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Portland (TX) Weather and Climate: A Comprehensive Guide

The climate in Portland is marked by big temperature swings throughout the year. Temperatures range from very warm during the warmest months to pleasant in the cooler months. It receives a moderate amount of precipitation. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

In Portland, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 34°C in August to a pleasant 19°C in January.

Nighttime temperatures can drop, with average lows reaching 8°C in January. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

On average, Portland receives a reasonable amount of rainfall, with an annual precipitation of 770 mm. The seasons in Portland, bring significant changes in precipitation. The wettest month, September, receives high rainfall, with an average of 143 mm of precipitation. This rainfall is distributed across 13 rainy days.

In contrast, the driest month, February, experiences much less rainfall, totaling 29 mm over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Portland Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Portland, summer days are longer and more sunny, with daily sunshine hours peaking at 11.0 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.4 hours per average day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Corpus Christi, the United States of America (11 KM, 6 Miles).

Daily hours of sunshine

Data from: Corpus Christi, the United States of America (11 KM, 6 Miles).

Forecast for Portland (TX)

Fri   Dec 27
28°C | 14°C
E 3 m/s
almost clear and no rain

almost clear and no rain

Sat   Dec 28
30°C | 18°C
W 6 m/s
almost clear and no rain

almost clear and no rain

Sun   Dec 29
26°C | 14°C
SE 3 m/s
clear and no rain

clear and no rain

The best time of year to visit Portland in the United States of America

During the months of February, March, November and December you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Portland?
    August has an average maximum temperature of 34°C and is the warmest month of the year.
  • Which is the coldest month in Portland?
    The coldest month is January with an average maximum temperature of 19°C.
  • Which is the wettest month in Portland?
    September tops the wettest month list with 143 mm of rainfall.
  • Which is the driest month in Portland?
    February is the driest month with 29 mm of precipitation.
  • Which is the sunniest month in Portland?
    July is the sunniest month with an average of 330 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.