Biloxi, Mississippi climate: Normal weather by month, frost dates and records
Biloxi's normal year runs from 44°F January nights to 90°F July afternoons, with 66.8 inches of precipitation and less than an inch of snow (0.1 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 20.3°C, January lows of 6°C, July highs of 32°C, 1,697 mm of precipitation a year.
- NOAA stationBiloxi
- Station IDUSC00220792
- Location30.39°N 89.00°W
- Elevation10 ft (3 m)
- From the center5 miles
- Population48,144
On October 20, the normal high in Biloxi is 78°F and the normal low 60°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Biloxi.
- Jan 60° 44°
- Feb 63° 47°
- Mar 69° 53°
- Apr 76° 60°
- May 83° 68°
- Jun 88° 74°
- Jul 90° 75°
- Aug 90° 75°
- Sep 87° 72°
- Oct 79° 62°
- Nov 69° 51°
- Dec 62° 46°
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 Biloxi each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 44°F. The most precipitation falls in July (8.09 in), the least in October (3.68 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 60°F | 44°F | 51.7°F | 5.37 | 10 | <1 | 5 | 10 h 20 min |
| February | 63°F | 47°F | 55.2°F | 4.37 | 9 | <1 | 2 | 11 h 10 min |
| March | 69°F | 53°F | 61.3°F | 5.72 | 8 | <1 | 1 | 12 h |
| April | 76°F | 60°F | 68.1°F | 5.65 | 7 | <1 | <1 | 12 h 50 min |
| May | 83°F | 68°F | 75.6°F | 5.23 | 7 | 1 | <1 | 13 h 40 min |
| June | 88°F | 74°F | 80.9°F | 7.13 | 12 | 9 | <1 | 14 h 10 min |
| July | 90°F | 75°F | 82.5°F | 8.09 | 14 | 16 | <1 | 14 h |
| August | 90°F | 75°F | 82.5°F | 6.93 | 13 | 18 | <1 | 13 h 20 min |
| September | 87°F | 72°F | 79.2°F | 5.24 | 9 | 8 | <1 | 12 h 20 min |
| October | 79°F | 62°F | 70.5°F | 3.68 | 7 | <1 | <1 | 11 h 30 min |
| November | 69°F | 51°F | 60.2°F | 4.36 | 7 | <1 | 1 | 10 h 40 min |
| December | 62°F | 46°F | 54.0°F | 5.03 | 9 | <1 | 3 | 10 h 10 min |
| Year (annual) | 76°F | 61°F | 68.5°F | 66.80 | 111 | 52 | 11 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 15°C | 6°C | 10.9°C | 136 mm |
| February | 17°C | 8°C | 12.9°C | 111 mm |
| March | 21°C | 12°C | 16.3°C | 145 mm |
| April | 24°C | 16°C | 20.1°C | 144 mm |
| May | 28°C | 20°C | 24.2°C | 133 mm |
| June | 31°C | 23°C | 27.2°C | 181 mm |
| July | 32°C | 24°C | 28.1°C | 205 mm |
| August | 32°C | 24°C | 28.1°C | 176 mm |
| September | 31°C | 22°C | 26.2°C | 133 mm |
| October | 26°C | 17°C | 21.4°C | 93 mm |
| November | 21°C | 11°C | 15.7°C | 111 mm |
| December | 17°C | 8°C | 12.2°C | 128 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00220792; 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 Biloxi?
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 (7).
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 USC00220792.
When is the last frost in Biloxi?
In Biloxi, the last spring frost (32°F) comes after February 12 in half of years and after March 11 in one year in ten; the first autumn frost comes before December 14 in half of years and before November 16 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
- February 121 year in 10 after March 11; 9 in 10 after January 18
- First autumn frost, half of years before
- December 141 year in 10 before November 16; 9 in 10 before January 11
NOAA puts the median frost-free season at 301 days, and the season without a hard freeze (28°F) at 335 days.
A hard freeze (28°F) comes after January 27 in half of springs and before January 2 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Biloxi in zone 9a across its 4 ZIP code areas (9a in 39532, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Biloxi's NOAA station is in zone 9a: the coldest night of a typical year reaches 23°F (26 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 USC00220792; 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.
