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Laplace, Louisiana climate

Cfa Humid subtropical

Laplace has a seasonal warm-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 33°C, while the coldest is January averaging around 6°C at night. Around 1707 mm of precipitation falls each year, peaking in June (219 mm) and easing off in October (105 mm).

☀️ Summers

Hot

Highs near 33°C in July.

About 59 days a year above 32 °C

❄️ Winters

Cool

Lows near 6°C in January.

About 10 freezing nights a year

🌧️ Rain

Very wet

About 1707 mm of rain a year.

Wettest in June

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+0.8 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Laplace climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	17	19	22	26	29	32	33	33	31	27	22	18
Avg temp (°C)	11	14	17	20	24	27	28	28	27	22	16	13
Avg low (°C)	6	8	11	15	19	23	24	24	22	16	10	8
Precipitation (mm)	150	113	124	141	149	219	180	146	146	105	109	126

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	17	19	22	26	29	32
Avg temp (°C)	11	14	17	20	24	27
Avg low (°C)	6	8	11	15	19	23
Precipitation (mm)	150	113	124	141	149	219

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	33	33	31	27	22	18
Avg temp (°C)	28	28	27	22	16	13
Avg low (°C)	24	24	22	16	10	8
Precipitation (mm)	180	146	146	105	109	126

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	7	5	6	4	5	9	9	8	6	4	5	5
Days with high ≥ 32°C (days)	—	—	—	0.2	3	12	17	17	9	0.8	—	—
Days with low ≤ 0°C (days)	4	2	0.8	—	—	—	—	—	—	—	0.7	3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	7	5	6	4	5	9
Days with high ≥ 32°C (days)	—	—	—	0.2	3	12
Days with low ≤ 0°C (days)	4	2	0.8	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	9	8	6	4	5	5
Days with high ≥ 32°C (days)	17	17	9	0.8	—	—
Days with low ≤ 0°C (days)	—	—	—	—	0.7	3

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	61	61	59	54	51	54	57	53	46	42	49	62
Clear days (≤ 30% cloud)	7	7	8	8	9	7	6	7	12	14	10	7
Partly cloudy days (30–70%)	9	8	10	11	13	13	14	15	10	9	10	9
Cloudy days (≥ 70%)	15	14	14	11	9	10	11	9	8	8	10	15
Relative humidity (%)	82	82	81	79	77	77	79	78	79	78	80	83
Wind speed (m/s)	2.9	2.9	2.9	2.9	2.5	2.1	1.9	1.9	2.3	2.5	2.7	2.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	61	61	59	54	51	54
Clear days (≤ 30% cloud)	7	7	8	8	9	7
Partly cloudy days (30–70%)	9	8	10	11	13	13
Cloudy days (≥ 70%)	15	14	14	11	9	10
Relative humidity (%)	82	82	81	79	77	77
Wind speed (m/s)	2.9	2.9	2.9	2.9	2.5	2.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	57	53	46	42	49	62
Clear days (≤ 30% cloud)	6	7	12	14	10	7
Partly cloudy days (30–70%)	14	15	10	9	10	9
Cloudy days (≥ 70%)	11	9	8	8	10	15
Relative humidity (%)	79	78	79	78	80	83
Wind speed (m/s)	1.9	1.9	2.3	2.5	2.7	2.8

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Reserve (NOAA GHCN station USC00167767), about 10 km from the city centre.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →