Climate averages 1991–2020
Carrollton weather
in May.
A warm, wet month: the 5th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Carrollton: daytime highs average 27.6°C and nights cool to about 18.6°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 132 mm of rain on roughly 11 days, which makes May a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 50 min on an average May day.
The nearest other city in this atlas is Lewisville (14 km away). In May its highs average 27.7°C, about as warm as Carrollton, with 132 mm of rain.
Among the 498 cities listed in the United States, Carrollton ranks joint 111th of 498 for the warmest May highs and joint 470th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Carrollton is 3.8°C warmer than that mean.
From May to June, average highs rise by 4.1°C to 31.7°C, and monthly rainfall falls from 132 mm to 82 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Carrollton climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.8°C3.5°C | 3.5°C | 68 | 6.9 | 10.210 h |
| February | 15.2°C5.5°C | 5.5°C | 70 | 7.1 | 11.011 h |
| March | 19.4°C9.4°C | 9.4°C | 95 | 8.9 | 12.012 h |
| April | 23.7°C13.7°C | 13.7°C | 103 | 8.1 | 13.013 h |
| May, selected | 27.6°C18.6°C | 18.6°C | 132 | 10.9 | 13.814 h |
| June | 31.7°C23.0°C | 23.0°C | 82 | 7.7 | 14.314 h |
| July | 34.3°C25.3°C | 25.3°C | 45 | 5.4 | 14.114 h |
| August | 34.2°C25.3°C | 25.3°C | 51 | 5.2 | 13.413 h |
| September | 30.4°C21.4°C | 21.4°C | 72 | 6.1 | 12.412 h |
| October | 24.9°C15.5°C | 15.5°C | 96 | 7.5 | 11.411 h |
| November | 18.4°C9.4°C | 9.4°C | 88 | 6.8 | 10.510 h |
| December | 13.7°C4.8°C | 4.8°C | 85 | 6.8 | 10.010 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Lewisville in MayUnited States · 14 kmHigh 27.7°C · Low 18.6°C · 132 mm rain
- Richardson in MayUnited States · 15 kmHigh 27.4°C · Low 18.3°C · 138 mm rain
- Irving in MayUnited States · 16 kmHigh 27.9°C · Low 18.7°C · 123 mm rain
- Plano in MayUnited States · 19 kmHigh 27.2°C · Low 18.2°C · 138 mm rain
- Flower Mound in MayUnited States · 20 kmHigh 27.6°C · Low 18.5°C · 132 mm rain
- Dallas in MayUnited States · 21 kmHigh 27.9°C · Low 18.7°C · 127 mm rain
- Frisco in MayUnited States · 23 kmHigh 27.1°C · Low 18.0°C · 142 mm rain
- Garland in MayUnited States · 24 kmHigh 27.4°C · Low 18.3°C · 138 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Carrollton) is explained once on the Carrollton year overview and on the Sources, method and limits page.
Lewisville and Flower Mound lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.