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Las Vegas vs Seattle weather: climate comparison
Las Vegas is the warmer of the two, averaging 68°F (20°C) over the year against 52°F (11°C) in Seattle. Seattle is wetter, with 50.2 in (1275 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
- 20.2°C Las Vegas
10.9°C Seattle - Annual precipitation
- 130.9 mm Las Vegas
1274.6 mm Seattle - Rainy days a year
- 25 Las Vegas
154 Seattle - Sunshine per day
- 11.3 h Las Vegas
8.3 h Seattle
Month by month
| Month | Las Vegas | Seattle |
|---|---|---|
| January | 14.1°C | 7.3°C |
| February | 16.3°C | 8.4°C |
| March | 20.9°C | 10.6°C |
| April | 25.4°C | 13.4°C |
| May | 30.8°C | 16.9°C |
| June | 36.8°C | 20.0°C |
| July | 39.5°C | 24.0°C |
| August | 38.2°C | 24.2°C |
| September | 33.9°C | 20.4°C |
| October | 26.5°C | 14.6°C |
| November | 18.9°C | 9.8°C |
| December | 13.3°C | 6.9°C |
Year at a glance
| Measure | Las Vegas | Seattle |
|---|---|---|
| Mean annual temperature | 20.2°C | 10.9°C |
| Warmest month (avg high) | Jul · 39°C | Aug · 24°C |
| Coldest month (avg low) | Dec · 4°C | Feb · 2°C |
| Annual range (warmest high − coldest low) | 36°C | 22°C |
| Annual precipitation | 130.9 mm | 1274.6 mm |
| Rainy days per year | 25 | 154 |
| Wettest / driest month | Feb / Jun | Nov / Jul |
| Average sunshine per day | 11.3 h | 8.3 h |
In short: Las Vegas is the warmest overall (20.2°C mean); Seattle gets the most precipitation (1274.6 mm a year); Las Vegas is the sunniest (11.3 h a day on average); Seattle has the smallest swing between its warmest and coldest months.
Record high 1996–2025: Las Vegas 47.4°C (2024-07-07), Seattle 37.9°C (2021-06-28). Record low: Las Vegas -6.9°C (2008-12-19), Seattle -14.5°C (1996-01-30).
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 Las Vegas (36.17, -115.13) and Seattle (47.63, -122.32).
Which months differ most?
The gap in average highs is widest in June, when Las Vegas runs 30°F / 17°C warmer, and narrowest in December (12°F / 6°C apart). The biggest rainfall difference is in November: Seattle gets 7.0 in (179 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 Las Vegas climate and Seattle climate pages.
Compare Las Vegas or Seattle with another city
Questions people ask
Is Las Vegas warmer than Seattle?
Las Vegas is warmer on average: its mean annual temperature is 68°F (20°C) against 52°F (11°C) in Seattle (ERA5, 1996–2025).
Which gets more rain, Las Vegas or Seattle?
Seattle, with about 50.2 in (1275 mm) of precipitation a year and 154 days with at least 1 mm, compared with 5.2 in (131 mm) and 25 days in Las Vegas.
Which is sunnier, Las Vegas or Seattle?
Las Vegas averages more sunshine: 11.3 h a day against 8.3 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.