Climateby Month

Lafayette, LA climate by month

NOAA 1991-2020 normals · 37 ft elevation

Lafayette has hot and oppressively humid summers and cool winters. Highs peak at 92°F in August and fall to 62°F in January. Wet days are spread through the year, from about 8 to 14 a month. Snow is rare. By our comfort score the best months are March, April and November.

Warmest month
92°F
August normal high
Coldest month
44°F
January normal low
Wet days a year
117
62.8 in of precipitation
Muggy days a year
171
dew point 65°F or higher

How warm is Lafayette?

Normal highs range from 62°F in January to 92°F in August.

40°50°60°70°80°90°100° January: normal high 62°F (17°C), low 44°F (7°C) 62° 44° February: normal high 66°F (19°C), low 47°F (8°C) March: normal high 73°F (23°C), low 53°F (12°C) April: normal high 79°F (26°C), low 59°F (15°C) May: normal high 86°F (30°C), low 67°F (19°C) June: normal high 90°F (32°C), low 73°F (23°C) July: normal high 92°F (33°C), low 75°F (24°C) 92° 75° August: normal high 92°F (33°C), low 75°F (24°C) September: normal high 89°F (32°C), low 70°F (21°C) October: normal high 81°F (27°C), low 60°F (16°C) November: normal high 72°F (22°C), low 50°F (10°C) December: normal high 64°F (18°C), low 45°F (7°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Lafayette?

July has the most wet days (about 14); the year brings about 63 in of precipitation.

January: 10 wet days February: 9 wet days March: 9 wet days April: 8 wet days 8 May: 8 wet days June: 12 wet days July: 14 wet days 14 August: 12 wet days September: 9 wet days October: 8 wet days November: 8 wet days December: 10 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How humid is Lafayette?

Muggy days peak in July, at about 31 days.

January: 2 muggy days 2 February: 2 muggy days March: 4 muggy days April: 9 muggy days May: 21 muggy days June: 28 muggy days July: 31 muggy days 31 August: 30 muggy days September: 25 muggy days October: 12 muggy days November: 4 muggy days December: 2 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Lafayette Regional Airport, 2.5 mi SE of the city center.

How much daylight?

Daylight ranges from about 10.2 hours in December to 14.1 hours in June.

January: 10.4 hours of daylight February: 11.1 hours of daylight March: 12.0 hours of daylight April: 12.9 hours of daylight May: 13.7 hours of daylight June: 14.1 hours of daylight 14.1 July: 13.9 hours of daylight August: 13.2 hours of daylight September: 12.3 hours of daylight October: 11.4 hours of daylight November: 10.6 hours of daylight December: 10.2 hours of daylight 10.2 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Lafayette, 1991-2020
MonthHighLowPrecip.Wet daysMuggy daysDaylight
January 62°F44°F 5.9 in10 2 10.4 h
February 66°F47°F 4.1 in9 2 11.1 h
March 73°F53°F 3.7 in9 4 12.0 h
April 79°F59°F 4.9 in8 9 12.9 h
May 86°F67°F 5.4 in8 21 13.7 h
June 90°F73°F 7.1 in12 28 14.1 h
July 92°F75°F 6.3 in14 31 13.9 h
August 92°F75°F 6.3 in12 30 13.2 h
September 89°F70°F 5.0 in9 25 12.3 h
October 81°F60°F 4.8 in8 12 11.4 h
November 72°F50°F 4.4 in8 4 10.6 h
December 64°F45°F 5.0 in10 2 10.2 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Lafayette

By our comfort score, the best months are March, April and November.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 551071
Feb 611160
Mar 671550
Apr 641050
May 51266
Jun 390818
Jul 3501023
Aug 330825
Sep 391616
Oct 56853
Nov 651550
Dec 561070

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Lafayette

The last spring frost typically comes around Feb 13, and the first fall frost around Dec 4, leaving 299 frost-free days in a typical year.

Frost and freeze dates for Lafayette
Typical date1 year in 10
Last spring frost (32°F)Feb 13after Mar 10
First fall frost (32°F)Dec 4before Nov 13
Last hard freeze (28°F)Jan 27after Feb 28
First hard freeze (28°F)Dec 30before Dec 1
Frost-free season299 daysunder 263 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Lafayette Rgnl Airport (USW00013976), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Louisiana.

Hottest and coldest readings, 1991-2020

The highest reading was 104°F (August 30, 2000); the lowest was 16°F (January 17, 2018).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Lafayette

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain, frost dates, humidity and wind by hour and cloud cover: Lafayette Rgnl Airport (USW00013976), 2.3 mi SE of the city center, 38 ft . NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Lafayette (USC00165021), 2.7 mi W of the city center, 25 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Lafayette Regional Airport (722405-13976), 2.5 mi SE of the city center, 35 ft . Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error