Photo: Ken Lund from Las Vegas, Nevada, USA · CC BY-SA 2.0Few U.S. towns get more rain and snow than St. Martinville: 63 inches a year
July afternoons average 91°. Winters are mild: January nights here are milder than in 91% of U.S. towns. The latest 30-year average runs 0.8° warmer than 1901–2000’s, with February up the most. The outdoor season runs from October to April, with highs of 62–81°.
A year in St. Martinville at a glance
Each month’s typical high and low, and what it brings.
What stands out about St. Martinville’s climate
Compared with towns across the U.S., with St. Martinville’s place in Louisiana beside it.
What a year in St. Martinville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 280 frost-free days a year
In half of years the last 32° night comes by February 21 and the first by November 27. Day counts come from NOAA’s station at Lafayette 13 Se, LA, 4 miles from the town’s center, at about the same height; frost dates and degree days from St Martinville 3 Sw, LA, 4 miles away.
The 2023 USDA map puts St. Martinville’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 25°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 63 inches of rain a year
June is the wettest month and March the driest. Rain falls on about 99 days a year. Snow is rare: about 0.0" in a normal year at St Martinville 3 Sw, LA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in St. Martinville
37% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55°: December and January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at St Martinville 3 Sw, LA.
Living with St. Martinville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
280 frost-free days in zone 9a. The last frost comes by Feb 21 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 27.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, October, November and December. 1.6 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in St. Martinville from natural hazards, hurricanes are the largest share (42%); heat waves, cold waves, winter storms and ice storms together are 14%. Normals are averages; the hazards page covers the extremes.
Natural hazards →St. Martinville and similar climates
TownRatings has no climate map of the towns around St. Martinville yet.
Climates most like St. Martinville’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| St. Martinville, LA | 42° | 91° | 63" | 0.0" |
| Brent, FL | 42° | 91° | 63" | 0.0" |
| Foley, AL | 42° | 91° | 63" | 0.1" |
| Moss Point, MS | 41° | 90° | 66" | 0.1" |
| Magalia, CA | 38° | 92° | 61" | 0.1" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in St. Martinville averaged 0.8° warmer than the 1900s. The biggest change is in February (+1.4°).
A smaller shift than in 92% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How St. Martinville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with St. Martinville’s place among Louisiana’s.
St. Martinville weather by month
Highs, lows and precipitation from NOAA’s grid at St. Martinville’s center; snow, wet days and snow on the ground from St Martinville 3 Sw, LA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 62° | 42° | 5.8" | 0.0" | 9 | 0 | 45° – 60° |
| February | 66° | 46° | 4.3" | 0.0" | 7 | 0 | 47° – 65° |
| March | 73° | 52° | 3.8" | 0.0" | 7 | 0 | 56° – 69° |
| April | 79° | 58° | 5.0" | 0.0" | 6 | 0 | 63° – 72° |
| May | 85° | 66° | 5.2" | 0.0" | 7 | 0 | 72° – 79° |
| June | 90° | 72° | 6.8" | 0.0" | 11 | 0 | 79° – 84° |
| July | 91° | 74° | 6.3" | 0.0" | 12 | 0 | 81° – 84° |
| August | 92° | 73° | 6.5" | 0.0" | 10 | 0 | 79° – 86° |
| September | 88° | 69° | 5.2" | 0.0" | 8 | 0 | 76° – 82° |
| October | 81° | 59° | 4.6" | 0.0" | 6 | 0 | 66° – 75° |
| November | 71° | 49° | 4.5" | 0.0" | 7 | 0 | 55° – 65° |
| December | 65° | 44° | 4.7" | 0.0" | 8 | 0 | 47° – 62° |
| Year | 79° | 59° | 62.6" | 0.0" | 99 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 47° to 65°. July is the most reliable, staying within 4°.
Where St. Martinville’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at St. Martinville’s center.
- Snow: St Martinville 3 Sw, LA.
- Frost dates, heating and cooling: St Martinville 3 Sw, LA, 4 miles away.
- Freezing nights, 90° and 100° days: Lafayette 13 Se, LA, 4 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about St. Martinville’s climate
What is the weather like in St. Martinville?
A typical July afternoon reaches 91°, a January night drops to 42°, and snow is almost unheard of. Milder January nights than 91% of U.S. towns; hotter July afternoons than 83% of U.S. towns.
How cold does it get in St. Martinville in winter?
January nights average 42°. About 14 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 45°.
How much snow does St. Martinville get?
About 0.0 inches in a normal winter at St Martinville 3 Sw, LA, so most winters see none.
How hot does it get in St. Martinville?
July, with a typical high of 91° and a low of 74°. About 66 days a year reach 90° (St Martinville 3 Sw, LA).
When is the first and last frost in St. Martinville?
In half of years the last spring frost (32°) comes by February 21 and the first fall frost by November 27, about 280 frost-free days, at St Martinville 3 Sw, LA.
What growing zone is St. Martinville in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 25°.
What is the best time of year to visit St. Martinville?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is St. Martinville getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 92% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in St. Martinville.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.