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July 24 to July 30: This week in Denver weather history

Wednesday, July 27th, 2022 4:59am MST

This Week in Denver Weather History

As we near the end of July the weather in Denver tends to be a bit more stable. That doesn’t mean the severe weather threat disappears as can be seen at our look back at this week in Denver weather history. Particularly notable are lightning injuries and deaths, flash flood events and even tornadoes.

From the National Weather Service:

7-25

In 1934…a streak of 15 consecutive days of 90 degrees ranked 5th on the list of hot streaks. The record of 24 consecutive days was established in the summer of 2008.

13-5

In 2008…a streak of 24 consecutive days of 90 degrees shattered the previous record of 18 consecutive days established in 1901 and 1874. Ironically…no new single day record high temperatures were set in the month of July. In August however…a record of 104 degrees was set on the 1st…and another record of 103 degrees was set on the 2nd. In addition…a record low min of 70 degrees was set on August 2nd.

18-2

In 1987…a streak of 16 consecutive days of 90 degrees ranked 4th on the list of hot streaks. The record of 24 consecutive days was established in the summer of 2008.

20-25

In 1965…heavy showers and thunderstorms doused metro Denver with significant rain each day. Rainfall for the six days totaled 5.16 inches at Stapleton International Airport. Massive rainfall occurred on the 20th…21st…and 25th… Flooding streets and basements and causing streams to overflow. The heaviest rainfall…2.05 inches…at Stapleton International Airport occurred on the 25th.

24

In 1896…heavy cloudbursts in the foothills west of Denver caused flash flooding on Bear Creek…Clear Creek…Golden Gate Gulch…and Mount Vernon Creek…resulting in a total of 27 deaths. The downpour dislodged large Boulders…one of which crushed a house. The heavy rain also caused a dam on cub creek to wash out…adding even more water to the flood. A wall of water as high as 10 feet flooded Evergreen and passed down bear creek…washing away many structures along the way. The flood crest produced 3 feet of water in downtown Morrison during the early evening. Flash flooding on Mount Vernon Creek added to the flooding in Morrison. In Golden…the flooding washed out bridges on clear creek and on Cresman and Tucker gulches and forced the closure of the power plant. In Denver…a thunderstorm produced hail of unknown size during the afternoon and rainfall of 1.23 inches overnight.

In 1958…a thunderstorm wind gust to 52 mph was recorded at Stapleton Airport.

In 1965…heavy rain caused flooding on clear creek and tucker gulch in Golden and west Denver. Damage in Golden was estimated at 80 thousand dollars. Heavy rain south of Denver washed out temporary earthen bridges constructed following the June floods in Castle Rock…Littleton… Englewood…and Denver. Bear creek in south Denver reached flood stage. A cloudburst on cub creek in Evergreen washed out bridges and roads. Heavy rain fell over all the Denver and Aurora areas…causing some flooding of roads…streets… And bridges. A man drowned in a flooded irrigation canal near Hudson. Heavy rain caused flooding of streets and roads in Blackhawk and central city. Hail caused minor damage in Idaho Springs.

In 1967…seven bridges were washed out along a normally dry creek bed south of State Highway 7 west of Brighton. One car was washed into the creek when a bridge gave way.

In 1970…hail stones to 1 1/4 inches in diameter fell in the foothills of Jefferson County southwest of Denver.

In 1971…golf ball size hail was reported in foothill areas of Jefferson County west of Denver. A funnel cloud was sighted in Aurora. Wind gusts estimated at 60 mph…hail… And heavy rain up to an inch in 15 minutes caused local flooding and some other damage in several areas of metro Denver. Hailstones to 3/4 inch in diameter fell 7 miles southeast of Denver.

In 1973…a thunderstorm wind gust to 52 mph was recorded at Stapleton International Airport where one inch diameter hail was measured.

In 1981…strong winds downed a power line in northeast Denver. Wind gusts to 50 mph were recorded at Chatfield Reservoir.

In 1987…3/4 inch diameter hail fell 5 miles northeast of Commerce City.

In 1996…hail…up to 1 3/4 inches in diameter…fell at Chatfield Reservoir. Hail to 3/4 inch in diameter was measured near Bennett.

In 2000…lightning struck near two golfers at ute creek golf course near Longmont…knocking them to the ground. The men received only minor injuries.

In 2001…lightning from a thunderstorm knocked out electrical power to about 1500 residents in the city of Denver.

In 2004…a chilly day with fog and thunderstorms resulted in two temperature records. The low temperature of 49 degrees was a record minimum for the date. The high temperature of only 58 degrees was a record low maximum for the date.

In 2016…severe thunderstorms produced damaging straight-line. A storm leveled a greenhouse and caused tree damage near Byers. A peak wind gust to 74 mph was measured at Denver International Airport.

In 2018…thunderstorms produced very heavy rainfall…1 to 2 inches in less than 30 minutes. In Englewood…the floodwaters quickly inundated a basement apartment and trapped a woman inside. She was found unresponsive in the apartment and died several hours later. Several homes in the immediate area suffered severe flood damage. The floodwaters also stalled vehicles and forced the closure of several intersections. In Sheridan…the heavy rain created a large sinkhole which swallowed a small SUV. A downed power line caused a fire in Arapahoe County.

24-25 » Click here to read the rest of July 24 to July 30: This week in Denver weather history

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Wednesday continues with the warm temps, brings another decent chance for rain

Wednesday, July 27th, 2022 4:59am MST

Well, finally! The last few days have seen us finally receive some rainfall, capped off by yesterday’s three storm cells that combined for nearly an inch of rain. Today, we see temps right near normal and another good chance for storms, albeit probably a bit later in the day than yesterday.

