Photo: No machine-readable author provided. Blinutne assumed (based on copyright claims). · CC BY-SA 3.0Pearl River sits near the top of U.S. towns for precipitation, with 64 inches a year
Midwinter brings lows of about 41°. Its January nights stay gentler than in 90% of U.S. towns. The latest 30-year average runs 0.9° warmer than 1901–2000’s, with February up the most. Comfortable outdoor weather lasts from February to April and October to December, with highs of 64–80°.
A year in Pearl River at a glance
Each month’s typical high and low, and what it brings.
What stands out about Pearl River’s climate
Compared with towns across the U.S., with Pearl River’s place in Louisiana beside it.
What a year in Pearl River feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 263 frost-free days a year
In half of years the last 32° night comes by March 3 and the first by November 21. Frost and day counts come from NOAA’s station at Slidell Airport, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Pearl River’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 22°. 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 64 inches of rain a year
July is the wettest month and October the driest. Rain falls on about 117 days a year. Snow is rare: about 0.1" in a normal year at Slidell, LA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Pearl River
38% 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 Slidell Airport.
Living with Pearl River’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
263 frost-free days in zone 9a. The last frost comes by Mar 3 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 21.
Months with highs of 62–84° and lows of 40° or more: February, March, April, October, November and December. 0.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Pearl River from natural hazards, hurricanes are the largest share (59%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Pearl River and similar climates
TownRatings has no climate map of the towns around Pearl River yet.
Climates most like Pearl River’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 |
|---|---|---|---|---|
| Pearl River, LA | 41° | 91° | 64" | 0.1" |
| Milton, FL | 41° | 91° | 63" | 0.1" |
| Orange, TX | 42° | 91° | 62" | 0.0" |
| Brewton, AL | 38° | 92° | 63" | 0.0" |
| 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 Pearl River averaged 0.9° warmer than the 1900s. The biggest change is in February (+1.4°).
A smaller shift than in 84% 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 Pearl River compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Pearl River’s place among Louisiana’s.
Pearl River weather by month
Highs, lows and precipitation from NOAA’s grid at Pearl River’s center; snow, wet days and snow on the ground from Slidell, LA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 62° | 41° | 5.8" | 0.0" | 11 | 0 | 44° – 58° |
| February | 66° | 45° | 4.7" | 0.0" | 9 | 0 | 46° – 65° |
| March | 72° | 50° | 5.1" | 0.1" | 9 | 0 | 55° – 70° |
| April | 78° | 56° | 5.5" | 0.0" | 8 | 0 | 62° – 72° |
| May | 85° | 64° | 5.1" | 0.0" | 8 | 0 | 71° – 78° |
| June | 90° | 71° | 6.6" | 0.0" | 11 | 0 | 78° – 83° |
| July | 91° | 73° | 7.1" | 0.0" | 14 | 0 | 80° – 84° |
| August | 91° | 73° | 6.6" | 0.0" | 14 | 0 | 79° – 85° |
| September | 88° | 69° | 5.1" | 0.0" | 10 | 0 | 76° – 82° |
| October | 80° | 58° | 3.9" | 0.0" | 7 | 0 | 65° – 74° |
| November | 71° | 47° | 4.1" | 0.0" | 8 | 0 | 54° – 64° |
| December | 64° | 43° | 4.9" | 0.0" | 10 | 0 | 46° – 61° |
| Year | 78° | 57° | 64.4" | 0.1" | 117 | 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 65°. July is the most reliable, staying within 5°.
Where Pearl River’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 Pearl River’s center.
- Snow: Slidell, LA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Slidell Airport, 5 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 Pearl River’s climate
What is the weather like in Pearl River?
A typical July afternoon reaches 91°, 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 83% of U.S. towns.
How cold does it get in Pearl River in winter?
January nights average 41°. About 24 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 44°.
How much snow does Pearl River get?
About 0.1 inches in a normal winter at Slidell, LA, so most winters see none.
How hot does it get in Pearl River?
July, with a typical high of 91° and a low of 73°. About 80 days a year reach 90° (Slidell Airport).
When is the first and last frost in Pearl River?
In half of years the last spring frost (32°) comes by March 3 and the first fall frost by November 21, about 263 frost-free days, at Slidell Airport.
What growing zone is Pearl River in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 22°.
What is the best time of year to visit Pearl River?
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 Pearl River getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 84% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Pearl River.
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.