Las Vegas records about 106mm of rain across roughly 26 wet days a year, which is a 7% chance on an average day. January is the wettest month at 13mm (12% of the annual total) and June the driest at 2mm. Local rain type: brief showers. Las Vegas is one of America's driest cities — umbrellas are virtually unnecessary. The rare summer monsoon storm is a spectacle worth watching.
Chance of rain on an average day: 7%
Rainfall climatology for Las Vegas. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 106mm |
| Rain days per year | 26 |
| Odds on an average day | 7% |
| Wettest month | January — 13mm over 3 days |
| Driest month | June — 2mm over 1 days |
| Rain type | brief showers |
| Best dry window | Virtually any month offers dry weather, but October through May has near-zero rain risk. |
| Worst rain window | July and August bring rare but spectacular monsoon thunderstorms with dramatic desert lightning. |
January delivers 550% more rain than June (13mm vs 2mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 12% of the annual total, so rain in Las Vegas is spread through the year — there is no season you can rely on being dry.
Las Vegas rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 3 days in January against 1 in June — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 13mm | 3 | 10% | 14°C |
| February | 11mm | 3 | 10% | 14°C |
| March | 9mm | 2 | 7% | 18°C |
| April | 5mm | 1 | 3% | 24°C |
| May | 3mm | 1 | 3% | 31°C |
| June | 2mm | 1 | 3% | 37°C |
| July | 11mm | 3 | 10% | 41°C |
| August | 11mm | 3 | 10% | 41°C |
| September | 8mm | 2 | 7% | 37°C |
| October | 8mm | 2 | 7% | 31°C |
| November | 6mm | 2 | 7% | 24°C |
| December | 10mm | 3 | 10% | 18°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Las Vegas we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Las Vegas records rain on roughly 26 days a year — about a 7% chance on any given day — totalling around 106mm.
January, with about 13mm over 3 rain days. That is 12% of the entire year's rainfall in a single month.
June is the driest month at 2mm across roughly 1 days. Virtually any month offers dry weather, but October through May has near-zero rain risk.
Las Vegas is one of America's driest cities — umbrellas are virtually unnecessary. The rare summer monsoon storm is a spectacle worth watching.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.