Gretna, LA Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Gretna, LA.

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Current Conditions — Gretna, LA

NEW ORLEANS/INTL (KMSY)

Clear

84.2 F
Humidity:62%
Wind Speed: 17.3 G 24.2 mph
Barometer:29.99 in
Dewpoint:69.8 F
Visibility:10.00 mi
Precip:--
Heat Index:88.5 F
Wind Chill:NA
Apr 27 2026, 12:05 PM CDT
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5-Day Forecast — Gretna, LA

Monday

High 87 °F
Partly Sunny
Monday
Night
Low 71 °F
Mostly Cloudy
Tuesday

High 86 °F
Partly Sunny
Tuesday
Night
Low 71 °F
Mostly Cloudy
Wednesday

High 89 °F
Partly Sunny
Wednesday
Night
Low 71 °F
Chance of T-storms
Thursday

High 82 °F
Chance of T-storms
Thursday
Night
Low 68 °F
Slight Chance of Rain
Friday

High 80 °F
Chance of T-storms

Detailed Forecast — Gretna, LA

Monday
Partly Sunny. High near 87°F. Wind 10 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly Cloudy. Low around 71°F. Wind 6 to 10 mph, with gusts as high as 16 mph.
Tuesday
Partly Sunny. High near 86°F. Wind 6 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly Cloudy. Low around 71°F. Wind 6 to 9 mph, with gusts as high as 16 mph.
Wednesday
Partly Sunny. High near 89°F. Wind 6 to 10 mph, with gusts as high as 14 mph.
Wednesday Night
Chance of Thunderstorms. Low around 71°F. Wind around 6 mph, with gusts as high as 9 mph.
Thursday
Chance of Thunderstorms. High near 82°F. Wind 8 to 9 mph, with gusts as high as 13 mph.
Thursday Night
Slight Chance of Rain. Low around 68°F. Wind around 9 mph, with gusts as high as 15 mph.
Friday
Chance of Thunderstorms. High near 80°F. Wind 15 to 17 mph, with gusts as high as 24 mph.
Friday Night
Thunderstorms Likely. Low around 64°F. Wind around 16 mph, with gusts as high as 24 mph.
Saturday
Chance of Thunderstorms. High near 73°F. Wind 12 to 16 mph, with gusts as high as 23 mph.
Saturday Night
Chance of Thunderstorms. Low around 59°F. Wind around 10 mph, with gusts as high as 16 mph.
Sunday
Isolated T-storm. High near 75°F. Wind 7 to 10 mph, with gusts as high as 14 mph.
LA Radar
Current Radar • LA
Day 1 Outlook • April 27, 2026

Observation History — Gretna, LA

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
12:05 PM CDT 17.3 G 24.2 10.00 Clear -- 84.2 69.8 62% NA 88.5 29.99 1015.6
12:00 PM CDT 15.0 G 20.7 10.00 Clear -- 82.4 71.6 70% NA 87.3 29.99 1015.6
11:50 AM CDT S 12.7 G 18.4 10.00 Mostly Clear -- 84.2 71.6 66% NA 89.6 29.99 1015.6
11:45 AM CDT 15.0 10.00 Clear -- 82.4 71.6 70% NA 87.3 29.99 1015.6
11:35 AM CDT 16.1 G 21.9 10.00 Clear -- 82.4 71.6 70% NA 87.3 29.99 1015.6
11:25 AM CDT 16.1 10.00 Clear -- 82.4 71.6 70% NA 87.3 29.99 1015.6
11:20 AM CDT S 16.1 G 21.9 10.00 Clear -- 82.4 69.8 66% NA 86.2 29.98 1015.2
11:15 AM CDT S 13.8 10.00 Clear -- 82.4 71.6 70% NA 87.3 29.98 1015.2
11:10 AM CDT 13.8 10.00 Clear -- 82.4 71.6 70% NA 87.3 29.98 1015.2
11:05 AM CDT 15.0 G 20.7 10.00 Clear -- 82.4 71.6 70% NA 87.3 29.98 1015.2
11:00 AM CDT 12.7 G 18.4 10.00 Clear -- 82.4 69.8 66% NA 86.2 29.98 1015.2
10:45 AM CDT 13.8 G 21.9 10.00 Clear -- 82.4 69.8 66% NA 86.2 29.98 1015.2
10:40 AM CDT 17.3 10.00 Clear -- 82.4 69.8 66% NA 86.2 29.98 1015.2
10:35 AM CDT 16.1 G 24.2 10.00 Clear -- 82.4 69.8 66% NA 86.2 29.98 1015.2
10:25 AM CDT 13.8 10.00 Clear -- 82.4 69.8 66% NA 86.2 29.97 1014.9
10:20 AM CDT 13.8 G 20.7 10.00 Clear -- 82.4 69.8 66% NA 86.2 29.97 1014.9
10:15 AM CDT 16.1 10.00 Clear -- 80.6 69.8 70% NA 83.8 29.97 1014.9
10:10 AM CDT 16.1 10.00 Clear -- 80.6 71.6 74% NA 84.6 29.97 1014.9
10:05 AM CDT 15.0 10.00 Clear -- 80.6 71.6 74% NA 84.6 29.97 1014.9
09:50 AM CDT 15.0 10.00 Mostly Clear -- 80.6 69.8 70% NA 83.8 29.97 1014.9
09:45 AM CDT S 11.5 10.00 Partly Cloudy -- 80.6 71.6 74% NA 84.6 29.97 1014.9
09:35 AM CDT 16.1 10.00 Partly Cloudy -- 78.8 69.8 74% NA 79.9 29.97 1014.9
09:30 AM CDT S 13.8 10.00 Partly Cloudy -- 78.8 71.6 79% NA 81.7 29.97 1014.9
09:20 AM CDT S 11.5 10.00 Partly Cloudy -- 80.6 71.6 74% NA 84.6 29.96 1014.6

Regional Weather Observation

NEW ORLEANS/INTL (KMSY)

Clear
84.2 F

NEW ORLEANS/LAKE (KNEW)

Clear
86.0 F

NEW ORLEANS NAS (KNBG)

Mostly Cloudy
82.9 F

HAMMOND (KHDC)

Cloudy
82.4 F

GONZALES (KREG)

Clear
86.0 F

SLIDELL 22 (KASD)

Mostly Clear
84.2 F
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