Lafayette climate — normals and trends
Lafayette (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.9 °C and it receives 1,250 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (27.4 °C on average) and the coldest is January (10.8 °C). Rainfall peaks in January.
Lafayette averages 11 frost days, 113 hot days (≥ 30 °C) and 133 rainy days per year.
Lafayette has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.7 °C (on 27 August 2023) and the coldest -12.4 °C (on 23 December 1989).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
LafayetteLouisiana
- coords
- 30.22°, -92.02°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.9°C
Average daily high
25.1°C
Average daily low
15.2°C
Annual rainfall
1,250mm
Sunshine / day
9.6h
Mean relative humidity
75%
Average peak wind
16.7km/h
Seasonal range
16.6°C
Frost days (< 0 °C)
11 d/yr
Hot days (≥ 30 °C)
113 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
0.7 cm
Average feels-like high
26.4 °C
Average feels-like low
15.4 °C
Average peak gust
33.7 km/h
Tropical nights (≥ 20 °C)
139 d/yr
Solar radiation
16.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.33 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
41.7 °C
27 August 2023
Coldest day
-12.4 °C
23 December 1989
Wettest day
201 mm
16 November 1987
Windiest day
72.9 km/h
27 June 1957
Strongest gust
142.2 km/h
27 June 1957
Hottest feels-like
46.6 °C
24 August 2023
Coldest feels-like
-19.7 °C
23 December 1989
Snowiest day
12.0 cm
11 December 2008
Sunniest day
13.8 h
21 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 14.4 °C | -1.7 °C | 122 mm | +1 mm |
| Feb | 20.3 °C | +2.3 °C | 109 mm | +1 mm |
| Mar | 24.4 °C | +2.9 °C | 121 mm | +9 mm |
| Apr | 27.1 °C | +1.9 °C | 65 mm | -39 mm |
| May | 29.1 °C | +0.3 °C | 155 mm | +52 mm |
| Jun | 31.9 °C | +0.4 °C | 116 mm | +19 mm |
| Jul | 33.2 °C | +1.2 °C | 115 mm | -4 mm |
| Aug | 34.2 °C | +1.9 °C | 75 mm | -35 mm |
| Sep | 33.7 °C | +3.2 °C | 36 mm | -58 mm |
| Oct | 29.4 °C | +2.7 °C | 85 mm | +6 mm |
| Nov | 24.1 °C | +2.9 °C | 18 mm | -77 mm |
| Dec | 19.2 °C | +1.6 °C | 93 mm | -17 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Lafayette?
Lafayette has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.9 °C and it receives 1,250 mm of precipitation per year.
What is the hottest day ever recorded in Lafayette?
The hottest day measured in Lafayette between 1940 and 2025 was 27 August 2023, reaching 41.7 °C.
What is the coldest day in Lafayette?
The coldest day measured in Lafayette between 1940 and 2025 was 23 December 1989, at -12.4 °C.
Does it snow in Lafayette?
Almost never: Lafayette sees virtually no snow, with about 11 frost days per year.
Has the climate of Lafayette warmed?
Yes: Lafayette warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Lafayette?
The wettest day measured in Lafayette between 1940 and 2025 was 16 November 1987, with 201 mm of rain in 24 hours.
What was the windiest day in Lafayette?
The windiest day measured in Lafayette between 1940 and 2025 was 27 June 1957, with winds reaching 72.9 km/h.
What is the warmest month in Lafayette?
The warmest month in Lafayette is July (27.4 °C on average); the coldest is January (10.8 °C).
How much does it rain in Lafayette?
Lafayette receives on average 1,250 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Lafayette?
Lafayette gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Lafayette?
The heaviest 24-hour snowfall measured in Lafayette between 1940 and 2025 was 11 December 2008, with 12.0 cm.
Are there tropical nights in Lafayette?
Yes: Lafayette has on average 139 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Lafayette?
In Lafayette, between 1940 and 2025, the highest apparent temperature reached 46.6 °C on 24 August 2023, and the lowest was -19.7 °C on 23 December 1989.
Compare Lafayette with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Lafayette