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Harvey, LA Weather

Live radar, hourly and 7-day forecast, and National Weather Service alerts for Harvey, Jefferson Parish, Louisiana.

Updated Jul 29, 2026, 2:27 PM local time · Radar refreshes every 5 minutes

🌤️
Harvey
Mostly clear
94°F
Feels like 106°F
Wind 5 mph
Humidity 54%
Cloud cover 37%
UV index 9
Alerts 6

Active alerts (6)

Extreme Heat WarningSevere
St. James; St. John The Baptist; Upper St. Bernard; Lower St. Bernard; Southeast St. Tammany; Western Orleans; Eastern Orleans; Northern St. Tammany; Southwestern St. Tammany; Central Tangipahoa; Lower Tangipahoa; Northern Livingston; Southern Livingston; Western Ascension; Eastern Ascension; Upper Jefferson; Upper Plaquemines; Upper St. Charles; Central St. Charles; Lower St. Charles; Southern Hancock; Southern Harrison; Southern Jackson
Until Jul 30, 2026, 1:45 AM
Full details
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with heat index values up to 113 to 115. For the Heat Advisory,
heat index values up to 110 expected.

* WHERE...Portions of southeast Louisiana and southern Mississippi.

* WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening.
For the Heat Advisory, from 11 AM to 7 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Heat AdvisoryModerate
Ashley; Chicot; Morehouse; West Carroll; East Carroll; Richland; Madison; Franklin; Catahoula; Tensas; Concordia; Leake; Scott; Newton; Smith; Jasper; Clarke; Adams; Franklin; Lincoln; Lawrence; Jefferson Davis; Covington; Jones; Marion; Lamar; Forrest
Until Jul 30, 2026, 2:00 AM
Full details
* WHAT...For both heat advisories, heat index values up to 110
expected.

* WHERE...Portions of southeast Arkansas, northeast Louisiana, and
central, east central, south central, southeast, and southwest
Mississippi.

* WHEN...For the first Heat Advisory, until 9 PM CDT this evening.
For the second Heat Advisory, from 10 AM to 7 PM CDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat related
illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
Heat AdvisoryModerate
Ashley; Chicot; Morehouse; West Carroll; East Carroll; Richland; Madison; Franklin; Catahoula; Tensas; Concordia; Leake; Scott; Newton; Smith; Jasper; Clarke; Adams; Franklin; Lincoln; Lawrence; Jefferson Davis; Covington; Jones; Marion; Lamar; Forrest
Until Jul 30, 2026, 2:00 AM
Full details
* WHAT...For both heat advisories, heat index values up to 110
expected.

* WHERE...Portions of southeast Arkansas, northeast Louisiana, and
central, east central, south central, southeast, and southwest
Mississippi.

* WHEN...For the first Heat Advisory, until 9 PM CDT this evening.
For the second Heat Advisory, from 10 AM to 7 PM CDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat related
illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
Heat AdvisoryModerate
Pointe Coupee; West Feliciana; East Feliciana; St. Helena; Washington; Iberville; West Baton Rouge; East Baton Rouge; Assumption; Northern Tangipahoa; Central Plaquemines; Lower Plaquemines; Central Jefferson; Coastal Jefferson; Upper Lafourche; Lower Lafourche; Upper Terrebonne; Lower Terrebonne; Wilkinson; Amite; Pike; Walthall; Pearl River; Northern Hancock; Northern Harrison; Northern Jackson
Until Jul 30, 2026, 1:45 AM
Full details
* WHAT...For the first Heat Advisory, heat index values up to 110.
For the second Heat Advisory, heat index values up to 110 expected.

* WHERE...Portions of southeast Louisiana and southern Mississippi.

* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from 11 AM to 7 PM CDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Heat AdvisoryModerate
St. James; St. John The Baptist; Upper St. Bernard; Lower St. Bernard; Southeast St. Tammany; Western Orleans; Eastern Orleans; Northern St. Tammany; Southwestern St. Tammany; Central Tangipahoa; Lower Tangipahoa; Northern Livingston; Southern Livingston; Western Ascension; Eastern Ascension; Upper Jefferson; Upper Plaquemines; Upper St. Charles; Central St. Charles; Lower St. Charles; Southern Hancock; Southern Harrison; Southern Jackson
Until Jul 30, 2026, 1:45 AM
Full details
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with heat index values up to 113 to 115. For the Heat Advisory,
heat index values up to 110 expected.

* WHERE...Portions of southeast Louisiana and southern Mississippi.

* WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening.
For the Heat Advisory, from 11 AM to 7 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Heat AdvisoryModerate
Pointe Coupee; West Feliciana; East Feliciana; St. Helena; Washington; Iberville; West Baton Rouge; East Baton Rouge; Assumption; Northern Tangipahoa; Central Plaquemines; Lower Plaquemines; Central Jefferson; Coastal Jefferson; Upper Lafourche; Lower Lafourche; Upper Terrebonne; Lower Terrebonne; Wilkinson; Amite; Pike; Walthall; Pearl River; Northern Hancock; Northern Harrison; Northern Jackson
Until Jul 30, 2026, 1:45 AM
Full details
* WHAT...For the first Heat Advisory, heat index values up to 110.
For the second Heat Advisory, heat index values up to 110 expected.

* WHERE...Portions of southeast Louisiana and southern Mississippi.

* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
For the second Heat Advisory, from 11 AM to 7 PM CDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Harvey weather radar

Light Heavy

Next 24 hours

Now
🌤️
94°F
3%
3 PM
☀️
95°F
4%
4 PM
☁️
96°F
2%
5 PM
☁️
96°F
4%
6 PM
🌤️
96°F
4%
7 PM
☁️
94°F
5%
8 PM
☁️
89°F
3%
9 PM
☁️
87°F
2%
10 PM
☁️
85°F
1%
11 PM
☁️
83°F
1%
12 AM
☁️
82°F
1%
1 AM
☁️
81°F
1%
2 AM
☁️
80°F
1%
3 AM
☁️
80°F
1%
4 AM
☁️
79°F
1%
5 AM
☁️
79°F
1%
6 AM
☁️
79°F
1%
7 AM
☁️
79°F
2%
8 AM
82°F
2%
9 AM
☀️
84°F
2%
10 AM
☀️
87°F
3%
11 AM
☀️
90°F
4%
12 PM
☀️
93°F
5%
1 PM
☀️
95°F
8%

7-day forecast

Today
Jul 29
☁️
96°F
79°F
5%
Thu
Jul 30
☁️
98°F
79°F
21%
Fri
Jul 31
☁️
98°F
80°F
51%
Sat
Aug 1
☁️
99°F
79°F
36%
Sun
Aug 2
⛈️
88°F
76°F
64%
Mon
Aug 3
☁️
94°F
79°F
37%
Tue
Aug 4
☁️
95°F
80°F
37%

Weather near Harvey

1 mi Marrero, LA2 mi Gretna, LA3 mi Terrytown, LA4 mi New Orleans, LA4 mi Estelle, LA7 mi Metairie, LA7 mi Chalmette, LA12 mi Kenner, LA
Alerts are relayed from the National Weather Service and may lag the official source. In a life-threatening situation always follow weather.gov and local emergency broadcasts.