Climate averages 1991–2020
Gastonia weather
in May.
A warm, moderately wet month: the 5th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Gastonia: daytime highs average 25.6°C and nights cool to about 15.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 79 mm of rain on roughly 11 days, which makes May a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 00 min on an average May day.
The nearest other city in this atlas is Charlotte (31 km away). In May its highs average 25.9°C, about as warm as Gastonia, with 76 mm of rain.
Among the 498 cities listed in the United States, Gastonia ranks joint 177th of 498 for the warmest May highs and joint 214th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Gastonia is 1.8°C warmer than that mean.
From May to June, average highs rise by 3.8°C to 29.4°C, and monthly rainfall rises from 79 mm to 101 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
Gastonia climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.6°C0.8°C | 0.8°C | 98 | 9.7 | 10.110 h |
| February | 11.8°C2.1°C | 2.1°C | 88 | 8.5 | 10.911 h |
| March | 15.9°C5.5°C | 5.5°C | 114 | 10.0 | 11.912 h |
| April | 21.1°C10.2°C | 10.2°C | 97 | 8.9 | 13.113 h |
| May, selected | 25.6°C15.2°C | 15.2°C | 79 | 10.8 | 14.014 h |
| June | 29.4°C19.7°C | 19.7°C | 101 | 12.9 | 14.514 h |
| July | 31.3°C21.8°C | 21.8°C | 105 | 15.1 | 14.314 h |
| August | 30.0°C21.1°C | 21.1°C | 102 | 12.5 | 13.513 h |
| September | 26.9°C18.0°C | 18.0°C | 97 | 9.1 | 12.412 h |
| October | 21.4°C11.9°C | 11.9°C | 86 | 6.8 | 11.311 h |
| November | 15.4°C6.1°C | 6.1°C | 89 | 7.8 | 10.310 h |
| December | 11.0°C2.5°C | 2.5°C | 101 | 9.1 | 9.810 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
- Charlotte in MayUnited States · 31 kmHigh 25.9°C · Low 14.8°C · 76 mm rain
- Rock Hill in MayUnited States · 40 kmHigh 26.2°C · Low 15.7°C · 73 mm rain
- Concord (North Carolina), United States in MayUnited States · 57 kmHigh 26.0°C · Low 15.3°C · 80 mm rain
- Winston-Salem in MayUnited States · 126 kmHigh 24.9°C · Low 14.0°C · 84 mm rain
- Asheville in MayUnited States · 129 kmHigh 22.3°C · Low 11.7°C · 90 mm rain
- High Point in MayUnited States · 132 kmHigh 24.9°C · Low 14.1°C · 87 mm rain
- Columbia (South Carolina), United States in MayUnited States · 141 kmHigh 27.6°C · Low 16.3°C · 76 mm rain
- Greensboro in MayUnited States · 155 kmHigh 24.9°C · Low 14.1°C · 88 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 Gastonia) is explained once on the Gastonia year overview and on the Sources, method and limits page.