Biloxi, MS Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Biloxi's primary NOAA station, BILOXI.
The climate verdict for Biloxi
Water is the standout signal in Biloxi, Mississippi: 66.8 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 69°F. It scores 80/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 76% of them.
- 69°F
- yearly average temperature, NOAA normal
- 80/100
- comfort score, above 76% of station-mapped location scores
- 66.8"
- yearly precipitation total
- 305 days
- frost-free growing season
Biloxi: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00220792 · Biloxi, MS 69°F mean · 66.8" precip
TEMP-MILD · RANK-WARM · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 69°F
- RANK-WARM #6,449
- PHOTO-FINISH ≈ Baton Rouge Ryan
- PRCP-WET 66.8"
- SWING-MID 31°F
- COMF-TOP 80/100
- LOAD-MIX H/C balanced
- STN-1 USC00220792
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Baton Rouge Ryan, LA (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every MS station list.
- Biloxi (this station) 69°F
- Hot Smithville, TX 69°F
- Near Baton Rouge Ryan, LA 69°F
- Near Jackson Whiteho…, FL 69°F
- Near Sam Rayburn Dam, TX 69°F
Biloxi sits in Mississippi, the #5 hottest U.S. state at 64.1°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · Biloxi
Biloxi: 78/100 · grade B
Biloxi publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Biloxi, not an official NOAA rating. Rankings still use Comfort Score 80/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 305 days/year | 100/100 · A |
| Normal heat + freeze calendar | 27 calendar days | 96/100 · A |
| Annual temperature balance | 68.5°F · 1.0° from 67.5°F | 95/100 · A |
| Snowfall burden | 0.1 inches/year | 89/100 · A |
| Precipitation balance | 66.8 in · 31.8 from 35 in | 0/100 · F |
Biloxi · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Biloxi is a temperate Köppen climate: Cfa
Coldest-month mean 51.7°F and warmest-month mean 82.5°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 82.5°F
- Coldest month
- 51.7°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · balanced station
Where Biloxi sits across the climate record
Three NOAA fields for Biloxi's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 6% warmest
- Among 6,861 stations, Biloxi sits in the warmer third of annual means.
- Annual precipitation
- Top 2% wettest
- Biloxi's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 89%
- Warmest-to-coldest month gap for Biloxi is compact versus 6,861 complete station-years.
How Biloxi compares across U.S. station-mapped locations
Biloxi's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
80 Top 24% score exceeds 76% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Biloxi's measured station temperature trend
MethodologyAcross 82 complete annual observations from 1894 to 2024, BILOXI warmed at a fitted rate of 0.04°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Biloxi primary station fitted change +0.04 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 60°F (15°C) | 44°F (6°C) | 52°F (11°C) | 5.4" | 0.0" | 5.1 | 0.0 |
| February | 63°F (17°C) | 47°F (8°C) | 55°F (13°C) | 4.4" | 0.0" | 1.9 | 0.0 |
| March | 69°F (21°C) | 53°F (12°C) | 61°F (16°C) | 5.7" | 0.1" | 0.5 | 0.0 |
| April | 76°F (24°C) | 60°F (16°C) | 68°F (20°C) | 5.7" | 0.0" | 0.0 | 0.0 |
| May | 83°F (28°C) | 68°F (20°C) | 76°F (24°C) | 5.2" | 0.0" | 0.0 | 1.2 |
| June | 88°F (31°C) | 74°F (23°C) | 81°F (27°C) | 7.1" | 0.0" | 0.0 | 8.7 |
| July | 90°F (32°C) | 75°F (24°C) | 83°F (28°C) | 8.1" | 0.0" | 0.0 | 16.1 |
| August | 90°F (32°C) | 75°F (24°C) | 83°F (28°C) | 6.9" | 0.0" | 0.0 | 18.0 |
| September | 87°F (31°C) | 72°F (22°C) | 79°F (26°C) | 5.2" | 0.0" | 0.0 | 7.6 |
| October | 79°F (26°C) | 62°F (17°C) | 71°F (21°C) | 3.7" | 0.0" | 0.0 | 0.3 |
| November | 69°F (21°C) | 51°F (11°C) | 60°F (16°C) | 4.4" | 0.0" | 0.7 | 0.0 |
| December | 62°F (17°C) | 46°F (8°C) | 54°F (12°C) | 5.0" | 0.0" | 2.5 | 0.0 |
The year, day by day
The year in Biloxi runs from a mild 43°F around January 12 to 90°F at the peak near July 31, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from July 23 through August 18, covering 27 dates. The broader mild season, normal highs of 70°F or more, runs March 19 to November 12.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 43°F around January 12.