The day starts out with sunny skies and then this afternoon cloud cover will build. We will see highs right around the average for the date of 90 degrees.

The afternoon brings slight chances for storms but today it will take a while for things to develop. Best opportunity will come starting at about 6:00pm and lasting until after dark. Like yesterday, strong winds, brief, heavy rain and some hail will be the threats.

Tonight, some storms may linger throughout. Skies will be partly clear and lows will dip to the low 60s.

Use our Severe Weather Briefing Page as your one-stop-shop for today’s storms.

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Tuesday in Thornton to offer near normal temps, typical chance for thunderstorms

Tuesday, July 26th, 2022 4:59am MST

A largely average day for us for this time of year. We will see temperatures near the average for the date and the afternoon and evening bring a chance for a thunderstorm.

Mostly sunny skies start us off and will be with us through the morning. The afternoon brings a few more clouds. Highs will top out in the upper 80s. Scattered thunderstorms look to move off the foothills in the early to mid-afternoon and last into the evening.

Tonight, skies will clear late, overnight lows will be in the low-60s.

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Drier air arrives Monday, temperatures climb back to near normal

Monday, July 25th, 2022 4:58am MST

After a couple of damp days and one day with very pleasant, cool temps, we return to more typical mercury readings today. Moisture decreases as well and we should remain dry.

The day starts off with some areas of fog and partly clear skies. As the morning progresses, cloud cover will decrease. High temperatures today will top out right near the average for the date of 90 degrees. Overall conditions will be calm and dry other than some breezy late afternoon and evening winds.

Tonight, lows will be in the low to mid-60s under partly clear skies.

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Thornton’s weekend starts out hot, will end with some relief from the heat

Friday, July 22nd, 2022 4:52am MST

There are some signs of a bit of a break from the hot weather on the horizon. However, we are going to endure two more very hot days first.

For today, highs are going to push to close to the 100-degree mark under sunny skies. A Heat Advisory will be in effect from 10:00am to 8:00pm so please be very careful. This afternoon we have just the slightest chance for a thunderstorm. Tonight, skies will be partly cloudy with lows in the mid-60s.

Saturday continues with the heat. Highs will be in the upper 90s once again. However, we do stand a chance to see some afternoon and evening thunderstorms to cool things down later in the day. Saturday night, storms will end by midnight then partly cloudy skies will be above. Overnight lows will be in the mid-60s.

Sunday finally sees us get a bit of a break. Partly sunny skies will be above with highs “only” in the mid to upper 80s. The afternoon and evening will again bring a decent chance for thunderstorms.

Have a great weekend and stay cool!

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Thursday in Thornton continues the heat, minimal chances for storms

Thursday, July 21st, 2022 4:52am MST

We once again will see mercury readings well above normal today. Precipitation will be elusive and not likely.

Sunny skies start us off and will be with us through the morning. A few clouds will develop in the afternoon but nothing too intrusive. High temperatures will climb to the mid-90s once again. The late afternoon may see an isolated thunderstorm but any that do develop will likely be high-based with primarily wind.

Tonight, skies will be clear and overnight lows will dip to the mid-60s.

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Thornton to see a slight cool down Wednesday, bit better chance for storms

Wednesday, July 20th, 2022 4:55am MST

Certainly this would not be called a real break from the heat but we will see it cool slightly today. There will also be a better chance for thunderstorms but most action will again be west and east of us.

Mostly sunny skies start us off then, as is typical, cloud cover will increase in the afternoon. High temperatures will top out in the mid-90s so we should avoid hitting the 100 degree mark. The afternoon brings some chances for storms with the best opportunity coming from about 3:00pm to 6:00pm.

Tonight, storms will wind down and end by midnight. Skies will then clear and overnight lows dip to the low to mid-60s.

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Tuesday continues the heat, offers only a very slight chance for a storm

Tuesday, July 19th, 2022 4:50am MST

Today’s forecast is likely one that could be copy and pasted through the balance of the week. We will see temperatures well above normal with only a bit of a chance for a storm.

Mostly sunny skies will be above this morning then some increasing cloud cover in the afternoon. High temperatures will top out in the mid to upper 90s. The afternoon will see some isolated thunderstorm activity but it is not expected to be widespread or amount to much.

Tonight, any chance for storms will end by midnight. Skies will then begin to clear and lows will dip to the mid-60s.

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Denver sets record high temperature for July 18

Monday, July 18th, 2022 5:09pm MST

Record High Temperature

It was almost a certainty and indeed it did happen. The Mile High City broke the high temperature record for July 18.

As measured at Denver International Airport, the city’s high temperature topped out at 100 degrees today. That bests the previous high temperature for the date of 99 degrees set in 2020 and previous years.

Here in Thornton, we matched the Denver high with our own 100 degree top reading.

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Monday starts mild, will be hottest day of the week as the mercury climbs

Monday, July 18th, 2022 5:01am MST

The mild temperatures this morning are an early indication of the heat to come later today. Temperatures will be pushing toward the century mark in what will be a hot one.

Mostly sunny skies start us off and will be with us through the morning. The afternoon will then bring a few more clouds. High temperatures today will top out at around the 100 degree mark. As a result, a Heat Advisory has been issued and caution should be advised if you conduct any sort of outdoor activity.

The afternoon brings a slight chance for a thunderstorm although any that develop will struggle to put anything on the ground. The additional clouds may, however, help keep the temperatures slightly in check depending on the timing of their arrival.

Tonight, any thunderstorm activity should be done by midnight. Skies will then slowly clear and overnight lows will be in the upper 60s.

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