Fort Pierce weather in December

In December, Fort Pierce sees average daytime highs of 73°F and overnight lows near 65°F, with 1.7 in of rain across 7.3 wet days and about 10.3 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 73°F through the month. The sky is clear or mostly clear about 32% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 24 min at the start of December to 10 h 18 min by month's end. Set against the rest of the year, December is Fort Pierce's 7th-clearest and 5th-windiest month. For the whole year in context, see Fort Pierce's year-round climate.

Daytime high
73°
10th warmest
Overnight low
65°
3rd coldest
Rainfall
1.7 in
7.3 wet days
Daylight
10 h 18 min
7:09 AM – 5:26 PM
Cloud cover
56%
7th clearest
Wind
11 mph
5th windiest
Solar energy
3.05 kWh/m²
Travel score
7.2
out of 10

Fort Pierce is county seat of St. Lucie County, Florida, United States.

Density
587/km²
people per km²
Founded
1901

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 73°F through the month.

A typical December day in Fort Pierce reaches about 73°F in the afternoon and slips back to 65°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 79°F. Set against its neighbours, December runs about 3°F cooler than November and about 2°F warmer than January.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17567
27567
37466
47466
57466
67466
77466
87466
97466
107465
117465
127365
137365
147365
157365
167365
177364
187364
197364
207364
217364
227264
237264
247264
257264
267264
277263
287263
297263
307263
317263

How December really feels in Fort Pierce

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Fort Pierce weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan71° / 62°2.17.210.57.1
Feb73° / 63°1.86.8117.3
Mar75° / 65°2.37.511.87.5
Apr78° / 69°2.27.912.67.2
May82° / 74°3.01113.36.3
Jun84° / 77°5.619.813.74.2
Jul86° / 78°4.620.913.63.8
Aug86° / 79°5.723133.5
Sep84° / 78°6.02112.24.0
Oct81° / 74°4.313.311.35.9
Nov76° / 69°2.29.310.67.1
Dec73° / 65°1.77.310.37.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55842
65842
75743
85743
95644
105644
115545
125446
135347
145248
155149
165149
174951
184951
194852
204852
214753
224753
234753
244852
254852
264852
274852
284951
295050
305050
315149

Chance of precipitation in December

Any precipitation

Fort Pierce gets around 1.7 in of rain over 7.3 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 24% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
226
325
425
525
625
725
826
926
1025
1125
1225
1325
1425
1524
1624
1724
1824
1924
2024
2123
2223
2323
2423
2523
2623
2724
2824
2924
3024
3124

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 34% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1211927258
2211827258
3211827268
4221826268
5231725278
6231724288
7241624288
8241623298
9251623298
10261522298
11271522297
12271422297
13281422297
14291422297
15301321287
16311321287
17321321277
18321321277
19331321267
20341321267
21341321257
22341321257
23341321257
24341421247
25341421247
26341421257
27331421257
28331421257
29331421257
30341420257
31341420257

Wind in December

Winds average 11 mph in December.

Across December, daily wind ranges from about 11 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
111light breeze
211light breeze
311light breeze
411light breeze
511light breeze
611light breeze
711light breeze
811light breeze
911light breeze
1011light breeze
1111light breeze
1211light breeze
1311light breeze
1411light breeze
1511light breeze
1611light breeze
1711light breeze
1811light breeze
1911light breeze
2011light breeze
2111light breeze
2211light breeze
2311light breeze
2411light breeze
2511light breeze
2611light breeze
2711light breeze
2811light breeze
2911light breeze
3011light breeze
3111light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 24 min at the start of December to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:59 AM to 7:16 AM, and sunset from 5:23 PM to 5:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.46:595:23
210.47:005:23
310.47:015:23
410.47:015:23
510.37:025:23
610.37:035:23
710.37:045:23
810.37:045:24
910.37:055:24
1010.37:065:24
1110.37:065:24
1210.37:075:24
1310.37:075:25
1410.37:085:25
1510.37:095:25
1610.37:095:26
1710.37:105:26
1810.37:105:26
1910.37:115:27
2010.37:115:27
2110.37:125:28
2210.37:125:28
2310.37:135:29
2410.37:135:29
2510.37:145:30
2610.37:145:30
2710.37:145:31
2810.37:155:31
2910.37:155:32
3010.37:155:33
3110.37:165:33

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.05 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.05 kWh/m² to a high of 6.41 kWh/m² in May across the year — December's 3.05 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.2Moderate
43.1Moderate
53.1Moderate
63.1Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.1Moderate
123.0Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
203.0Moderate
213.0Moderate
223.0Moderate
233.0Moderate
243.0Moderate
253.0Moderate
263.0Moderate
273.0Moderate
283.0Moderate
293.1Moderate
303.1Moderate
313.1Moderate
Planning a trip in December

Hazard calendar for Fort Pierce

In seasonPeak

None of Fort Pierce's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Fort Pierce sits in the Atlantic hurricane belt; the season peaks August–October.

Fort Pierce's rainy season runs May–October, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Fort Pierce?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.2
Sightseeing
3rd-best month of the year
5.5
Beach & pool
6th-best month of the year

December is one of the better times to visit Fort Pierce for general sightseeing.

What to pack for Fort Pierce in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Fort Pierce sees daytime highs around 73°F and nights near 65°F. Worth packing: light clothes. About 7 days see rain.

light clothes

Sea temperature near Fort Pierce in December

The nearest coast averages about 77°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 mi away) is warmest in August at about 84°F and coldest in February near 74°F.

The water stays above 68°F all year — warm enough for a swim any month.

75°80°85°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan74Refreshing
Feb74Refreshing
Mar74Refreshing
Apr76Warm
May79Warm
Jun82Warm
Jul83Tropical
Aug84Tropical
Sep84Tropical
Oct82Warm
Nov79Warm
Dec77Warm

UV index in Fort Pierce in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Fort Pierce peaks around July 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 12UV 11Dec 18UV 4
UV index (midday)Level
Jan5Moderate
Feb7High
Mar9Very high
Apr9Very high
May10Very high
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep9Very high
Oct8Very high
Nov5High
Dec4Moderate

Air quality in Fort Pierce in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Fort Pierce is worst in July — around 17 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1817 µg/m³Dec 156 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar9Good
Apr10Good
May10Good
Jun14Moderate
Jul17Moderate
Aug15Moderate
Sep10Good
Oct8Good
Nov6Good
Dec6Good
Location & terrain

Where is Fort Pierce?

Fort Pierce sits at 27.4°N, 80.3°W, 16 ft above sea level, in United States. The nearest listed city is Florida Ridge, 9.9 mi away.

Topography around Fort Pierce

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Fort Pierce.

Within 2 miles, the terrain around Fort Pierce has only modest variations in elevation — a maximum elevation change of 46 ft around an average of 13 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 148 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 200 ft.

The land around Fort Pierce is covered by water (38%) and artificial surfaces (30%) within 2 miles, water (44%), grassland (22%) and trees (20%) within 10 miles, and water (40%), grassland (28%) and trees (20%) within 50 miles.

2 miles
46 ft
10 miles
148 ft
50 miles
200 ft
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
December weather nearby: Florida Ridge 9.9 mi · Port Saint Lucie 11 mi · Vero Beach South 13 mi · Vero Beach 14 mi · Stuart 18 mi · Palm City 20 mi · Sebastian 27 mi · Jupiter 38 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Fort Pierce (27.4467°, -80.3256°, elevation 16 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).