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Atlanta vs Las Vegas weather: climate comparison
Las Vegas is the warmer of the two, averaging 68°F (20°C) over the year against 62°F (17°C) in Atlanta. Atlanta is wetter, with 49.0 in (1245 mm) of precipitation a year to Las Vegas's 5.2 in (131 mm). Below: every month side by side, from 30 years of ERA5 data (1996–2025).
- Mean temperature
- 16.7°C Atlanta
20.2°C Las Vegas - Annual precipitation
- 1245.1 mm Atlanta
130.9 mm Las Vegas - Rainy days a year
- 128 Atlanta
25 Las Vegas - Sunshine per day
- 9.1 h Atlanta
11.3 h Las Vegas
Month by month
| Month | Atlanta | Las Vegas |
|---|---|---|
| January | 10.9°C | 14.1°C |
| February | 13.5°C | 16.3°C |
| March | 17.4°C | 20.9°C |
| April | 21.8°C | 25.4°C |
| May | 26.2°C | 30.8°C |
| June | 29.6°C | 36.8°C |
| July | 30.8°C | 39.5°C |
| August | 30.4°C | 38.2°C |
| September | 27.5°C | 33.9°C |
| October | 22.4°C | 26.5°C |
| November | 16.8°C | 18.9°C |
| December | 12.4°C | 13.3°C |
Year at a glance
| Measure | Atlanta | Las Vegas |
|---|---|---|
| Mean annual temperature | 16.7°C | 20.2°C |
| Warmest month (avg high) | Jul · 31°C | Jul · 39°C |
| Coldest month (avg low) | Jan · 2°C | Dec · 4°C |
| Annual range (warmest high − coldest low) | 29°C | 36°C |
| Annual precipitation | 1245.1 mm | 130.9 mm |
| Rainy days per year | 128 | 25 |
| Wettest / driest month | Jul / Oct | Feb / Jun |
| Average sunshine per day | 9.1 h | 11.3 h |
In short: Las Vegas is the warmest overall (20.2°C mean); Atlanta gets the most precipitation (1245.1 mm a year); Las Vegas is the sunniest (11.3 h a day on average); Atlanta has the smallest swing between its warmest and coldest months.
Record high 1996–2025: Atlanta 39.9°C (2012-06-30), Las Vegas 47.4°C (2024-07-07). Record low: Atlanta -13.6°C (2022-12-24), Las Vegas -6.9°C (2008-12-19).
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Monthly means of daily ERA5 values, 1996–2025, for the grid cells nearest Atlanta (33.78, -84.40) and Las Vegas (36.17, -115.13).
Which months differ most?
The gap in average highs is widest in July, when Las Vegas runs 16°F / 9°C warmer, and narrowest in December (2°F / 1°C apart). The biggest rainfall difference is in July: Atlanta gets 4.8 in (121 mm) more on average.
Add a third or fourth city, or swap in any other place, in the full comparison tool. For one city in depth, see the Atlanta climate and Las Vegas climate pages.
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Questions people ask
Is Atlanta warmer than Las Vegas?
Las Vegas is warmer on average: its mean annual temperature is 68°F (20°C) against 62°F (17°C) in Atlanta (ERA5, 1996–2025).
Which gets more rain, Atlanta or Las Vegas?
Atlanta, with about 49.0 in (1245 mm) of precipitation a year and 128 days with at least 1 mm, compared with 5.2 in (131 mm) and 25 days in Las Vegas.
Which is sunnier, Atlanta or Las Vegas?
Las Vegas averages more sunshine: 11.3 h a day against 9.1 h. Sunshine duration is modelled from cloud cover.
How reliable is this comparison?
Both cities use the same 30-year reanalysis, so differences are consistent. Absolute values describe a grid cell several kilometres wide and can differ by a degree or two from the airport station.