Brownsville, TX weather in May
Expect hot, oppressively humid, mostly dry weather in Brownsville in May, with highs near 90°F and lows near 74°F. Rain falls on about 5 days.
- Normal high
- 90°F
- Normal low
- 74°F
- Wet days
- 5
- 2.2 in total
- Muggy days
- 28
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 88°F | 93°F |
| Normal low | 71°F | 76°F |
| Chance of a wet day | 14% | 16% |
| Sunrise / sunset | 6:52 am / 8:01 pm | 6:38 am / 8:16 pm |
| Daylight | 13.1 h | 13.6 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical May day
- 6 am74°Fdew point 71°F
- 9 am82°Fdew point 71°F
- Noon87°Fdew point 70°F
- 3 pm87°Fdew point 70°F
- 6 pm82°Fdew point 71°F
- 9 pm77°Fdew point 72°F
NOAA hourly normals (local standard time) from Brownsville (5 mi away); average wind 12 mph; clear or few clouds in 61% of daytime hours, mostly cloudy or overcast in 25%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F1 of 31
- Hot dayshigh 90°F or more16 of 31
- Muggy daysdaily mean dew point 65°F or more28 of 31
- Wet daysat least 0.01 in of rain or melted snow5 of 31
- Notable rainat least 0.10 in2 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 2.2 in; a dry May brings about 0.7 in and a wet one about 3.0 in (25th and 75th percentiles). About 1 day brings half an inch or more, and about 1 an inch or more.
How May varies from year to year
- Warmest May, 1991-20202018: average high 93°F
- Coolest May1992: average high 84°F
- Wettest May2015: 9.7 in
- Driest May1998: no measurable precipitation
- Highest reading102°F (May 5, 1999)
- Lowest reading51°F (May 4, 2013)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 86°F | 90°F | 94°F |
| Normal low | 68°F | 74°F | 77°F |
| Wet days | 5 | 5 | 6 |
| Comfortable days | 3 | 1 | 0 |
| Daylight | 12.8 h | 13.4 h | 13.7 h |
Highs change by +4°F from April and +4°F into June.
Nearby alternatives in May
- Cooler: South Padre Island, TX25 mi · high 84°F · 5 wet days
How Brownsville ranks in May
- Normal high16th warmest of 378 cities; 4th of 38 in Texas
- Wet days80th driest of 378
- Comfortable days328th most of 339
What to pack for Brownsville in May
- Light, breathable clothing – highs near 90°F and about 28 muggy days
Heating and cooling
May has 0 heating degree days and 527 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How hot is Brownsville in May?
The normal high is 90°F and the normal low is 74°F. From 1991 to 2020 the hottest May reading was 102°F (May 5, 1999).
Does it rain a lot in Brownsville in May?
About 5 days in May have at least 0.01 in of precipitation, and the normal total is 2.2 in. The wettest May in 1991-2020 was in 2015 (9.7 in); the driest was in 1998, with no measurable precipitation.
Is May a good time to visit Brownsville?
May ranks 7th of 12 months on our comfort score for Brownsville (44 out of 100). It has about 1 comfortable day and about 16 days at 90°F or hotter. The best months are January, February and December.
Where the numbers come from
- Temperature, rain, frost dates and humidity and wind by hour: Brownsville (USW00012919), 5.0 mi E of the city center, 23 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Port Isabel (USC00417179), 18 mi NE of the city center, 17 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Mcallen Miller Intl Airport (USW00012959), 51 mi WNW of the city center, 100 ft (65 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Brownsville/S Padre Island Intl Airport (722500-12919), 4.7 mi E of the city center, 19 ft . Hourly observations, 1991-2020.