Live Oaks Plantation · Photo: Z28scrambler · CC BY-SA 3.0Rosedale is among the wettest of U.S. towns: 62 inches of precipitation a year
January mornings start at about 41°. Precipitation peaks in June and eases off in November. Winters are mild: January nights here are milder than in 90% of U.S. towns. Seedlings are safe outdoors from about February 28, with the first autumn frost due around November 24.
A year in Rosedale at a glance
Each month’s typical high and low, and what it brings.
What stands out about Rosedale’s climate
Compared with towns across the U.S., with Rosedale’s place in Louisiana beside it.
What a year in Rosedale feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 268 frost-free days a year
In half of years the last 32° night comes by February 28 and the first by November 24. Frost and day counts come from NOAA’s station at Brusly 2 W, LA, 12 miles from the town’s center, at about the same height.
The 2023 USDA map puts Rosedale’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
June 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 Rosedale
40% 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 Brusly 2 W, LA.
Living with Rosedale’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
268 frost-free days in zone 9a. The last frost comes by Feb 28 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 24.
Months with highs of 62–84° and lows of 40° or more: February, March, April, October, November and December. 1.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Rosedale from natural hazards, hurricanes are the largest share (50%); heat waves, cold waves, winter storms and ice storms together are 12%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Rosedale and similar climates
TownRatings has no climate map of the towns around Rosedale yet.
Climates most like Rosedale’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 |
|---|---|---|---|---|
| Rosedale, 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 Rosedale averaged 0.7° warmer than the 1900s. The biggest change is in February (+1.2°).
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 Rosedale compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Rosedale’s place among Louisiana’s.
Rosedale weather by month
Highs, lows and precipitation from NOAA’s grid at Rosedale’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° | 51° | 4.4" | 0.0" | 9 | 0 | 56° – 69° |
| April | 79° | 57° | 4.9" | 0.0" | 8 | 0 | 63° – 72° |
| May | 86° | 65° | 5.7" | 0.0" | 8 | 0 | 72° – 79° |
| June | 90° | 71° | 6.3" | 0.0" | 12 | 0 | 79° – 84° |
| July | 92° | 73° | 5.6" | 0.0" | 13 | 0 | 81° – 85° |
| August | 92° | 73° | 5.6" | 0.0" | 12 | 0 | 79° – 86° |
| September | 88° | 68° | 4.5" | 0.0" | 9 | 0 | 76° – 82° |
| October | 81° | 58° | 4.4" | 0.0" | 7 | 0 | 65° – 75° |
| November | 71° | 48° | 4.3" | 0.0" | 8 | 0 | 54° – 64° |
| December | 64° | 43° | 5.3" | 0.2" | 10 | 0 | 46° – 61° |
| Year | 79° | 58° | 61.9" | 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 Rosedale’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 Rosedale’s center.
- Snow: Baton Rouge Ryan Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Brusly 2 W, LA, 12 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 Rosedale’s climate
What is the weather like in Rosedale?
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 86% of U.S. towns.
How cold does it get in Rosedale in winter?
January nights average 41°. About 26 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 44°.
How much snow does Rosedale 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 Rosedale?
July, with a typical high of 92° and a low of 73°. About 85 days a year reach 90° (Brusly 2 W, LA).
When is the first and last frost in Rosedale?
In half of years the last spring frost (32°) comes by February 28 and the first fall frost by November 24, about 268 frost-free days, at Brusly 2 W, LA.
What growing zone is Rosedale 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 Rosedale?
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 Rosedale 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 Rosedale.
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.