What hardiness zone is each Biloxi ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Biloxi's 4 ZIP code areas are all in zone 9a. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Biloxi?
In a normal year in Biloxi, 52 days a year reach 90°F, 11 nights fall to 32°F or colder and 111 days bring measurable precipitation.
- Days at 90°F or more
- 52a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 11a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 111a normal year
The highest temperature in this station's record (since 1893) is 104°F, on August 23, 1924; the lowest is 1°F, on February 12, 1899.
The wettest calendar year on that record is 2017, with 92.93 in; the snowiest season is 1953–54, with 2.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00220792; records: ACIS (NOAA Regional Climate Centers), station USC00220792. Records use complete months only; a month missing more than three days is left out.
How sunny is Biloxi?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Biloxi, 4.7 kWh per square metre a day. October is the sunniest month (84%) and February the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 73% | 3.0 |
| February | 71% | 3.5 |
| March | 76% | 4.7 |
| April | 80% | 5.8 |
| May | 83% | 6.4 |
| June | 80% | 6.2 |
| July | 78% | 5.9 |
| August | 80% | 5.6 |
| September | 83% | 5.2 |
| October | 84% | 4.5 |
| November | 81% | 3.5 |
| December | 72% | 2.7 |
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 Biloxi need?
A normal year in Biloxi brings 1,458 heating degree days, 73% fewer than the median U.S. place (5,373), and 2,754 cooling degree days, 3.0 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,974 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 415 | 3 |
| February | 281 | 8 |
| March | 156 | 43 |
| April | 41 | 134 |
| May | 2 | 329 |
| June | 0 | 477 |
| July | 0 | 543 |
| August | 0 | 543 |
| September | 0 | 426 |
| October | 32 | 202 |
| November | 183 | 39 |
| December | 347 | 8 |
| Year (annual) | 1,458 | 2,754 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00220792. 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 Biloxi been warmer than normal lately?
2024 averaged 70.9°F, 2.4°F above the 1991-2020 normal of 68.5°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2024 | 70.9°F | +2.4°F | 62.99 |
Over 82 complete years from 1894 to 2024, the station's annual mean temperature rose at a fitted 0.7°F per century (+0.04°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00220792; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Biloxi's climate compare?
Biloxi is warmer than 80 of the other 80 places with their own NOAA record in Mississippi, and wetter than 72. Across the 7,247 U.S. stations with normals, its annual mean of 68.5°F is warmer than 94%.
In the Köppen classification computed from these normals, Biloxi 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 Biloxi share this climate record?
6 places have no NOAA station with 1991-2020 normals of their 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.
- Ocean Springs, MS18,954 people · 13 mi E
- D'Iberville, MS13,399 people · 7 mi NE
- Gulf Hills, MS8,193 people · 11 mi E
- St. Martin, MS7,797 people · 9 mi E
- Gulf Park Estates, MS6,517 people · 14 mi E
- Latimer, MS6,474 people · 11 mi NE
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 Biloxi's climate
What is the coldest month in Biloxi?
January, with a normal high of 60°F and a normal low of 44°F. The warmest is July (90°F by day, 75°F at night).
Does it snow in Biloxi?
Rarely: NOAA's normal is 0.1 inch a year.
What is the rainiest month in Biloxi?
July, with 8.09 in of precipitation in a normal year; the driest is October with 3.68 in.
What plant hardiness zone is Biloxi in?
The USDA's 2023 map puts Biloxi in zone 9a across its 4 ZIP code areas (9a in 39532, the largest). By the same method at Biloxi's NOAA station, the coldest night of a typical year reaches 23°F (26 years, 1991-2020): zone 9a.
How late can frost come in Biloxi?
In half of years the last 32°F night comes after February 12; in one year in ten it comes after March 11. Waiting until March 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Biloxi in OctoberThis month day by day, its records and recent years
- Mississippi climateThe statewide normals and every place in the state
- Gulfport, MS5 miles from this station, 68.3°F a year
- Saucier, MS16 miles from this station, 66.9°F a year
- Waveland, MS24 miles from this station, 67.0°F a year
- Pascagoula, MS29 miles from this station, 67.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made