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Biloxi, Mississippi climate

Cfa Humid subtropical

Biloxi has a seasonal warm-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 32°C, while the coldest is January averaging around 6°C at night. Precipitation is fairly even year-round, totalling about 1596 mm.

☀️ Summers

Hot

Highs near 32°C in July.

About 67 days a year above 32 °C

❄️ Winters

Cool

Lows near 6°C in January.

About 15 freezing nights a year

🌧️ Rain

Very wet

About 1596 mm of rain a year.

Wettest in July

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+0.1 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Biloxi climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	16	18	21	25	29	32	32	33	31	27	21	18
Avg temp (°C)	11	13	16	20	24	27	28	28	26	21	15	12
Avg low (°C)	6	8	11	15	19	23	24	24	21	16	10	7
Precipitation (mm)	124	113	133	140	120	175	183	166	132	94	102	114

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	16	18	21	25	29	32
Avg temp (°C)	11	13	16	20	24	27
Avg low (°C)	6	8	11	15	19	23
Precipitation (mm)	124	113	133	140	120	175

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	32	33	31	27	21	18
Avg temp (°C)	28	28	26	21	15	12
Avg low (°C)	24	24	21	16	10	7
Precipitation (mm)	183	166	132	94	102	114

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	9	9	8	7	7	11	12	14	9	8	8	11
Days with high ≥ 32°C (days)	0.0	—	—	0.1	2	12	19	21	11	1	—	—
Days with low ≤ 0°C (days)	7	3	0.7	0.0	—	—	0.0	—	—	—	1.0	4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	9	9	8	7	7	11
Days with high ≥ 32°C (days)	0.0	—	—	0.1	2	12
Days with low ≤ 0°C (days)	7	3	0.7	0.0	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	12	14	9	8	8	11
Days with high ≥ 32°C (days)	19	21	11	1	—	—
Days with low ≤ 0°C (days)	0.0	—	—	—	1.0	4

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	61	61	57	53	49	54	57	54	47	42	48	61
Clear days (≤ 30% cloud)	7	7	8	9	10	7	6	7	11	14	11	7
Partly cloudy days (30–70%)	8	8	10	10	12	13	14	15	11	9	11	10
Cloudy days (≥ 70%)	15	14	13	11	9	10	11	9	8	8	9	15
Relative humidity (%)	84	84	82	81	79	79	80	80	80	81	83	86
Wind speed (km/h)	2.1	2.1	2.1	2.1	2.0	1.8	1.7	1.8	2.1	2.2	2.2	2.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	61	61	57	53	49	54
Clear days (≤ 30% cloud)	7	7	8	9	10	7
Partly cloudy days (30–70%)	8	8	10	10	12	13
Cloudy days (≥ 70%)	15	14	13	11	9	10
Relative humidity (%)	84	84	82	81	79	79
Wind speed (km/h)	2.1	2.1	2.1	2.1	2.0	1.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	57	54	47	42	48	61
Clear days (≤ 30% cloud)	6	7	11	14	11	7
Partly cloudy days (30–70%)	14	15	11	9	11	10
Cloudy days (≥ 70%)	11	9	8	8	9	15
Relative humidity (%)	80	80	80	81	83	86
Wind speed (km/h)	1.7	1.8	2.1	2.2	2.2	2.1

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Gulfport - Biloxi AP (NOAA GHCN station USW00093874), about 19 km from the city centre.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →