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Port Isabel, TX weather and climate

Cameron County, TX · population 5,098 · about 0 ft elevation

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

The year at a glance

Sunny days
239
clear or partly cloudy, per year
Precipitation
29 in
per year
Wet days
99
rain or snow per year
Snowfall
0 in
per year
Hot days
89
above 90 °F
Freezing nights
0
at or below 32 °F
Humidity
78%
average relative
Average temperature
74 °F
year round

Monthly temperatures

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

Daily highDaily low
6080JanMarMayJulSepNovDaily high, Jan: 69 °FDaily high, Feb: 72 °FDaily high, Mar: 76 °FDaily high, Apr: 81 °FDaily high, May: 86 °FDaily high, Jun: 90 °FDaily high, Jul: 91 °FDaily high, Aug: 92 °FDaily high, Sep: 89 °FDaily high, Oct: 85 °FDaily high, Nov: 78 °FDaily high, Dec: 71 °FDaily low, Jan: 52 °FDaily low, Feb: 56 °FDaily low, Mar: 62 °FDaily low, Apr: 67 °FDaily low, May: 73 °FDaily low, Jun: 77 °FDaily low, Jul: 78 °FDaily low, Aug: 78 °FDaily low, Sep: 75 °FDaily low, Oct: 70 °FDaily low, Nov: 62 °FDaily low, Dec: 55 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high697276818690919289857871
Daily low525662677377787875706255

Monthly precipitation

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

0.02.04.0JanMarMayJulSepNovPort Isabel, Jan: 2.2 inPort Isabel, Feb: 1.5 inPort Isabel, Mar: 1.7 inPort Isabel, Apr: 1.7 inPort Isabel, May: 1.4 inPort Isabel, Jun: 2.2 inPort Isabel, Jul: 2.4 inPort Isabel, Aug: 2.1 inPort Isabel, Sep: 5.5 inPort Isabel, Oct: 3.6 inPort Isabel, Nov: 2.6 inPort Isabel, Dec: 2.4 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Port Isabel2.21.51.71.71.42.22.42.15.53.62.62.4

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovPort Isabel, Jan: 15 daysPort Isabel, Feb: 15 daysPort Isabel, Mar: 19 daysPort Isabel, Apr: 19 daysPort Isabel, May: 23 daysPort Isabel, Jun: 24 daysPort Isabel, Jul: 24 daysPort Isabel, Aug: 23 daysPort Isabel, Sep: 19 daysPort Isabel, Oct: 23 daysPort Isabel, Nov: 20 daysPort Isabel, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Port Isabel151519192324242319232016

Compare Port Isabel with another city

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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).