Brownsville, TX Weather
Brownsville hourly forecast: next 24 hours
Today's high of 97°F (36°C) is about 8°F (4°C) above the typical September high of 89°F (32°C).
Current conditions in detail
Brownsville weather tomorrow (Wednesday, September 16)
Tomorrow in Brownsville looks overcast, with a high of 94° and an overnight low of 80°. Rain is unlikely (13% chance). Winds top out near 16 mph, and the UV index reaches 9 (very high).
Brownsville 14-day forecast
About the weather in Brownsville
Brownsville records 115 wet days and 9.7 hours of daily sunshine in an average year. Temperatures follow a humid subtropical pattern, running 71°F (21°C) in January up to 93°F (34°C) in August.
Brownsville weather: quick facts
- Hottest month: August - highs near 93°F (34°C)
- Coldest month: January - highs near 71°F (21°C)
- Decade extremes (2015-2024): 105°F (40°C) high · 24°F (-5°C) low
- Wettest month: September (16 rainy days) · Sunniest: August (12.2 h sun/day)
- Climate type: humid subtropical
- Annual swing: 13°C between the average warmest and coolest month · day to night: 8°C
- Months averaging 30°C or hotter: 5
- Average humidity: 75%
Temperatures through the year
Warmth peaks in August: highs of 93°F (34°C), lows of 80°F (26°C). January is the coolest month, with highs of 71°F (21°C) and lows near 56°F (13°C). Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 105°F (40°C) and the lowest daily minimum 24°F (-5°C). Five of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is November through March.
Rain, sun and snow
Precipitation concentrates in September - 5.4 inches (136 mm) on 16 days - and thins out by February. Average highs hold at or above 30°C for 5 months of the year, May through September being the unbroken run.
Season by season
Spring (March through May)
Through spring, Brownsville runs hot: 83°F (29°C) by day, 70°F (21°C) after dark, and expect showers on roughly 26 days across the season. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
Summer (June through August)
Summer in Brownsville turns very hot, with daytime highs averaging 92°F (33°C) and nights around 79°F (26°C); rain falls on around 31 of the 90 days. Daylight is generous - around 12.1 hours of sun a day.
Fall (September through November)
Through fall, Brownsville brings hot afternoons: 84°F (29°C) by day, 71°F (21°C) after dark, and rain falls on around 37 of the 90 days.
Winter (December through February)
Through winter, Brownsville is mild and warm: 73°F (23°C) by day, 58°F (14°C) after dark, and expect showers on roughly 22 days across the season.
Average temperatures in Brownsville by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 71° | 56° | 8 | 1.8 in | 7.5 h/day | 73% |
| February | 74° | 58° | 6 | 1.2 in | 8.1 h/day | 75% |
| March | 79° | 65° | 8 | 2.6 in | 8.3 h/day | 76% |
| April | 83° | 70° | 8 | 2.8 in | 9.8 h/day | 75% |
| May | 88° | 75° | 10 | 3.0 in | 11.4 h/day | 77% |
| June | 90° | 78° | 12 | 3.4 in | 12.0 h/day | 76% |
| July | 92° | 79° | 9 | 2.9 in | 12.0 h/day | 73% |
| August | 93° | 80° | 10 | 2.3 in | 12.2 h/day | 72% |
| September | 89° | 77° | 16 | 5.4 in | 10.4 h/day | 76% |
| October | 85° | 71° | 11 | 2.9 in | 9.7 h/day | 73% |
| November | 78° | 64° | 10 | 2.6 in | 7.9 h/day | 76% |
| December | 74° | 60° | 7 | 1.4 in | 7.4 h/day | 75% |