Why Car Thermometers Always Seem ‘Inaccurate’ and Show It’s Colder Than it Actually Is

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As the chilling grip of winter tightens, the reliability of car thermometers during these frosty months often comes into question—and for good reason. As warnings of freezing temperatures and icy conditions are issued, morning routines start to include the need to warm the car up before leaving home. Yet many people get into their car just to see a surprisingly low temperature on the thermometer, feeling confused.

Inaccurate Thermometers

During colder days, drivers often notice disparities between their car’s temperature readings and those displayed on their phone’s weather applications. Brian Donegan, a meteorologist at weather.com, offered insight into this difference.

He explained that car thermometers often present higher temperatures than the actual ambient temperature, especially on warm summer days. He pointed out various reasons for this discrepancy, shedding light on why these readings may not align accurately with external weather conditions.

The Reason

Your car’s temperature reading isn’t what it seems. The so-called thermometer on your dashboard isn’t actually a thermometer at all, but a thermistor. Donegan explained that while a mercury thermometer measures temperature through mercury expansion, a thermistor gauges temperature by detecting changes in electrical current due to heat.

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However, the issue doesn’t lie with the thermistor itself; it’s more about its placement. Typically located behind the car’s grill, the thermistor gets exposed to re-radiated heat from the road surface, which can be significantly warmer than the actual air temperature. This discrepancy results in a reading that’s often much higher than the real outdoor temperature. Therefore, relying on more accurate sources like the Met Office app for forecasts might be a safer bet.

Dwayne Johnson Gets a Christmas Makeover From His Two Daughters

Dwayne ‘The Rock’ Johnson recently got a makeover, and can we say it was absolutely perfect! Over the Christmas holiday weekend, the actor’s younger daughters decided to give their dad a truly splendid new look. Like the great father he is, Johnson took it all in great spirits and posted it on his Instagram for the world to see and enjoy!

The Makeup

Dwayne Johnson’s daughters Jasmine, seven, and Tiana, four, both seemed hard at work in this video trying to get their dad ready for Christmas. Johnson is seen wearing a Harley Quinn wig while Jasmine applies some makeup on his face. The Black Adam actor asks the girl why they are pressing the applicator so hard! Tiana comments that her father is looking pretty (and we agree). The Rock also continuously asks for reassurance from his kids on whether he looks cool or not. Lastly, he decides that he needs a tutu!

The Second Video

In a second video, the two girls order the former professional wrestler to stand up so they can put the tutu on him. When it turned out that the tutu could only fit one of Johnson’s thighs, they turned it upside down and put it on his head instead. Dwayne Johnson also adorably posted the video on his socials despite protesting in the clip that he absolutely won’t! He captioned it, stating that it was his first morning back home and his daughters were already insisting on giving ‘Dwanta Claus’ a makeup! He finished it by saying that if he looks as cool as he feels, he’s winning!

The Family

Dwayne Johnson’s love for his family is evident in his posts! The actor shares his two younger daughters with his wife, Lauren Hashian. His elder daughter Simone, 21, whom he shares with ex-wife Dany Garcia, is currently following in her father’s footsteps and has joined the world of wrestling.