Las Vegas in January: Weather, Crowds and a 4:50 p.m. Sunset

LAS VEGAS · JANUARY · 36.08° N

Las Vegas in January is a daytime city. The airport thermometer averages 58.5°F in the afternoon and 40.5°F before dawn, the sun quits at 4:50 pm, and the desert an hour from the Strip turns walkable in a way it never is in July. Every January trip here runs on that trade: you gain the outdoors and you give back the evening.

The month also arrives dry. Precipitation normals for January total 0.56 inches, and only 1.6 days of the month record a tenth of an inch or more. If you have already booked the city and are now choosing dates, the real question is whether 58.5°F afternoons and 3.3 freezing nights buy you more than February’s warmer, wetter version of the same vacation.

On this page

• Las Vegas weather in JanuaryThe NOAA normals: 58.5°F, 40.5°F, 1.6 wet days
• How warm it gets, and whether you can swimAfternoons, freezing nights and the water question
• Crowds, room taxes and when to bookWhat we can and cannot tell you about January prices
• Things to do in Las Vegas in JanuaryRed Rock Canyon, Valley of Fire, Hoover Dam, Fremont Street
• A two-day January itineraryTwo days built around 10 hours of daylight
• January vs December and FebruaryHow the three months compare, degree by degree
• Is January a good time to visit?Who should book it and who should shift four weeks

One thermometer sets the terms for the whole month: 58.5°F by mid-afternoon, 40.5°F before dawn, and a sunset that lands at 4:50 pm on January 15. The normals below come from that station, and the rest of the trip, from the hike you pick to the hour you eat dinner, bends around them.

Las Vegas weather in January: average highs, lows and rain days

Every figure here comes from one instrument: the NOAA NCEI 1991-2020 monthly normals for station USW00023169, at the airport on the valley floor that many travelers still call McCarran. January there averages a high of 58.5°F, a low of 40.5°F and 0.56 inches of precipitation. The open desert around the city and the Spring Mountains above it both run colder after dark than the Strip does, so read these as valley numbers, not trailhead numbers.

That 0.56 inches does not fall evenly. Only 1.6 days in an average January record a tenth of an inch or more, which works out to roughly one day in nineteen. A four-night January trip has a fair chance of seeing no measurable rain at all, and the wet day, when it comes, usually reads as a gray morning and a wet windshield rather than a lost afternoon.

Eighteen degrees separate the average afternoon from the average night, and that spread is the packing problem. A coat that feels correct at 7 am becomes luggage by 1 pm, so a day pack that swallows it matters more than the coat itself. The Mojave sun is still the Mojave sun: dry January air does nothing to soften midday glare on an exposed trail.

On January 15 the sun rises at 6:49 am and sets at 4:50 pm, for 10 hours and 1 minute of daylight (sunrise-sunset.org, converted to local time). Give the desert the middle of the day and the city the dark half. By 5 pm you are under artificial light, and the air cools fast toward that 40.5°F average once the ridgeline takes the sun.

How warm is Las Vegas in January, and can you swim?

58.5°F and 40.5°F are the two poles of the January day, 18 degrees apart, and the warm end is brief. The air climbs through the morning, holds its best hours in the early afternoon, then loses ground steadily from mid-afternoon on. In practice you get perhaps five usable outdoor hours per day at the top of the range, which is why the itinerary here starts early rather than late.

Morning means real layers: a fleece or jacket for the walk to the rental car, closed shoes, and sunglasses anyway. By 2 pm most visitors are down to one layer in direct sun and putting it back on in shade. As for swimming, our data for January carries no water temperature for Lake Mead or for hotel pools, so no figure is quoted here. With nights at 40.5°F, outdoor swimming is a heated-pool question, and the property’s booking page states whether its pool is heated and open.

The cold end is not theoretical. An average January puts 3.3 nights at or below 32°F at the valley station, enough for frost on a windshield at 7 am and enough to make a rooftop bar an endurance event. Higher ground outside the city runs colder still, so a dawn start at a desert trailhead deserves gloves you would feel silly packing for Nevada.

How busy is Las Vegas in January? Crowds, room taxes and booking

No occupancy series and no monthly room-rate series sit in our data, so you will not read here that January is the year’s cheapest month. What we can point at is the calendar: the first days of January still belong to the New Year holiday, and after that the month is ordinary working weeks with the usual gulf between a Tuesday night and a Saturday night. Pull up the dates on the property’s own calendar and compare the two before anything else.

Without a demand curve to read, a lead time in weeks would be invented, so treat the booking rule as mechanical instead. Lock the flight when the dates are truly fixed, take the refundable room rate when they are not, and check whether a convention or a fight weekend sits on your nights, because that single overlap moves a Las Vegas bill more than the season does.

Two lines will appear on your bill that are not in the headline price: the Clark County room tax and the per-night resort fee. Neither figure is in our source data for this month, so no dollar amount is printed here. Both are disclosed on the property’s own checkout page before you pay, and the number that matters is the total for the stay, not the nightly teaser.

The one upgrade January genuinely repays is the rental car. Red Rock Canyon, Valley of Fire and Hoover Dam all sit outside walking range of the hotels, and with 10 hours of daylight the car is the difference between one desert outing across a long weekend and two. Skip it in July, when the same drives end in a parking lot you do not want to cross on foot.