Where the wet dates fall
The likeliest wet date is July 19, when 45% of years recorded at least a hundredth of an inch. The driest is May 4 at 21%. Summed across the calendar, that is about 111 wet dates a year.
The widest day
November 10 carries the biggest normal gap between afternoon and dawn, 18°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Biloxi.
Where Biloxi Stands Nationally
This is one of the wettest normals climates ranked: about 67 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 18°F.
Biloxi earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
9.5 days with precipitation
8.9 days with precipitation
Snow: 0.1"
8.0 days with precipitation
7.0 days with precipitation
7.1 days with precipitation
11.9 days with precipitation
13.9 days with precipitation
12.7 days with precipitation
8.6 days with precipitation
6.5 days with precipitation
7.3 days with precipitation
9.2 days with precipitation
Biloxi spreads its precipitation across the year
Neither half of the year dominates here: June through August take 33% of the annual total and December through February 22%, with neither reaching the 35% that would mark a distinct wet season. Biloxi has no dry season to plan around, though it does carry a 30.8°F seasonal spread.
The gap between the wettest and driest month still matters: July averages 8.1" and October 3.7". The three wettest months together take 33% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Biloxi, it arrives in quantity
66.8" of precipitation falls across only about 111 wet days here, averaging 0.60 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 111 a year, 30% of all days
- Average depth per wet day
- 0.60 inches
- Most wet days
- July, about 14
- Fewest wet days
- October, about 7
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Snow reaches Biloxi, but rarely amounts to much
The normals record 0.1 inches of snow a year here, most likely in March. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
December 14
50% probability date
Last Spring Freeze
February 12
50% probability date
Growing Season
305 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,458
Higher = more heating needed
Cooling Degree Days
2,754
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MS closest to Biloxi on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (69°F here).
- Smithville, TX 69°F · 0.0°F off
- Green Valley, AZ 68°F · 0.1°F off
- Livingston, TX 69°F · 0.1°F off
- Marrero, LA 68°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (66.8" here), excluding temperature-peer places.
- Lafayette, LA 66.8" · 0.0" off
- Galliano, LA 66.7" · 0.1" off
- Monteagle, TN 67.0" · 0.2" off
- Mobile, AL 67.1" · 0.3" off
Data-derived climate profile
How Biloxi's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Biloxi averages 66.8 inches of precipitation a year. Recorded annual snowfall is negligible. The monthly table supplies the seasonal distribution hidden by that annual total.
July and January mark the typical warm and cold ends of the calendar in Biloxi's middle-range seasonal profile. The measured spread is 30.8°F. The annual average is 69°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Biloxi's normal, at 1,458 and 2,754 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
The frost-free window extends for about 305 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
These labels group NOAA 1991-2020 normals from Biloxi's primary station, where heating and cooling demand are close enough that neither season sets the character on its own. On a balanced station like Biloxi, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Biloxi's climate
How much rain does Biloxi get? ▼
How many days above 90°F does Biloxi get? ▼
How much energy does heating and cooling require in Biloxi? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Biloxi's primary station: BILOXI (USC00220792). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 2806220). Match rule for Biloxi: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Biloxi comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.