As of 14:09 CDT

Port Arthur, TX weather in December

89°

Port Arthur, Sunday, 9 August, 14:09

Overcast. Feels like 102°. High 90°, low 77°.

Pressure30.06 inHg

Wind8.6 mph SE

Humidity72%

Visibility6.2 mi

Dew point78°

See detailed hourly forecast

In December, Port Arthur, TX averages a high of 61.3° and a low of 50.9°. About 4.8 inches of precipitation fall over the month (10 wet days). The record high is 79° (2025) and the record low 16.2° (1989). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	62.8°	52°	20%	75.6° (2023)	34.7° (2020)
2	63.7°	53.2°	27%	74.7° (2022)	36.5° (1974)
3	64.2°	54.1°	28%	77° (2022)	39.4° (1974)
4	63.3°	52.9°	37%	76.6° (2017)	37.8° (2009)
5	62.8°	52.5°	32%	75.9° (1998)	34° (2009)
6	62.8°	52.5°	33%	77.4° (2022)	37.6° (1964)
7	61.9°	52.5°	30%	78.4° (2022)	34.5° (2011)
8	63.1°	51.8°	32%	78.4° (2022)	32.7° (2006)
9	63°	52.7°	35%	78.3° (2022)	29.7° (2017)
10	62.1°	50.5°	32%	77.9° (2021)	33.4° (1978)
11	60.8°	50°	30%	74.1° (2021)	36° (2008)
12	61.7°	51.6°	32%	74.5° (2025)	31.8° (1962)
13	63°	52°	40%	77.4° (2025)	26.4° (1962)
14	62.1°	51.8°	35%	76.3° (2021)	30.6° (1985)
15	62.1°	51.3°	32%	76.5° (2024)	32.2° (2025)
16	60.6°	50.5°	38%	77.5° (2021)	30.2° (1989)
17	59.5°	49.6°	23%	76.6° (2021)	32.5° (1989)
18	61°	50°	32%	76.1° (2024)	32.9° (1979)
19	60.4°	50.5°	32%	73.6° (2017)	29.5° (1996)
20	61.2°	51.1°	28%	75.9° (2025)	31.6° (1996)
21	61.2°	51.3°	35%	78.1° (2025)	32.2° (1973)
22	61.3°	50.5°	35%	75.4° (2017)	23.5° (1989)
23	60.3°	50°	40%	76.3° (2025)	16.2° (1989)
24	58.8°	48.4°	37%	75.4° (2025)	19.9° (1989)
25	57.7°	46.9°	28%	77° (2021)	16.9° (1983)
26	59°	48°	30%	76.6° (2025)	22.1° (1983)
27	61°	50.2°	35%	77.4° (2025)	34° (2022)
28	61°	50.5°	38%	79° (2025)	36.1° (1983)
29	59.7°	49.8°	37%	77.4° (2021)	28° (1983)
30	59.5°	50.2°	37%	77.5° (2021)	25.5° (1983)
31	60.1°	50.2°	43%	77.4° (2021)	25.5° (1983)