep 27 2026

Tonight through Saturday...Northwest flow aloft persists across the region as ridging aloft remains wedged into the Lower Mississippi River Valley from the west. Meanwhile at the surface, high pressure centered over the Great Lakes...