Brookhaven, Mississippi climate: Normal weather by month, frost dates and records
Brookhaven's normal year runs from 36°F January nights to 90°F July afternoons, with 61.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.0°C, January lows of 2°C, July highs of 32°C, 1,564 mm of precipitation a year.
- NOAA stationBrookhaven City
- Station IDUSC00221094
- Location31.54°N 90.46°W
- Elevation435 ft (133 m)
- Population11,654
On October 14, the normal high in Brookhaven is 78°F and the normal low 54°F, and the chance of measurable rain or snow is 18%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Brookhaven.
- Jan 57° 36°
- Feb 62° 40°
- Mar 69° 46°
- Apr 75° 52°
- May 82° 61°
- Jun 88° 69°
- Jul 90° 71°
- Aug 90° 70°
- Sep 86° 65°
- Oct 78° 53°
- Nov 67° 43°
- Dec 59° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Brookhaven each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 36°F. The most precipitation falls in January (6.52 in), the least in October (3.64 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 57°F | 36°F | 46.7°F | 6.52 | 10 | <1 | 15 | 10 h 20 min |
| February | 62°F | 40°F | 50.6°F | 5.88 | 9 | <1 | 9 | 11 h |
| March | 69°F | 46°F | 57.3°F | 5.71 | 9 | <1 | 4 | 12 h |
| April | 75°F | 52°F | 63.7°F | 5.84 | 7 | <1 | <1 | 13 h |
| May | 82°F | 61°F | 71.7°F | 4.44 | 8 | 2 | <1 | 13 h 40 min |
| June | 88°F | 69°F | 78.0°F | 4.57 | 10 | 14 | <1 | 14 h 10 min |
| July | 90°F | 71°F | 80.3°F | 5.71 | 10 | 20 | <1 | 14 h |
| August | 90°F | 70°F | 80.2°F | 5.14 | 9 | 21 | <1 | 13 h 20 min |
| September | 86°F | 65°F | 75.6°F | 4.30 | 7 | 11 | <1 | 12 h 20 min |
| October | 78°F | 53°F | 65.3°F | 3.64 | 6 | 1 | 1 | 11 h 30 min |
| November | 67°F | 43°F | 55.0°F | 4.19 | 7 | <1 | 6 | 10 h 30 min |
| December | 59°F | 39°F | 48.9°F | 5.64 | 9 | <1 | 13 | 10 h 10 min |
| Year (annual) | 75°F | 54°F | 64.4°F | 61.58 | 99 | 69 | 47 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 14°C | 2°C | 8.2°C | 166 mm |
| February | 16°C | 4°C | 10.3°C | 149 mm |
| March | 20°C | 8°C | 14.1°C | 145 mm |
| April | 24°C | 11°C | 17.6°C | 148 mm |
| May | 28°C | 16°C | 22.1°C | 113 mm |
| June | 31°C | 20°C | 25.6°C | 116 mm |
| July | 32°C | 22°C | 26.8°C | 145 mm |
| August | 32°C | 21°C | 26.8°C | 131 mm |
| September | 30°C | 18°C | 24.2°C | 109 mm |
| October | 25°C | 12°C | 18.5°C | 92 mm |
| November | 19°C | 6°C | 12.8°C | 106 mm |
| December | 15°C | 4°C | 9.4°C | 143 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00221094; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Brookhaven?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, October has the fewest days with rain (6).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00221094.
When is the last frost in Brookhaven?
In Brookhaven, the last spring frost (32°F) comes after March 17 in half of years and after April 7 in one year in ten; the first autumn frost comes before November 12 in half of years and before October 26 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 171 year in 10 after April 7; 9 in 10 after February 22
- First autumn frost, half of years before
- November 121 year in 10 before October 26; 9 in 10 before December 2
NOAA puts the median frost-free season at 242 days, and the season without a hard freeze (28°F) at 271 days.
A hard freeze (28°F) comes after March 1 in half of springs and before November 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Brookhaven in zone 8b in ZIP code 39601, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Brookhaven's NOAA station is in zone 8b: the coldest night of a typical year reaches 17°F (18 complete years).
Frost dates for every NOAA station in Mississippi · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00221094; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Brookhaven?
In a normal year in Brookhaven, 69 days a year reach 90°F (2 of them 100°F or more), 47 nights fall to 32°F or colder and 99 days bring measurable precipitation.
- Days at 90°F or more
- 69a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 47a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 99a normal year
The highest temperature in this station's record (since 1893) is 109°F, on July 13, 1901; the lowest is −10°F, on February 13, 1899.
The wettest calendar year on that record is 1923, with 85.63 in; the snowiest season is 1947–48, with 7.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00221094; records: ACIS (NOAA Regional Climate Centers), station USC00221094. Records use complete months only; a month missing more than three days is left out.
How sunny is Brookhaven?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Brookhaven, 4.6 kWh per square metre a day. September is the sunniest month (82%) and February the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.8 |
| February | 68% | 3.4 |
| March | 73% | 4.5 |
| April | 78% | 5.6 |
| May | 80% | 6.1 |
| June | 80% | 6.3 |
| July | 79% | 6.0 |
| August | 81% | 5.7 |
| September | 82% | 5.1 |
| October | 81% | 4.3 |
| November | 78% | 3.3 |
| December | 69% | 2.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Brookhaven need?
A normal year in Brookhaven brings 2,300 heating degree days, 57% fewer than the median U.S. place (5,373), and 2,122 cooling degree days, 2.3 times the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,828 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 572 | 4 |
| February | 410 | 7 |
| March | 265 | 26 |
| April | 114 | 74 |
| May | 18 | 224 |
| June | 0 | 391 |
| July | 0 | 473 |
| August | 0 | 471 |
| September | 5 | 322 |
| October | 96 | 107 |
| November | 316 | 16 |
| December | 505 | 7 |
| Year (annual) | 2,300 | 2,122 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00221094. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Brookhaven been warmer than normal lately?
Over 93 complete years from 1869 to 2017, the station's annual mean temperature rose at a fitted -0.1°F per century (−0.01°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Brookhaven's climate compare?
Brookhaven is warmer than 47 of the other 80 places with their own NOAA record in Mississippi, and wetter than 53. Across the 7,247 U.S. stations with normals, its annual mean of 64.4°F is warmer than 86%.
In the Köppen classification computed from these normals, Brookhaven is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Brookhaven share this climate record?
Bogue Chitto has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Bogue Chitto, MS297 people · 8 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Brookhaven's climate
What is the coldest month in Brookhaven?
January, with a normal high of 57°F and a normal low of 36°F. The warmest is July (90°F by day, 71°F at night).
Does it snow in Brookhaven?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Brookhaven?
January, with 6.52 in of precipitation in a normal year; the driest is October with 3.64 in.
What plant hardiness zone is Brookhaven in?
The USDA's 2023 map puts Brookhaven in zone 8b in ZIP code 39601, the nearest ZIP area. By the same method at Brookhaven's NOAA station, the coldest night of a typical year reaches 17°F (18 years, 1991-2020): zone 8b.
How late can frost come in Brookhaven?
In half of years the last 32°F night comes after March 17; in one year in ten it comes after April 7. Waiting until April 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Mississippi climateThe statewide normals and every place in the state
- Hazlehurst, MS20 miles from this station, 65.7°F a year
- Monticello, MS21 miles from this station, 67.2°F a year
- McComb, MS25 miles from this station, 66.2°F a year
- Meadville, MS25 miles from this station, 65.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made