Things to do in Las Vegas in January: Red Rock Canyon, Valley of Fire and Fremont Street

January opens the hours summer closes. At 58.5°F you can hike at noon, stand on a dam in full sun, and walk the length of the Strip without treating shade as a resource. The same errands in July belong to a narrow dawn window, and the swap of pool time for trail time is the whole argument for a winter trip here.

The named targets sit in three directions. West of the city, the Red Rock Canyon National Conservation Area runs a one-way scenic drive with trailheads strung along it. Northeast, Valley of Fire State Park holds the sandstone that most photographs of this region come from. Southeast, Hoover Dam gives a walk-on-the-structure afternoon. Fees, timed-entry rules and closing hours are set by the managing agencies and change; our January data carries none of them, so confirm each one on the agency’s site before you drive out.

Rock does not have a season, air does, and the gap is what you are buying in January. The same canyon trail that is a heat-risk exercise in midsummer is a fleece-and-water walk at 58.5°F. The hard constraint is the clock, not the thermometer: with sunset at 4:50 pm you want to be back at the trailhead before four, because desert canyons go dim well ahead of the official time.

On free entertainment, we could not verify any January-specific schedule, so none is listed. What costs nothing in any month is the walking: the Strip’s hotel interiors end to end, and the downtown pedestrian blocks after dark. Both are night activities, and at a 40.5°F average low, the jacket you left in the room is the mistake most first-timers make on a January evening.

Las Vegas in January: a two-day itinerary

Day one goes to the desert. Coffee at 7, after a 6:49 am sunrise, and out of the garage by 8:30, which puts you at a Red Rock or Valley of Fire trailhead while the air is climbing rather than at its dawn floor. Hike from 9 to about 1, eat late, and be driving back by 2:30. You will be under city lights by 5, with the whole evening still in front of you.

Day two stays close: a slow morning downtown, the Mob Museum or the Neon Museum for the indoor hours (both publish their own hours and ticket prices, which we do not carry for this month), then daylight outside until four. If your trip catches one of the month’s 1.6 wet days, run this day first and push the desert 24 hours, since 0.56 inches of monthly rain rarely holds two days in a row.

Las Vegas in January vs December and February

All three columns come from the same NOAA station and the same 1991-2020 period. January sits 1.6°F above December by day and 4.4°F below February, with nights following the same order: 39.6°F, 40.5°F, 44.1°F. Rain climbs across the winter, from 0.45 inches and 1.1 wet days in December to 0.80 inches and 2.1 wet days in February. No monthly water temperature exists in this data for any of the three.

Shift four weeks later and you buy 4.4°F of afternoon and 3.6°F of night, paid for with half an inch more rain and an extra wet day. Shift four weeks earlier and December hands back the driest column of the three, along with 1.6°F cooler days and the holiday crush on its final fortnight. January is the quiet middle of that curve, and for a trip built around trails and driving, it is the column with the best dry-day arithmetic.

Is January a good time to visit Las Vegas?

Yes, if your trip has a desert in it. Hikers, drivers, dam-and-canyon travelers and anyone who wants to walk a city without heat management get a near-ideal month at 58.5°F and 1.6 wet days. No, if your mental image of Las Vegas involves a lounger, a pool and a drink at 6 pm: the sun is gone by 4:50 pm and the thermometer is heading for 40.5°F.

If that second description is yours, February is the honest alternative before spring: 62.9°F days and 44.1°F nights, at a cost of 0.80 inches of rain and 2.1 wet days. Push further into spring and the numbers keep improving, which is the argument our month-by-month verdict settles across the full twelve.

Among the three winter months, January is the one that pairs an afternoon within 4.4°F of February with December’s near-empty rain gauge, and that combination is what makes it the desert-driving month.

The last word

Decide the car first and the room second: without it, January’s best asset sits an hour outside your hotel and stays there. One more line from the normals makes the case. Across the 1991-2020 record, the average January logs 0.0 days with an inch of rain or more, so the thing most likely to shorten your desert day is not weather at all, it is a 4:50 pm sunset and a late start. Set the alarm for 7.

Sources & data for this guide

• January normals (58.5°F / 40.5°F, 0.56 in), 1.6 days at 0.10 in, 0.0 days at 1 in, 3.3 nights at or below 32°F · NOAA NCEI monthly normals 1991-2020, station USW00023169, valley-floor airport · checked Sep 15, 2026
• December (56.9°F / 39.6°F, 0.45 in, 1.1 days) and February (62.9°F / 44.1°F, 0.80 in, 2.1 days) · same NOAA NCEI series and station · checked Sep 15, 2026
• Sunrise 6:49 am, sunset 4:50 pm and 10h 01m of daylight on January 15 · sunrise-sunset.org, converted from UTC to local time · checked Sep 15, 2026
• Hotel occupancy, monthly room rates, Clark County room tax and resort-fee amounts · not present in our data for this page, so no figure is quoted · checked Sep 15, 2026
• Water temperatures for Lake Mead and hotel pools · not present in our data for this page; no swimming temperature is claimed · checked Sep 15, 2026
• Fees, hours and seasonal closures at Red Rock Canyon, Valley of Fire, Hoover Dam and the downtown museums are set by their operators and change · confirm each before you drive or book.