Carville (2 mi SW), Louisiana climate: Climate normals at a NOAA weather station
Carville (2 mi SW)'s normal year runs from 43°F January nights to 90°F July afternoons, with 62.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 20.4°C, January lows of 6°C, July highs of 32°C, 1,589 mm of precipitation a year.
- NOAA stationCarville (2 mi SW)
- Station IDUSC00161565
- Location30.20°N 91.13°W
- Elevation25 ft (8 m)
On October 23, the normal high in Carville (2 mi SW) is 77°F and the normal low 58°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Carville (2 mi SW).
- Jan 62° 43°
- Feb 66° 47°
- Mar 72° 52°
- Apr 78° 59°
- May 84° 67°
- Jun 89° 73°
- Jul 90° 75°
- Aug 90° 75°
- Sep 87° 71°
- Oct 80° 61°
- Nov 70° 50°
- Dec 64° 45°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Carville (2 mi SW) each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 43°F. The most precipitation falls in June (7.14 in), the least in November (4.06 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 62°F | 43°F | 52.4°F | 5.47 | 9 | <1 | 4 | 10 h 20 min |
| February | 66°F | 47°F | 56.1°F | 4.39 | 9 | <1 | 2 | 11 h 10 min |
| March | 72°F | 52°F | 62.1°F | 4.42 | 8 | <1 | 1 | 12 h |
| April | 78°F | 59°F | 68.2°F | 4.77 | 7 | <1 | <1 | 12 h 50 min |
| May | 84°F | 67°F | 75.5°F | 5.60 | 8 | 4 | <1 | 13 h 40 min |
| June | 89°F | 73°F | 80.7°F | 7.14 | 11 | 15 | <1 | 14 h |
| July | 90°F | 75°F | 82.5°F | 6.28 | 12 | 20 | <1 | 14 h |
| August | 90°F | 75°F | 82.5°F | 5.97 | 11 | 21 | <1 | 13 h 20 min |
| September | 87°F | 71°F | 79.0°F | 4.48 | 9 | 11 | <1 | 12 h 20 min |
| October | 80°F | 61°F | 70.2°F | 4.95 | 7 | 1 | <1 | 11 h 30 min |
| November | 70°F | 50°F | 60.3°F | 4.06 | 7 | <1 | 1 | 10 h 40 min |
| December | 64°F | 45°F | 54.5°F | 5.01 | 9 | <1 | 3 | 10 h 10 min |
| Year (annual) | 78°F | 60°F | 68.7°F | 62.54 | 107 | 72 | 10 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 17°C | 6°C | 11.3°C | 139 mm |
| February | 19°C | 8°C | 13.4°C | 112 mm |
| March | 22°C | 11°C | 16.7°C | 112 mm |
| April | 25°C | 15°C | 20.1°C | 121 mm |
| May | 29°C | 19°C | 24.2°C | 142 mm |
| June | 31°C | 23°C | 27.1°C | 181 mm |
| July | 32°C | 24°C | 28.1°C | 160 mm |
| August | 32°C | 24°C | 28.1°C | 152 mm |
| September | 31°C | 22°C | 26.1°C | 114 mm |
| October | 26°C | 16°C | 21.2°C | 126 mm |
| November | 21°C | 10°C | 15.7°C | 103 mm |
| December | 18°C | 7°C | 12.5°C | 127 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00161565; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Carville (2 mi SW)?
Normal highs sit between 65°F and 85°F in February, March, April, May, October and November. Of those, October has the fewest days with rain (7).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00161565.
When is the last frost at Carville (2 mi SW)?
In Carville (2 mi SW), the last spring frost (32°F) comes after February 9 in half of years and after March 10 in one year in ten; the first autumn frost comes before December 13 in half of years and before November 16 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- February 91 year in 10 after March 10; 9 in 10 after January 12
- First autumn frost, half of years before
- December 131 year in 10 before November 16; 9 in 10 before January 11
NOAA puts the median frost-free season at 308 days, and the season without a hard freeze (28°F) at 341 days.
A hard freeze (28°F) comes after January 27 in half of springs and before January 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Carville (2 mi SW) in zone 9a in ZIP code 70721, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 9b: the coldest night of a typical year reaches 25°F (24 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Louisiana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00161565; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Carville (2 mi SW)?
