Dallas, TX weather in May
In May, Dallas sees highs around 85°F and lows around 66°F: warm and often humid, with some rain. Rain falls on about 9 days.
- Normal high
- 85°F
- Normal low
- 66°F
- Wet days
- 9
- 4.6 in total
- Muggy days
- 13
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 81°F | 90°F |
| Normal low | 61°F | 71°F |
| Chance of a wet day | 28% | 28% |
| Sunrise / sunset | 6:39 am / 8:08 pm | 6:20 am / 8:29 pm |
| Daylight | 13.5 h | 14.2 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 am67°Fdew point 61°F
- 9 am73°Fdew point 62°F
- Noon79°Fdew point 62°F
- 3 pm82°Fdew point 61°F
- 6 pm80°Fdew point 61°F
- 9 pm74°Fdew point 62°F
NOAA hourly normals (local standard time) from Dallas Ft Worth Airport (15 mi away); average wind 11 mph; clear or few clouds in 27% of daytime hours, mostly cloudy or overcast in 56%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F4 of 31
- Hot dayshigh 90°F or more8 of 31
- Muggy daysdaily mean dew point 65°F or more13 of 31
- Wet daysat least 0.01 in of rain or melted snow9 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 4.6 in; a dry May brings about 2.6 in and a wet one about 6.1 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 2 an inch or more.
How May varies from year to year
- Warmest May, 1991-20201998: average high 91°F
- Coolest May1992: average high 80°F
- Wettest May2015: 15.0 in
- Driest May1996: 0.8 in
- Highest reading102°F (May 31, 1998)
- Lowest reading40°F (May 3, 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 | 77°F | 85°F | 93°F |
| Normal low | 57°F | 66°F | 74°F |
| Wet days | 7 | 9 | 7 |
| Comfortable days | 14 | 4 | 0 |
| Daylight | 13.0 h | 13.8 h | 14.3 h |
Highs change by +8°F from April and +8°F into June.
Nearby alternatives in May
- Drier: Conroe, TX188 mi · high 87°F · 6 wet days
- Cooler: Oklahoma City, OK190 mi · high 79°F · 10 wet days
How Dallas ranks in May
- Normal high68th warmest of 378 cities; 22nd of 38 in Texas
- Wet days180th driest of 378
- Comfortable days266th most of 339
What to pack for Dallas in May
- Light, breathable clothing – highs near 85°F and about 13 muggy days
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
May has 6 heating degree days and 330 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How hot is Dallas in May?
The normal high is 85°F and the normal low is 66°F. From 1991 to 2020 the hottest May reading was 102°F (May 31, 1998).
Does it rain a lot in Dallas in May?
About 9 days in May have at least 0.01 in of precipitation, and the normal total is 4.6 in. The wettest May in 1991-2020 was in 2015 (15.0 in); the driest was in 1996 (0.8 in).
Is May a good time to visit Dallas?
May ranks 8th of 12 months on our comfort score for Dallas (53 out of 100). It has about 4 comfortable days and about 8 days at 90°F or hotter. The best months are March and April.
Where the numbers come from
- Temperature, rain, snow depth and frost dates: Dallas Love Fld (USW00013960), 5.5 mi NNW of the city center, 440 ft . NOAA normals and daily records, 1991-2020.
- Snowfall, humidity and wind by hour and cloud cover: Dallas Ft Worth Airport (USW00003927), 15 mi WNW of the city center, 560 ft (132 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Dallas/Ft Worth International Airport (722590-03927), 15 mi WNW of the city center, 544 ft (116 ft higher than the city). Hourly observations, 1991-2020.