Portland, TX climate
Portland has warm winters and warm summers. A typical July afternoon reaches 91°, a January night drops to 49°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Portland feels like
Winter
Spring
Summer
Fall
Portland weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 65° | 49° | 1.8" | 0 | 7 | 0 | 52° – 62° |
| February | 68° | 53° | 1.6" | 0 | 6 | 0 | 53° – 68° |
| March | 74° | 59° | 2.4" | 0 | 6 | 0 | 60° – 72° |
| April | 79° | 65° | 1.9" | 0 | 6 | 0 | 67° – 76° |
| May | 85° | 72° | 3.6" | 0 | 6 | 0 | 75° – 81° |
| June | 90° | 77° | 3.8" | 0 | 7 | 0 | 81° – 86° |
| July | 91° | 79° | 2.6" | 0 | 6 | 0 | 82° – 87° |
| August | 92° | 79° | 2.4" | 0 | 6 | 0 | 83° – 87° |
| September | 89° | 75° | 5.5" | 0 | 10 | 0 | 79° – 85° |
| October | 83° | 67° | 3.4" | 0 | 7 | 0 | 73° – 80° |
| November | 74° | 58° | 2.4" | 0 | 6 | 0 | 61° – 72° |
| December | 67° | 51° | 1.8" | 0.2" | 7 | 0 | 52° – 63° |
| Year | 80° | 65° | 33.2" | 0.2" | 79 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Portland
Portland gets 33 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 79 days a year.
A year-round growing season
Heating and cooling a home in Portland
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Portland, 18% of that work is heating and 82% is cooling, so air conditioning is the bigger bill.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Portland and its neighbors
Portland borders 1 town with climate data. January nights across them vary by 0.8°. Corpus Christi has both the coldest January nights (49°) and the hottest July afternoons (91°). Portland’s January low is 49° and its July high 91°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Portland compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Portland averaged 1.6° warmer than the 1900s. The biggest change is in February (+2.6°). The shift is larger than in 75% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Portland’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 53° to 68°. August is the most reliable, staying within 4°.
Common questions about Portland’s climate
What is the coldest month in Portland?
January, with a typical high of 65° and a low of 49°.
What is the hottest month in Portland?
August, with a typical high of 92° and a low of 79°. About 123 days a year reach 90°.
How much snow does Portland get?
Almost none. A normal year brings 0.2 inches.
When is the first frost in Portland?
Frost is uncommon. Only 89% of years see a night at 32° or below.
What is the rainiest month in Portland?
September, with 5.5 inches of rain and melted snow. The year totals 33 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Portland itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Corpus Christi, TX (13 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.