Las Vegas Weather in January
United States · Hot Desert climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Las Vegas sees average temperatures ranging from a low of 3.7°C (38.7°F) to a high of 14.2°C (57.6°F), with a mean of 9.0°C (48.2°F). Compared to the annual average of 21.5°C (70.7°F), this month is 12.5°C cooler than the yearly norm. This is the coldest month of the year, with average lows of 3.7°C (38.7°F). Precipitation averages 14.3mm, making it approximately 5.0mm wetter than the monthly average of 9.0mm. The city receives an average of 8.5 hours of sunshine per day during January, with relative humidity averaging 43.9%. Wind speeds reach an average maximum of 17.1 km/h. Snowfall averages 0.3cm during January, which can affect travel plans and outdoor activities. For travelers, this month offers a coldest month of the year experience in Las Vegas, with wetter-than-average conditions compared to the rest of the year.
Las Vegas tricks you with air conditioning. I stepped off the plane in July at 42°C and the terminal was 18°C — the shock is real. Pack layers for the casinos, sunscreen for outside, and accept you'll move between climate zones every 30 minutes. June-August is genuinely dangerous outside; plan pool mornings, indoor afternoons. The sweet spots are March-April and October-November: 22-26°C, perfect for hiking Red Rock. Skip December-February unless you love 12°C days and 4°C nights. Always carry water — desert dehydration sneaks up. And lip balm. Always lip balm.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | 9.6°C (49.3°F) | 9.0°C (48.2°F) | 10.9°C (51.6°F) |
| Rainfall | 7.7mm | 14.3mm | 14.2mm |
| Sunshine | 8.1 hrs | 8.5 hrs | 9.6 hrs |
| Humidity | 38.5% | 43.9% | 34.7% |
| Wind | 14.0 km/h | 17.1 km/h | 21.1 km/h |
| Rainy Days | 3.0 | 5.0 | 4.6 |
| Snowfall | 0.0 cm | 0.3 cm | 0.4 cm |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Las Vegas in January, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Las Vegas in January?
The average temperature in Las Vegas during January ranges from 3.7°C (38.7°F) to 14.2°C (57.6°F), with a mean of 9.0°C (48.2°F).
How much does it rain in Las Vegas in January?
Las Vegas receives an average of 14.3mm of precipitation in January, spread across approximately 5.0 rainy days.
What should I pack for Las Vegas in January?
Based on January weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is January a good time to visit Las Vegas?
January is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Las Vegas
Cities with Similar January Climate (Hot Desert)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 36.17°, -115.14°. Timezone: America/Los_Angeles. Last updated: 2026-07-30.