Biloxi climate — normals and trends
Biloxi (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.6 °C and it receives 1,386 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (27.2 °C on average) and the coldest is January (10.6 °C). Rainfall peaks in July.
Biloxi averages 10 frost days, 92 hot days (≥ 30 °C) and 140 rainy days per year.
Biloxi has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.9 °C (on 26 August 1943) and the coldest -13.5 °C (on 21 January 1985).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
BiloxiMississippi
- coords
- 30.40°, -88.89°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.6°C
Average daily high
24.4°C
Average daily low
15.6°C
Annual rainfall
1,386mm
Sunshine / day
9.6h
Mean relative humidity
77%
Average peak wind
15.0km/h
Seasonal range
16.6°C
Frost days (< 0 °C)
10 d/yr
Hot days (≥ 30 °C)
92 d/yr
Rainy days (≥ 1 mm)
140 d/yr
Annual snowfall
0.7 cm
Average feels-like high
26.1 °C
Average feels-like low
15.8 °C
Average peak gust
33.8 km/h
Tropical nights (≥ 20 °C)
142 d/yr
Solar radiation
16.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.21 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
39.9 °C
26 August 1943
Coldest day
-13.5 °C
21 January 1985
Wettest day
225 mm
19 September 1947
Windiest day
90.3 km/h
29 August 2005
Strongest gust
190.8 km/h
29 August 2005
Hottest feels-like
44.6 °C
15 July 1980
Coldest feels-like
-20.1 °C
21 January 1985
Snowiest day
11.1 cm
12 February 2010
Sunniest day
14.0 h
26 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 14.0 °C | -1.4 °C | 98 mm | -15 mm |
| Feb | 19.8 °C | +2.5 °C | 129 mm | +12 mm |
| Mar | 22.9 °C | +2.3 °C | 105 mm | -34 mm |
| Apr | 25.9 °C | +1.5 °C | 67 mm | -39 mm |
| May | 28.1 °C | 0.0 °C | 218 mm | +123 mm |
| Jun | 30.9 °C | 0.0 °C | 140 mm | +21 mm |
| Jul | 32.3 °C | +0.9 °C | 133 mm | -20 mm |
| Aug | 31.6 °C | +0.2 °C | 142 mm | -4 mm |
| Sep | 31.8 °C | +2.2 °C | 9 mm | -115 mm |
| Oct | 27.0 °C | +1.2 °C | 94 mm | +24 mm |
| Nov | 22.2 °C | +1.7 °C | 9 mm | -85 mm |
| Dec | 17.3 °C | +0.4 °C | 80 mm | -31 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Biloxi?
Biloxi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.6 °C and it receives 1,386 mm of precipitation per year.
What is the hottest day ever recorded in Biloxi?
The hottest day measured in Biloxi between 1940 and 2025 was 26 August 1943, reaching 39.9 °C.
What is the coldest day in Biloxi?
The coldest day measured in Biloxi between 1940 and 2025 was 21 January 1985, at -13.5 °C.
Does it snow in Biloxi?
Almost never: Biloxi sees virtually no snow, with about 10 frost days per year.
Has the climate of Biloxi warmed?
Yes: Biloxi warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Biloxi?
The wettest day measured in Biloxi between 1940 and 2025 was 19 September 1947, with 225 mm of rain in 24 hours.
What was the windiest day in Biloxi?
The windiest day measured in Biloxi between 1940 and 2025 was 29 August 2005, with winds reaching 90.3 km/h.
What is the warmest month in Biloxi?
The warmest month in Biloxi is July (27.2 °C on average); the coldest is January (10.6 °C).
How much does it rain in Biloxi?
Biloxi receives on average 1,386 mm of precipitation per year, spread over about 140 rainy days.
Is it sunny in Biloxi?
Biloxi gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Biloxi?
The heaviest 24-hour snowfall measured in Biloxi between 1940 and 2025 was 12 February 2010, with 11.1 cm.
Are there tropical nights in Biloxi?
Yes: Biloxi has on average 142 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Biloxi?
In Biloxi, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 15 July 1980, and the lowest was -20.1 °C on 21 January 1985.
Compare Biloxi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Biloxi