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Crazy heat continues in Las Vegas, could be another record-breaking day

Record-breaking temperatures continue
Posted at 7:15 AM, Aug 13, 2020
and last updated 2020-08-22 10:28:16-04

FRIDAY UPDATE: A forecast of 111° in Las Vegas, if it verifies this afternoon, would be another daily record (the old one is 110° from 2009).

Today could be the 8th consecutive day of highs at or above 110°, which would set a new record for the month of August. The last time we were this hot for this long was 7 consecutive days back in August of 1940.

It's worth noting that Las Vegas has seen stretches above 110° for nine or ten days before, but only in the months of June and July.

Typically, the monsoon kicks in during the month of August and that limits prolonged bouts of dangerous heat.

The good news if you've been missing the summer rain chances is that humidity will climb starting Saturday, and that will set the stage for scattered showers and thundershowers each weekend afternoon, as well as limit highs to 107° each day.

THURSDAY UPDATE: Smaller rain chances will yield another couple days of dangerous heat across Southern Nevada.

The Excessive Heat Warning has been extended through Friday by the National Weather Service, so please continue to limit time outside and stay hydrated.

Las Vegas will see it's 7th consecutive day at or above 110°, and the 14th such day of the summer. For comparison's sake, Phoenix is expecting it's 44th day at or above 110° by the afternoon.

The Excessive Heat Warning has been extended to Friday evening, and we'll get back above 110° on Friday for (hopefully) the last time for a little while as the pattern changes this weekend.

The big ridge of high pressure responsible for this stretch of record mid-August heat will weaken and shift from Nevada to the Four Corners, which delivers increased humidity and cloud cover to Southern Nevada this weekend and should keep high temperatures close to 105°.

That's still a few degrees above average for this time of summer, and the extra moisture in the air won't make it feel comfortable.

We run the risk for scattered showers and thundershowers as the humidity climbs, so the chance in Las Vegas climbs to 30% Sunday, Sunday night, and Monday.

WEDNESDAY UPDATE: Today will be the sixth consecutive day of dangerous heat in Las Vegas and the 48th day in a row of triple-digit heat.

Highs will spike at 114° in North Las Vegas and along the east side of the valley from Nellis Air Force Base through Sunrise Manor and downtown Henderson.

The Excessive Heat Warning has been extended through Friday by the National Weather Service, so please continue to limit time outside and stay hydrated.

The forecast at McCarran (where the official Las Vegas temperature is measured) is 113°, which should easily beat the old daily record of 111° from 1992.

In addition to sizzling afternoons, there's been little overnight and early morning relief. This morning's record warm low temperature is 90° set in 2018, and the thermometer at McCarran will be close to that mark.

For the second day in a row, showers and thundershowers are possible. Storms are expected to fire over the mountains after midday and deliver the threat of gusty outflow winds, lightning, and localized downpours. Most of the storms will be drifting to the west or the northwest, so places like Primm and Pahrump may encounter rain at some point this afternoon, which would cut the heat.

In Las Vegas, we'll watch for stray showers or thundershowers to potentially spill off the higher terrain down into the valley during the early-to-mid afternoon.

The heat may finally relent by the weekend, as the forecast drops close to 105° on account of climbing humidity as moisture from the remnants of Hurricane Genevieve in the Pacific Ocean moves our way. It's a bit early to confidently forecast rain, but showers and thundershowers look possible Sunday into Monday.

TUESDAY UPDATE: Record daily highs will continue to fall across Southern Nevada as our large ridge of high pressure delivers temperatures more than 10° above average.

Las Vegas will see 113° today (the record is 111° from 1992).

Storms popping up this afternoon in Arizona will drift from east to west into places like Laughlin and Primm with the threat of lightning and gusty winds. There's also a chance for thundershowers over the mountains that surround Las Vegas, so we can't rule out a stray shower or storm-related wind gust here in the valley.

Temperatures will hit 113° again on Wednesday before gradually dropping 1° each afternoon on Thursday and Friday.

Nevertheless, daily records will be tied or broken during the next four days.

The Excessive Heat Warning runs through Thursday, so please continue to limit time outside, stay hydrated, and take breaks in the air conditioning.

A sliver of hope arrives this weekend in the form of highs just below 110° - we'll be 109° on both Saturday and Sunday.

It's not much relief, but hopefully a sign of things to come next week. As the ridge of high-pressure shifts to the Four Corners region by Sunday, the southerly flow could deliver more clouds and additional small thundershower chances.

Both of those factors should keep our temperatures below 110° into next week.

The Clark County Department of Environment and Sustainability (DES) has issued a smoke and ozone advisory for Aug. 18 and 19 for elevated levels of smoke and ozone due to the regional wildfires in the southwest U.S.

DES Division of Air Quality officials say smoke is made of small dust particles and other pollutants that can aggravate respiratory diseases and contribute to ground-level ozone formation.

MONDAY UPDATE: Record-shattering heat is expected in Las Vegas for the next several days as a huge ridge of high pressure controls the weather pattern across the western half of the United States.

Las Vegas could hit 114° today. The record high is 111° from 1939 and the average high (taken from 1981 to 2010's observed weather) is 102°. The hottest we've been so far in 2020 is 113°, which happened on July 12, August 15, and August 16.

Tonight's forecast low of 87° could set a warm low-temperature record. The record is 86° from 2018.

