Sinton, TX climate
Sinton has warm winters and hot summers. A typical July afternoon reaches 94°, a January night drops to 46°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Sinton feels like
Winter
Spring
Summer
Fall
Sinton 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 | 67° | 46° | 1.7" | 0 | 5 | 0 | 52° – 62° |
| February | 71° | 51° | 1.6" | 0 | 5 | 0 | 53° – 69° |
| March | 76° | 57° | 2.4" | 0 | 5 | 0 | 60° – 73° |
| April | 82° | 62° | 1.9" | 0 | 4 | 0 | 68° – 77° |
| May | 88° | 70° | 3.4" | 0 | 5 | 0 | 75° – 82° |
| June | 92° | 74° | 3.6" | 0 | 4 | 0 | 81° – 87° |
| July | 94° | 75° | 2.6" | 0 | 4 | 0 | 82° – 88° |
| August | 95° | 76° | 2.5" | 0 | 5 | 0 | 83° – 88° |
| September | 91° | 72° | 5.2" | 0 | 8 | 0 | 79° – 85° |
| October | 85° | 64° | 3.1" | 0 | 5 | 0 | 72° – 79° |
| November | 76° | 55° | 2.2" | 0 | 4 | 0 | 60° – 70° |
| December | 69° | 48° | 1.8" | 0.4" | 5 | 0 | 52° – 63° |
| Year | 82° | 62° | 31.9" | 0.4" | 57 | 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 Sinton
Sinton gets 32 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 57 days a year.
About 324 frost-free days a year
In half of years the last 32° night comes by February 1 and the first one by December 17. That leaves about 324 frost-free days for gardens, longer than 96% of U.S. towns.
Heating and cooling a home in Sinton
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Sinton, 23% of that work is heating and 77% 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.
Sinton and its neighbors
Sinton borders 2 towns with climate data. January nights across them vary by 0.2°. Morgan Farm has both the coldest January nights (46°) and the hottest July afternoons (94°). Sinton’s January low is 46° and its July high 94°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Sinton 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 Sinton averaged 1.4° warmer than the 1900s. The biggest change is in February (+2.4°). The shift is larger than in 65% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Sinton’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 69°. August is the most reliable, staying within 5°.
Common questions about Sinton’s climate
What is the coldest month in Sinton?
January, with a typical high of 67° and a low of 46°.
What is the hottest month in Sinton?
August, with a typical high of 95° and a low of 76°. About 113 days a year reach 90°.
How much snow does Sinton get?
Almost none. A normal year brings 0.4 inches.
When is the first frost in Sinton?
In half of years the first 32° night comes by December 17, and the last spring frost by February 1.
What is the rainiest month in Sinton?
September, with 5.2 inches of rain and melted snow. The year totals 32 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Sinton itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Sinton, TX (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.