Jacques Dupre House · Photo: Jerrye & Roy Klotz, MD · CC BY-SA 4.0Erwinville’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 92°, a January night drops to 41°, and snow is almost unheard of.
A year in Erwinville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Erwinville’s climate
Compared with towns across the U.S., with Erwinville’s place in Louisiana beside it.
What a year in Erwinville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 276 frost-free days a year
In half of years the last 32° night comes by February 25 and the first by November 26. Frost and day counts come from NOAA’s station at Baton Rouge Ryan Airport, 14 miles from the town’s center, at about the same height.
The 2023 USDA map puts Erwinville’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 23°. 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 62 inches of rain a year
January is the wettest month and November the driest. Rain falls on about 114 days a year. Snow is rare: about 0.2" in a normal year at Baton Rouge Ryan Airport, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Erwinville
35% 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 Baton Rouge Ryan Airport.
Living with Erwinville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
276 frost-free days in zone 9a. The last frost comes by Feb 25 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 26.
Months with highs of 62–84° and lows of 40° or more: February, March, April, October, November and December. 1.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Erwinville from natural hazards, hurricanes are the largest share (20%); heat waves, cold waves, winter storms and ice storms together are 21%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Erwinville and similar climates
TownRatings has no climate map of the towns around Erwinville yet.
Climates most like Erwinville’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 |
|---|---|---|---|---|
| Erwinville, LA | 41° | 92° | 62" | 0.2" |
| Vidor, TX | 42° | 92° | 61" | 0.1" |
| Milton, FL | 41° | 91° | 63" | 0.1" |
| Satsuma, AL | 40° | 91° | 64" | 0.2" |
| 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 Erwinville averaged 0.7° warmer than the 1900s. The biggest change is in March (+1.1°).
A smaller shift than in 95% 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 Erwinville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Erwinville’s place among Louisiana’s.
Erwinville weather by month
Highs, lows and precipitation from NOAA’s grid at Erwinville’s center; snow, wet days and snow on the ground from Baton Rouge Ryan Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 62° | 41° | 6.2" | 0.0" | 10 | 0 | 44° – 58° |
| February | 66° | 45° | 4.7" | 0.0" | 9 | 0 | 46° – 64° |
| March | 73° | 50° | 4.5" | 0.0" | 9 | 0 | 56° – 69° |
| April | 79° | 57° | 5.1" | 0.0" | 8 | 0 | 63° – 72° |
| May | 86° | 64° | 5.5" | 0.0" | 8 | 0 | 72° – 79° |
| June | 90° | 71° | 6.1" | 0.0" | 12 | 0 | 78° – 84° |
| July | 92° | 73° | 5.5" | 0.0" | 13 | 0 | 81° – 85° |
| August | 92° | 73° | 5.6" | 0.0" | 12 | 0 | 79° – 86° |
| September | 88° | 68° | 4.4" | 0.0" | 9 | 0 | 75° – 83° |
| October | 81° | 57° | 4.6" | 0.0" | 7 | 0 | 65° – 74° |
| November | 71° | 48° | 4.2" | 0.0" | 8 | 0 | 54° – 64° |
| December | 64° | 43° | 5.3" | 0.2" | 10 | 0 | 46° – 61° |
| Year | 79° | 57° | 61.7" | 0.2" | 114 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 46° to 64°. July is the most reliable, staying within 4°.
Where Erwinville’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 Erwinville’s center.
- Snow: Baton Rouge Ryan Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Baton Rouge Ryan Airport, 14 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 Erwinville’s climate
What is the weather like in Erwinville?
A typical July afternoon reaches 92°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 90% of U.S. towns; hotter July afternoons than 87% of U.S. towns.
How cold does it get in Erwinville in winter?
January nights average 41°. About 18 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 44°.
How much snow does Erwinville get?
About 0.2 inches in a normal winter at Baton Rouge Ryan Airport, so most winters see none.
How hot does it get in Erwinville?
July, with a typical high of 92° and a low of 73°. About 96 days a year reach 90° and 1 reach 100° (Baton Rouge Ryan Airport).
When is the first and last frost in Erwinville?
In half of years the last spring frost (32°) comes by February 25 and the first fall frost by November 26, about 276 frost-free days, at Baton Rouge Ryan Airport.
What growing zone is Erwinville in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 23°.
What is the best time of year to visit Erwinville?
By one simple rule (highs of 62–84° and lows of 40° or more), February, March, April, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Erwinville getting warmer?
Yes: 1991–2020 averaged 0.7° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 95% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Erwinville.
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.