Dallas weather in May: Dallas, Texas: normal highs, lows, rain and records for May
Dallas in May has a normal high of 84°F and a normal low of 65°F, a daily mean of 74°F, rising from 79°F on the 1st to 88°F by the 31st. Measurable precipitation falls on 9 days in a normal May, 4.78 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 18°C, 121 mm of precipitation in May.
- NOAA stationDallas Fort Worth Airport
- Station IDUSW00003927
- Location32.90°N 97.02°W
- Elevation560 ft (171 m)
- From the center16 miles
- Population1,326,087
- Jan 57° 36°
- Feb 61° 40°
- Mar 69° 48°
- Apr 76° 55°
- May 84° 65°
- Jun 92° 72°
- Jul 96° 76°
- Aug 96° 76°
- Sep 89° 69°
- Oct 78° 57°
- Nov 67° 46°
- Dec 58° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Dallas in May?
The normal high is 84°F and the normal low 65°F, for a daily mean of 74.0°F. May is 8.4°F warmer than April and 7.9°F cooler than June. May is the 5th warmest month of the year in Dallas and the wettest. Across the month the normal high rises 9°F, from 79°F on May 1 to 88°F on May 31. From one year to the next May's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Mays in three average between 71°F and 77°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 79°F | 60°F | 27% | 18% |
| May 8 | 81°F | 62°F | 28% | 19% |
| May 15 | 83°F | 64°F | 28% | 20% |
| May 22 | 86°F | 67°F | 28% | 20% |
| May 31 | 88°F | 69°F | 27% | 20% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 79°F | 60°F | 27% | 18% | 13 h 30 min |
| May 2 | 79°F | 60°F | 28% | 18% | 13 h 30 min |
| May 3 | 80°F | 60°F | 28% | 18% | 13 h 30 min |
| May 4 | 80°F | 61°F | 28% | 19% | 13 h 30 min |
| May 5 | 80°F | 61°F | 28% | 19% | 13 h 30 min |
| May 6 | 80°F | 61°F | 28% | 19% | 13 h 40 min |
| May 7 | 81°F | 62°F | 28% | 19% | 13 h 40 min |
| May 8 | 81°F | 62°F | 28% | 19% | 13 h 40 min |
| May 9 | 81°F | 62°F | 28% | 19% | 13 h 40 min |
| May 10 | 82°F | 63°F | 28% | 19% | 13 h 40 min |
| May 11 | 82°F | 63°F | 28% | 19% | 13 h 40 min |
| May 12 | 82°F | 63°F | 28% | 19% | 13 h 50 min |
| May 13 | 83°F | 64°F | 28% | 19% | 13 h 50 min |
| May 14 | 83°F | 64°F | 28% | 19% | 13 h 50 min |
| May 15 | 83°F | 64°F | 28% | 20% | 13 h 50 min |
| May 16 | 84°F | 65°F | 28% | 20% | 13 h 50 min |
| May 17 | 84°F | 65°F | 28% | 20% | 13 h 50 min |
| May 18 | 84°F | 65°F | 28% | 20% | 13 h 50 min |
| May 19 | 85°F | 66°F | 28% | 20% | 14 h |
| May 20 | 85°F | 66°F | 28% | 20% | 14 h |
| May 21 | 85°F | 66°F | 28% | 20% | 14 h |
| May 22 | 86°F | 67°F | 28% | 20% | 14 h |
| May 23 | 86°F | 67°F | 28% | 20% | 14 h |
| May 24 | 86°F | 67°F | 28% | 20% | 14 h |
| May 25 | 87°F | 68°F | 28% | 20% | 14 h |
| May 26 | 87°F | 68°F | 28% | 20% | 14 h |
| May 27 | 87°F | 68°F | 28% | 20% | 14 h |
| May 28 | 87°F | 68°F | 27% | 20% | 14 h 10 min |
| May 29 | 88°F | 69°F | 27% | 20% | 14 h 10 min |
| May 30 | 88°F | 69°F | 27% | 20% | 14 h 10 min |
| May 31 | 88°F | 69°F | 27% | 20% | 14 h 10 min |
- Normal high
- 84°FMay average
- Normal low
- 65°FMay average
- Precipitation
- 4.78 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 7
- Daylight
- 13 h 30 min to 14 h 10 minMay 1 to May 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 24
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003927; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Dallas in May?
On a given May day the chance of 0.01 inch or more is 28% on average, highest around May 8 (28%). In all, 4.78 in falls on 9 days of a normal May, 2 of them with an inch or more.
In a normal May in Dallas, 7 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003927.
How humid and windy is Dallas in May?
At 3 p.m. the normal temperature is 87°F with 49% relative humidity and a dew point of 65°F; at 6 a.m. it is 71°F with 84% humidity. The wind averages 10.5 mph, most often from the south-southeast in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 71°F | 66°F | 84% | 8.4 mph | 22% |
| 9 a.m. | 78°F | 67°F | 69% | 11.0 mph | 23% |
| noon | 84°F | 66°F | 55% | 11.9 mph | 23% |
| 3 p.m. | 87°F | 65°F | 49% | 12.3 mph | 24% |
| 6 p.m. | 85°F | 65°F | 52% | 12.1 mph | 33% |
| 9 p.m. | 79°F | 66°F | 64% | 9.3 mph | 40% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003927. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Dallas?
The warmest May temperature on Dallas's official record (since 1913) is 103°F, on May 28, 1927; the coldest is 39°F, on May 4, 1954. The wettest May brought 14.98 in (2015).
The May mean against the 1991-2020 normal of 74.0°F: 2021 71.8°F (−2.2), 2022 77.9°F (+3.9), 2023 75.7°F (+1.7), 2024 77.3°F (+3.3), 2025 74.2°F (+0.2), 2026 74.8°F (+0.8). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.8°F | −2.2°F | 7.77 in |
| 2022 | 77.9°F | +3.9°F | 3.00 in |
| 2023 | 75.7°F | +1.7°F | 2.35 in |
| 2024 | 77.3°F | +3.3°F | 7.80 in |
| 2025 | 74.2°F | +0.2°F | 4.51 in |
| 2026 | 74.8°F | +0.8°F | 2.96 in |
Source: records: ACIS, NWS threaded record DALthr; recent months: ACIS, station USW00003927. Records and recent months use complete months only.
How does May in Dallas compare across Texas?
Across the 321 places PlainClimate covers in Texas, May normal highs run from 78°F in Hartley to 98°F in Terlingua; Dallas's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.