Record highs should be tied or set each of the next seven days, which is very impressive.

Today will be the fourth consecutive day at or above 110°, and if the forecast pans out, the total stretch of days at or above 110° could reach 10 days by Sunday.

The old record for consecutive days at or above 110° for August is seven days, set in 1940.

The record for consecutive days at or above 110° for any time of summer is 10 days, which happened in June of 1961. We'll watch that record closely because it's in jeopardy of being tied by Sunday afternoon if the forecast pans out.

SUNDAY UPDATE: Sunday's high temperature is expected to tie the previous record for the day, set in 1939, at 113°.

The Las Vegas area also remains on track to break the 1940 record of a seven-day streak with temperatures 110° or above. Temperatures at that level are expected to last through Friday for an eight-day streak.

A Heat Advisory and Excessive Heat Warning remain in place through Wednesday.

RELATED: NWS Reno issues rare 'fire tornado' warning amid Loyalton Wildfire

SATURDAY UPDATE: The record high temperature for the date of Aug. 15 has been broken. It was 113 degrees officially today for the Las Vegas valley.

The previous record was 111 degrees in 1939, 1994 and 2002. The normal high temperature for this date is 102 degrees.

The Excessive Heat Warning is still in effect until 10 p.m. Wednesday. According to the latest forecast, Southern Nevada is expected to break records for high temperatures Monday through Thursday. Here are the current predictions:

Sunday 113 will tie
Monday 114 will break
Tuesday 114 will break
Wednesday 113 will break
Thursday 111 will break
Friday 110 will tie

For those expecting to escape to the mountains to avoid the heat in the valleys, temperatures in the mountains are expected to be abnormally hot as well. Be sure to take necessary heat precautions. High temperatures of 90- 95 degrees expected for Kyle Canyon; 105-110 degrees expected for Red Rock Canyon Conservation Area.

UPDATE: An Excessive Heat Warning is in effect from 11 a.m. Friday through 10 p.m. Wednesday for Southern Nevada.

The average high temperature this time of year is 102 degrees. Friday’s predicted high temperature is 110.

Temperatures are expected to go up from there. The predicted high for Saturday is 112; 113 for Sunday; and range from 112 to 113 for Monday, Tuesday and Wednesday.

It is also expected to be very dry, with only a 10% thundershower chance in the mountains around Las Vegas starting Saturday.

The warning includes Clark, Nye and Lincoln counties as well as Mohave County in Arizona and southeast California.

A potentially historic stretch of August heat is in the Las Vegas area forecast starting Friday as high temperatures reach 110° and prompt an Excessive Heat Warning.

13 First Alert Weather | Current temperatures, conditions

The Excessive Heat Warning is currently poised to run through Monday, but it will likely be extended through much of next week.

Based on the latest computer model guidance, highs will likely range from 110° to 113° from this Friday, Aug. 14, through next Friday, Aug. 21, which would be an eight-day stretch.

Per the National Weather Service in Las Vegas, the longest stretch of August heat at or above 110° is seven consecutive days, set back in 1940.

RELATED: Keeping cool during Excessive Heat Warning in Las Vegas

The valley has seen six times where 110° was observed for five or six consecutive days in the month of August.

Record high temperatures in Las Vegas are forecast to be tied or broken this Saturday, Aug. 15, through next Friday, Aug. 21.

Additionally, record warm low temperatures will be tied or broken Friday night, Aug. 14, through Tuesday night, Aug. 18, and again on Thursday night, Aug. 20.

During the Excessive Heat Warning, Clark County announced it will offer options of cooling stations and daytime shelters.

Daytime shelters:

The Salvation Army
Location: 35 West Owens Avenue
Phone: 702-701-5369
Hours: 8 a.m. - 4 p.m.
This location is open for adults

The Shade Tree
1 West Owens Avenue
Phone: 702-385-0072
Hours: 11 a.m. - 7 p.m.
This location is open for women and children

Cooling stations:

Courtyard Homeless Resource Center
Location: 1401 Las Vegas Blvd. North
Phone: 702-229-6117
Hours: 24 hours daily

Cambridge Recreation Center
Location: 3930 Cambridge Street
Phone: 702-455-7169
Hours: 7 a.m. - 6 p.m. Closed Saturday

Downtown Recreation Center
Location: 105 W. Basic Road in Henderson
Phone: 702-267-4040
Hours: 6 a.m. to 8 p.m. Thursday. 6 a.m. to 6 p.m. Friday. 9 a.m. - 3 p.m. Saturday,

SHARE Village Las Vegas
Location: 50 N. 21st Street
Phone: 702-222-1680
Daily Hours: 8 - 9 a.m., 10 a.m. - 12 p.m.
Hydration only

American Legion Richard Springston Post 60
Location: 1510 Bruce Woodbury Drive in Laughlin
Phone: 702-299-1510
Hours: 8 a.m. - 8 p.m. on days with temps over 112 degrees
An outside cooling area is available for pets that are under the control of the owner on a leash or in a carrier.No pets allowed inside.

The Salvation Army Mesquite
Location: 742 Pioneer Boulevard
Phone: (702) 345-5116
Hours: 8 a.m. - 3 p.m. Thursday. 8 a.m. to 12 p.m. Friday. Closed Saturday

Clark County says the different sites will have precautionary measures such as screening protocol, social distancing, and mask requirements in place in response to COVID-19.