Frost dates for Carville 2 SW, Louisiana
Half of years have their last spring frost by February 9, but 1 year in 10 still frosts after March 10.
A frost date is really a percentile from 30 years of records at a nearby weather station: in about half of years a frost still comes after the median date. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
How often a frost still comes on or after each date.
- 1 year in 10
- March 10
- 1 year in 5
- March 1
- 3 years in 10
- February 23
- 2 years in 5
- February 15
- Half of years (the median)
- February 9
First fall freeze
How often the first freeze comes on or before each date.
- 1 year in 10
- November 16
- 1 year in 5
- November 26
- 3 years in 10
- December 1
- 2 years in 5
- December 6
- Half of years (the median)
- December 13
- Growing season
- about 308 days
- Hardiness zone nearby
- 9a
- Summer days
- a usual high of about 32 °C90 °F
- Lettuce and spinach run to seed
- April to September, in hot, long days (how we know)
Summer and rain
A growing garden needs about 25 mm1 in of water a week, rain and watering together. Here is what a normal month brings.
- Hot-weather watering
- August: days run above 32 °C90 °F and nights stay above 21 °C70 °F, so expect to water daily or every other day (how we know)
Month by month
- January
- high ~16 °C62 °F · low ~6 °C43 °F · rain ~139 mm5.5 in
- February
- high ~19 °C66 °F · low ~8 °C47 °F · rain ~112 mm4.4 in
- March
- high ~22 °C72 °F · low ~11 °C52 °F · rain ~112 mm4.4 in
- April
- high ~25 °C78 °F · low ~15 °C59 °F · rain ~121 mm4.8 in
- May
- high ~29 °C84 °F · low ~19 °C67 °F · rain ~142 mm5.6 in
- June
- high ~31 °C89 °F · low ~23 °C73 °F · rain ~181 mm7.1 in
- July
- high ~32 °C90 °F · low ~24 °C75 °F · rain ~160 mm6.3 in
- August
- high ~32 °C90 °F · low ~24 °C75 °F · rain ~152 mm6 in
- September
- high ~31 °C87 °F · low ~22 °C71 °F · rain ~114 mm4.5 in
- October
- high ~26 °C80 °F · low ~16 °C61 °F · rain ~126 mm4.9 in
- November
- high ~21 °C70 °F · low ~10 °C50 °F · rain ~103 mm4.1 in
- December
- high ~18 °C64 °F · low ~7 °C45 °F · rain ~127 mm5 in
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the Carville 2 SW station (listed by NOAA as Carville 2 SW, USC00161565), at 30.20, -91.13. These are that station’s own records, unshifted. The further your garden is from it, the less exactly they describe your ground. The planner finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.
ZIP codes nearest this station
70721, 70733, 70734, 70764, 70769, 70776, 70788.
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- New Roads 5 NE, LA, last frost by February 19
- New Orleans Lakefront Airport, LA, last frost by January 22
Other stations in Louisiana.
- Shreveport Sthrn Hills, LA, last frost by March 12
When do I plant? · Where the dates come from
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