Weather Forecast for Lafayette

Louisiana, United States of America

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Partly Cloudy

Current Weather - Lafayette: 36°C

Louisiana, United States of America

Partly Cloudy

Feels like 41°C

Wind

12 km/h WSW

Humidity

43%

Pressure

1015 mb

UV Index

8

Visibility

10 km

Sunny

Sunny

Thursday, August 20, 2026

High

38°C

Low

24°C

Rain Chance

9%

Hourly Forecast

Overcast 29°C
22:00
Partly Cloudy 28°C
23:00
Aug 21

Day Statistics

Maximum Wind

23 km/h

Humidity

70%

Precipitation

0 mm

UV Index

10

Visibility

10 km

Rain Chance

9%

Snow Chance

0%

Sun & Moon

Sunrise

06:38 AM

Sunset

07:44 PM

Moonrise

02:47 PM

Moonset

12:01 AM

Moon Phase

First Quarter

Moon Illumination

58%

Air Quality

PM2.5

9.4

μg/m³

PM10

14.9

μg/m³

NO₂

2.9

μg/m³

O₃

62.8

μg/m³

SO₂

0.9

μg/m³

CO

102.3

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

906.52

Diffuse Radiation

149.91

DNI

0

GTI

0

Weather Alerts

Heat Advisory issued August 20 at 3:27AM CDT until August 20 at 8:00PM CDT by NWS New Orleans LA

Pointe Coupee; West Feliciana; East Feliciana; St. Helena; Washington; Iberville; West Baton Rouge; East Baton Rouge; Assumption; St. James; St. John The Baptist; Upper St. Bernard; Lower St. Bernard; Northern Tangipahoa; 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; Central Plaquemines; Lower Plaquemines; Central Jefferson; Coastal Jefferson; Upper Lafourche; Lower Lafourche; Upper Terrebonne; Lower Terrebonne; Upper St. Charles; Central St. Charles; Lower St. Charles; Wilkinson; Amite; Pike; Walthall; Pearl River; Northern Hancock; Northern Harrison; Northern Jackson; Southern Hancock; Southern Harrison; Southern Jackson Aug 20, 03:27 AM - Aug 20, 05:30 PM
Severity: Moderate Urgency: Expected

* WHAT...Heat index values up to 111 expected * WHERE...All of southeast Louisiana and southern Mississippi. * WHEN...From 11 AM this morning to 8 PM CDT this evening. * 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.

Event: Heat Advisory Certainty: Likely Category: Met

Heat Advisory issued August 20 at 11:13AM CDT until August 20 at 8:00PM CDT by NWS New Orleans LA

Pointe Coupee; West Feliciana; East Feliciana; St. Helena; Washington; Iberville; West Baton Rouge; East Baton Rouge; Assumption; St. James; St. John The Baptist; Upper St. Bernard; Lower St. Bernard; Northern Tangipahoa; 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; Central Plaquemines; Lower Plaquemines; Central Jefferson; Coastal Jefferson; Upper Lafourche; Lower Lafourche; Upper Terrebonne; Lower Terrebonne; Upper St. Charles; Central St. Charles; Lower St. Charles; Wilkinson; Amite; Pike; Walthall; Pearl River; Northern Hancock; Northern Harrison; Northern Jackson; Southern Hancock; Southern Harrison; Southern Jackson Aug 20, 11:13 AM - Aug 21, 01:15 AM
Severity: Moderate Urgency: Expected

* WHAT...For the Heat Advisory, heat index values up to 110. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 113 expected. * WHERE...Portions of southeast Louisiana and southern Mississippi. * WHEN...For the Heat Advisory, until 8 PM CDT this evening. For the Extreme Heat Warning, from 11 AM to 8 PM CDT Friday. * 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. 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.

Event: Heat Advisory Certainty: Likely Category: Met

Extreme Heat Warning issued August 20 at 11:13AM CDT until August 21 at 8:00PM CDT by NWS New Orleans LA

Pointe Coupee; West Feliciana; East Feliciana; St. Helena; Washington; Iberville; West Baton Rouge; East Baton Rouge; Assumption; St. James; St. John The Baptist; Upper St. Bernard; Lower St. Bernard; Northern Tangipahoa; 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; Central Plaquemines; Lower Plaquemines; Central Jefferson; Coastal Jefferson; Upper Lafourche; Lower Lafourche; Upper Terrebonne; Lower Terrebonne; Upper St. Charles; Central St. Charles; Lower St. Charles; Wilkinson; Amite; Pike; Walthall; Pearl River; Northern Hancock; Northern Harrison; Northern Jackson; Southern Hancock; Southern Harrison; Southern Jackson Aug 20, 11:13 AM - Aug 21, 01:15 AM
Severity: Severe Urgency: Expected

* WHAT...For the Heat Advisory, heat index values up to 110. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 113 expected. * WHERE...Portions of southeast Louisiana and southern Mississippi. * WHEN...For the Heat Advisory, until 8 PM CDT this evening. For the Extreme Heat Warning, from 11 AM to 8 PM CDT Friday. * 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. 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.

Event: Extreme Heat Warning Certainty: Likely Category: Met