Saint John the Baptist Parish, LA Weather Forecast
County weather hub
Showers And Thunderstorms
Compare major city weather across Saint John the Baptist Parish, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms. Mostly cloudy. High near 97, with temperatures falling to around 82 in the afternoon. Heat index values as high as 105. North wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Saint John the Baptist Parish so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in Saint John the Baptist Parish.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 24 to Aug 30, 2026
- Latest sync
- Aug 24, 2026 4:52 PM CDT
- Forecast office
- LIX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint John the Baptist Parish
This Afternoon looks like the warmest upcoming period in Saint John the Baptist Parish at 97 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 76 degrees F.
The strongest winds are forecast for This Afternoon at about 5 mph N.
Precipitation is mentioned in 14 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 24, 2026 4:52 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LIX
- Radar station
- KLIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 77. Southwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts between a half and three quarters of an inch possible.
A chance of showers and thunderstorms after 8am. Mostly sunny. High near 95, with temperatures falling to around 90 in the afternoon. Heat index values as high as 106. Northwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 76. Southwest wind 0 to 5 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 97. West wind 0 to 5 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. Southwest wind around 5 mph. Chance of precipitation is 40%.
Showers and thunderstorms likely. Mostly sunny, with a high near 93. Southwest wind around 5 mph. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 78. Southwest wind 0 to 5 mph.
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Southwest wind around 0 mph.
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 78. Southwest wind around 0 mph.
A chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 91. East wind 0 to 5 mph.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 78. Southeast wind 0 to 5 mph.
A chance of showers and thunderstorms after 7am. Sunny, with a high near 91. Southeast wind 0 to 5 mph.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 78. South wind 0 to 5 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Aug 24
|
Showers And Thunderstorms
|
97°F |
5 mph
N
|
|
Tonight
Aug 24
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
77°F |
0 to 5 mph
SW
|
|
Tuesday
Aug 25
|
Chance Showers And Thunderstorms
|
95°F |
5 mph
NW
|
|
Tuesday Night
Aug 25
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
76°F |
0 to 5 mph
SW
|
|
Wednesday
Aug 26
|
Sunny then Chance Showers And Thunderstorms
|
97°F |
0 to 5 mph
W
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms
|
77°F |
5 mph
SW
|
|
Thursday
Aug 27
|
Showers And Thunderstorms Likely
|
93°F |
5 mph
SW
|
|
Thursday Night
Aug 27
|
Showers And Thunderstorms Likely
|
78°F |
0 to 5 mph
SW
|
|
Friday
Aug 28
|
Chance Showers And Thunderstorms
|
89°F |
0 mph
|
|
Friday Night
Aug 28
|
Chance Showers And Thunderstorms
|
78°F |
0 mph
|
|
Saturday
Aug 29
|
Chance Showers And Thunderstorms
|
91°F |
0 to 5 mph
E
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms then Partly Cloudy
|
78°F |
0 to 5 mph
SE
|
|
Sunday
Aug 30
|
Chance Showers And Thunderstorms
|
91°F |
0 to 5 mph
SE
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms then Partly Cloudy
|
78°F |
0 to 5 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Saint John the Baptist Parish.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Saint John the Baptist Parish.
Largest mapped city population in this region: 29,872.
