Laplace climate — normals and trends
Laplace (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 20.4 °C and it receives 1,333 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 (11.9 °C). Rainfall peaks in July.
Laplace averages 3 frost days, 81 hot days (≥ 30 °C) and 140 rainy days per year.
Laplace has warmed by +1.1 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.7 °C (on 27 August 2023) and the coldest -10.6 °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
LaplaceLouisiana
- coords
- 30.07°, -90.48°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
20.4°C
Average daily high
24.3°C
Average daily low
17.1°C
Annual rainfall
1,333mm
Sunshine / day
9.7h
Mean relative humidity
77%
Average peak wind
17.5km/h
Seasonal range
15.5°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
81 d/yr
Rainy days (≥ 1 mm)
140 d/yr
Annual snowfall
0.4 cm
Average feels-like high
25.9 °C
Average feels-like low
17.4 °C
Average peak gust
32.0 km/h
Tropical nights (≥ 20 °C)
159 d/yr
Solar radiation
16.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.25 · 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
38.7 °C
27 August 2023
Coldest day
-10.6 °C
23 December 1989
Wettest day
191 mm
29 August 2005
Windiest day
95.3 km/h
10 September 1965
Strongest gust
168.5 km/h
29 August 2005
Hottest feels-like
44.2 °C
30 July 1986
Coldest feels-like
-18.5 °C
23 December 1989
Snowiest day
9.9 cm
21 January 2025
Sunniest day
13.9 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 | -1.6 °C | 83 mm | -32 mm |
| Feb | 19.9 °C | +2.3 °C | 157 mm | +41 mm |
| Mar | 22.9 °C | +2.2 °C | 152 mm | +27 mm |
| Apr | 26.0 °C | +1.7 °C | 88 mm | -16 mm |
| May | 28.2 °C | +0.3 °C | 189 mm | +89 mm |
| Jun | 30.8 °C | +0.4 °C | 106 mm | -0 mm |
| Jul | 31.6 °C | +0.7 °C | 148 mm | +9 mm |
| Aug | 31.0 °C | +0.1 °C | 110 mm | -24 mm |
| Sep | 30.7 °C | +1.6 °C | 37 mm | -82 mm |
| Oct | 26.9 °C | +1.4 °C | 100 mm | +26 mm |
| Nov | 22.7 °C | +2.0 °C | 10 mm | -85 mm |
| Dec | 18.7 °C | +1.3 °C | 55 mm | -52 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 Laplace?
Laplace has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.4 °C and it receives 1,333 mm of precipitation per year.
What is the hottest day ever recorded in Laplace?
The hottest day measured in Laplace between 1940 and 2025 was 27 August 2023, reaching 38.7 °C.
What is the coldest day in Laplace?
The coldest day measured in Laplace between 1940 and 2025 was 23 December 1989, at -10.6 °C.
Does it snow in Laplace?
Almost never: Laplace sees virtually no snow, with about 3 frost days per year.
Has the climate of Laplace warmed?
Yes: Laplace warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Laplace?
The wettest day measured in Laplace between 1940 and 2025 was 29 August 2005, with 191 mm of rain in 24 hours.
What was the windiest day in Laplace?
The windiest day measured in Laplace between 1940 and 2025 was 10 September 1965, with winds reaching 95.3 km/h.
What is the warmest month in Laplace?
The warmest month in Laplace is July (27.4 °C on average); the coldest is January (11.9 °C).
How much does it rain in Laplace?
Laplace receives on average 1,333 mm of precipitation per year, spread over about 140 rainy days.
Is it sunny in Laplace?
Laplace gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
What is the biggest single-day snowfall in Laplace?
The heaviest 24-hour snowfall measured in Laplace between 1940 and 2025 was 21 January 2025, with 9.9 cm.
Are there tropical nights in Laplace?
Yes: Laplace has on average 159 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Laplace?
In Laplace, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 30 July 1986, and the lowest was -18.5 °C on 23 December 1989.
Compare Laplace with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Laplace