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Port Arthur, TX weather and climate

Jefferson County, TX · population 55,779 · about 7 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Port Arthur's own coordinates.

The year at a glance

Sunny days
213
clear or partly cloudy, per year
Precipitation
53 in
per year
Wet days
134
rain or snow per year
Snowfall
0 in
per year
Hot days
93
above 90 °F
Freezing nights
8
at or below 32 °F
Humidity
79%
average relative
Average temperature
70 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
406080JanMarMayJulSepNovDaily high, Jan: 63 °FDaily high, Feb: 67 °FDaily high, Mar: 73 °FDaily high, Apr: 79 °FDaily high, May: 86 °FDaily high, Jun: 91 °FDaily high, Jul: 92 °FDaily high, Aug: 93 °FDaily high, Sep: 89 °FDaily high, Oct: 82 °FDaily high, Nov: 72 °FDaily high, Dec: 65 °FDaily low, Jan: 44 °FDaily low, Feb: 48 °FDaily low, Mar: 53 °FDaily low, Apr: 60 °FDaily low, May: 67 °FDaily low, Jun: 73 °FDaily low, Jul: 75 °FDaily low, Aug: 74 °FDaily low, Sep: 71 °FDaily low, Oct: 61 °FDaily low, Nov: 51 °FDaily low, Dec: 46 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high636773798691929389827265
Daily low444853606773757471615146

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovPort Arthur, Jan: 4.7 inPort Arthur, Feb: 3.4 inPort Arthur, Mar: 3.9 inPort Arthur, Apr: 4.4 inPort Arthur, May: 3.8 inPort Arthur, Jun: 5.2 inPort Arthur, Jul: 4.2 inPort Arthur, Aug: 4.8 inPort Arthur, Sep: 5.4 inPort Arthur, Oct: 4.1 inPort Arthur, Nov: 4.3 inPort Arthur, Dec: 4.7 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Port Arthur4.73.43.94.43.85.24.24.85.44.14.34.7

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovPort Arthur, Jan: 15 daysPort Arthur, Feb: 12 daysPort Arthur, Mar: 16 daysPort Arthur, Apr: 17 daysPort Arthur, May: 19 daysPort Arthur, Jun: 20 daysPort Arthur, Jul: 19 daysPort Arthur, Aug: 19 daysPort Arthur, Sep: 20 daysPort Arthur, Oct: 23 daysPort Arthur, Nov: 19 daysPort Arthur, Dec: 15 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Port Arthur151216171920191920231915

Compare Port Arthur with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Texas city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).