National Weather ServiceLouisianaExtreme Heat WarningArchive to October 1, 2026
Extreme Heat Warnings in Louisiana
The National Weather Service issued 12 extreme heat warnings for Louisiana in 2025 and 11 a year on average in 2008-2025; in 2021-2025 it had the 4th most of any state. 2026 through September: 19, 66% above the average of 11 for those months in 2008-2025. Upper Jefferson was covered most often (62 times since 2008).
How many extreme heat warnings does Louisiana get?
Every extreme heat warning that covered part of Louisiana. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 19 |
| 2025 | 12 |
| 2024 | 34 |
| 2023 | 95 |
| 2022 | 8 |
| 2021 | 10 |
| 2020 | 7 |
| 2019 | 3 |
| 2018 | 2 |
| 2017 | 0 |
| 2016 | 2 |
| 2015 | 12 |
| 2014 | 0 |
| 2013 | 0 |
| 2012 | 2 |
| 2011 | 6 |
| 2010 | 10 |
| 2009 | 1 |
| 2008 | 2 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Louisiana get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Louisiana?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Upper Jefferson | 62 | 49 | August 21, 2026 |
| St. John The Baptist | 62 | 49 | August 21, 2026 |
| St. James | 60 | 48 | August 21, 2026 |
| Upper St. Bernard | 59 | 46 | August 21, 2026 |
| Upper Plaquemines | 59 | 46 | August 21, 2026 |
| St. Charles | 54 | 41 | July 29, 2025 |
| East Baton Rouge | 54 | 42 | August 21, 2026 |
| Western Orleans | 53 | 49 | August 21, 2026 |
| Southeast St. Tammany | 53 | 49 | August 21, 2026 |
| Eastern Orleans | 53 | 49 | August 21, 2026 |
| East Carroll | 53 | 33 | August 21, 2026 |
| West Feliciana | 52 | 41 | August 21, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
The latest extreme heat warnings for Louisiana in AreaZine's record
NWS JacksonWarningAugust 21, 2026
Extreme Heat Warning: Morehouse, West Carroll, East Carroll and 23 more, LA and MS
Expired 8:00 p.m. CDT, August 21, 2026
NWS ShreveportWarningAugust 21, 2026
Extreme Heat Warning: Columbia, Union, Caddo and 30 more, AR and LA
Expired 9:00 p.m. CDT, August 21, 2026
NWS Lake CharlesWarningAugust 20, 2026
Extreme Heat Warning: Beauregard, Allen, Lafayette and 18 more, LA and TX
Expired 8:00 p.m. CDT, August 21, 2026
NWS New OrleansWarningAugust 20, 2026
Extreme Heat Warning: Pointe Coupee, West Feliciana, East Feliciana and 46 more, LA and MS
Expired 8:00 p.m. CDT, August 21, 2026
NWS JacksonWarningAugust 19, 2026
Extreme Heat Warning: Chicot, West Carroll, East Carroll and 20 more, AR and LA
Expired 9:00 p.m. CDT, August 19, 2026
NWS New OrleansWarningAugust 17, 2026
Extreme Heat Warning: St. James, St. John The Baptist, Upper St. Bernard and 23 more, LA and MS
Expired 8:00 p.m. CDT, August 18, 2026
NWS New OrleansWarningAugust 17, 2026
Extreme Heat Warning: Pointe Coupee, West Feliciana, East Feliciana and 46 more, LA and MS
Expired 8:00 p.m. CDT, August 17, 2026
NWS JacksonWarningAugust 16, 2026
Extreme Heat Warning: Chicot, West Carroll, East Carroll and 27 more, AR and LA
Expired 8:00 p.m. CDT, August 17, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is an extreme heat warning?
An extreme heat warning means dangerous heat is expected, measured by heat index or temperature thresholds each office sets. It replaced the excessive heat warning in 2025. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. AreaZine's counts include the excessive heat warnings issued before the change. The national record · Every warning type in Louisiana.