In a normal year in Carville (2 mi SW), 72 days a year reach 90°F, 10 nights fall to 32°F or colder and 107 days bring measurable precipitation.
- Days at 90°F or more
- 72a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 10a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 107a normal year
The highest temperature in this station's record (since 1939) is 104°F, on August 30, 2000; the lowest is 10°F, on January 11, 1982.
The wettest calendar year on that record is 2021, with 94.17 in; the snowiest season is 1972–73, with 3.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00161565; records: ACIS (NOAA Regional Climate Centers), station USC00161565. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Carville (2 mi SW)?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at Carville (2 mi SW), 4.7 kWh per square metre a day. October is the sunniest month (83%) and February the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.9 |
| February | 68% | 3.4 |
| March | 74% | 4.6 |
| April | 79% | 5.7 |
| May | 81% | 6.2 |
| June | 79% | 6.1 |
| July | 79% | 5.9 |
| August | 80% | 5.6 |
| September | 82% | 5.1 |
| October | 83% | 4.4 |
| November | 80% | 3.4 |
| December | 70% | 2.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Carville (2 mi SW) record?
A normal year at Carville (2 mi SW) brings 1,402 heating degree days, 74% fewer than the median U.S. place (5,373), and 2,767 cooling degree days, 3.0 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 7,025 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 398 | 8 |
| February | 265 | 17 |
| March | 142 | 52 |
| April | 39 | 137 |
| May | 2 | 328 |
| June | 0 | 471 |
| July | 0 | 543 |
| August | 0 | 542 |
| September | 0 | 420 |
| October | 33 | 193 |
| November | 182 | 42 |
| December | 341 | 15 |
| Year (annual) | 1,402 | 2,767 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00161565. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Carville (2 mi SW) been warmer than normal?
2025 averaged 70.5°F, 1.8°F above the 1991-2020 normal of 68.7°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 69.3°F | +0.6°F | 94.17 |
| 2022 | 68.7°F | at normal | 65.52 |
| 2023 | 71.4°F | +2.7°F | 41.50 |
| 2024 | 71.0°F | +2.3°F | 72.42 |
| 2025 | 70.5°F | +1.8°F | 60.61 |
Over 69 complete years from 1940 to 2025, the station's annual mean temperature rose at a fitted 2.6°F per century (+0.15°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00161565; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Carville (2 mi SW)'s climate compare?
Carville (2 mi SW) is warmer than 48 of the 65 places with their own NOAA record in Louisiana, and wetter than 43. Across the 7,247 U.S. stations with normals, its annual mean of 68.7°F is warmer than 94%.
In the Köppen classification computed from these normals, Carville (2 mi SW) is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Carville (2 mi SW) share this climate record?
8 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Prairieville, LA35,010 people · 13 mi NE
- St. Gabriel, LA6,857 people · 4 mi N
- White Castle, LA1,612 people · 3 mi SW
- French Settlement, LA1,152 people · 21 mi NE
- Crescent, LA1,121 people · 10 mi W
- Port Vincent, LA697 people · 19 mi NE
- Bayou Goula, LA342 people · 4 mi W
- Dorseyville, LA180 people · 3 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Carville (2 mi SW)'s climate
What is the coldest month at Carville (2 mi SW)?
January, with a normal high of 62°F and a normal low of 43°F. The warmest is July (90°F by day, 75°F at night).
What is the rainiest month at Carville (2 mi SW)?
June, with 7.14 in of precipitation in a normal year; the driest is November with 4.06 in.
What plant hardiness zone is Carville (2 mi SW) in?
The USDA's 2023 map puts Carville (2 mi SW) in zone 9a in ZIP code 70721, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 25°F (24 years, 1991-2020): zone 9b.
How late can frost come at Carville (2 mi SW)?
In half of years the last 32°F night comes after February 9; in one year in ten it comes after March 10. Waiting until March 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Louisiana climateThe statewide normals and every place in the state
- Donaldsonville, LA11 miles from this station, 68.2°F a year
- Lsu Ben-Hur Farm, LA12 miles from this station, 67.3°F a year
- Brusly, LA16 miles from this station, 67.3°F a year
- Baton Rouge, LA24 miles from this station, 68.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made