As of 16:32 EDT

Port St. Lucie, FL weather in December

90°

Port St. Lucie, Sunday, 9 August, 16:32

Partly cloudy. Feels like 102°. High 91°, low 78°.

Pressure30.06 inHg

Wind7 mph SE

Humidity68%

Visibility6.2 mi

Dew point78°

See detailed hourly forecast

In December, Port St. Lucie, FL averages a high of 73.9° and a low of 61.3°. About 1.3 inches of precipitation fall over the month (5 wet days). The record high is 87.1° (2021) and the record low 28° (1989). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	75.4°	63.7°	10%	84.4° (2023)	45.9° (2020)
2	75.4°	63.5°	13%	85.3° (2018)	42.8° (2020)
3	75.2°	63.1°	8%	85.6° (2018)	44.6° (2019)
4	75.4°	63.1°	12%	84.2° (2023)	46.9° (1974)
5	75.4°	62.4°	15%	86.2° (2025)	45.3° (2019)
6	75.4°	62.6°	12%	85.5° (2025)	46.6° (2018)
7	75°	62.1°	20%	86.2° (2025)	39.6° (2010)
8	74.8°	63°	17%	85.3° (2021)	40.6° (2010)
9	75.2°	63.5°	22%	83.8° (1978)	40.6° (2020)
10	75.2°	62.8°	13%	84.6° (2012)	40.8° (2020)
11	74.1°	61.9°	17%	85.6° (2024)	39.9° (2017)
12	73.9°	61.3°	27%	84° (2021)	39° (2017)
13	74.5°	62.4°	27%	84° (1961)	33.1° (1962)
14	74.5°	62.6°	20%	83.3° (2025)	32.5° (2010)
15	74.1°	62.4°	20%	83.3° (2022)	36.5° (2010)
16	73.8°	61.3°	27%	81.7° (2000)	35.6° (1968)
17	73.2°	60.4°	25%	85.1° (2019)	41.4° (1968)
18	72.9°	59.7°	18%	86° (1961)	40.1° (1973)
19	73°	59.4°	7%	86.2° (2025)	42.1° (1988)
20	73°	60.3°	17%	82.8° (2025)	37.8° (1981)
21	72.9°	60.3°	22%	82.8° (1971)	46.6° (2003)
22	72.3°	59.9°	13%	82.4° (2013)	39.4° (1973)
23	73.8°	60.6°	18%	81.9° (2015)	40.1° (1989)
24	73°	60.6°	17%	84.2° (2014)	28° (1989)
25	72.5°	59.9°	23%	83.5° (1981)	30.4° (1989)
26	71.2°	58.5°	23%	82° (2021)	32.5° (1983)
27	71.2°	58.1°	18%	82.6° (1981)	36.9° (2010)
28	72.9°	59.5°	22%	82.8° (2021)	37.2° (2010)
29	74.1°	60.3°	13%	85.8° (2021)	37.8° (2010)
30	73.4°	60.3°	13%	86.2° (2021)	38.5° (1961)
31	75°	61.7°	12%	87.1° (2021)	37.4° (2000)