Grant Johnston
Grant Johnston

Meteorologist Grant Johnston joined NBC 5 in April 2010 and can be seen on NBC 5 Today weekdays from 5 a.m. to 7 a.m.

Johnston has held several on-air meteorological positions. For seven years, he forecasted at NBC affiliate KFOR-TV in Oklahoma City, Oklahoma.

“Grant has years of experience forecasting and storm chasing in the heart of Tornado Alley," NBC 5’s David Finfrock said. "He’s bringing great depth of experience to our local team. I’m glad he’s here.”

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Growing up in the Midwest, Grant developed a fascination with thunderstorms, tornadoes, and blizzards at an early age. For a birthday present in high school, his parents took him to meet the local TV meteorologist in Kansas City, Bryan Busby. Six years later, he did an internship with Busby and credited him with his start in the business.

After graduating from the University of Missouri with a degree in Atmospheric Science, Grant began his career in meteorology at KMIZ-TV in Columbia, Missouri. 

He also forecasted for KYTV in Springfield, Missouri. While in college, Grant was recognized for his undergraduate research on hurricanes and El Nino.

Grant left Oklahoma City in 2009 to enroll in the Dallas Theological Seminary and plans to continue working toward a master’s degree there.

When Grant is not on air or doing homework, he enjoys spending time with family and friends, running, flying, and composing music. 

The Latest

  • Forecast 8 hours ago

    NBC 5 FORECAST: Late summer heatwave

    A late summer heatwave is unfolding across North Texas. High temperatures will be well above normal for the next few days with highs in the mid to upper 90s and an afternoon heat index around 100.

  • Forecast Sep 18

    NBC 5 FORECAST: Late summer heat wave

    Above normal temperatures will stick around this week with high temperatures in the mid to upper 90s through Friday. The normal high for DFW this time of year is in the upper 80s. An unusually strong upper level ridge of high pressure is responsible for this hot weather pattern.

  • Forecast Sep 17

    NBC 5 FORECAST: Unseasonably warm this week

    Above-normal temperatures will stick around this week with high temperatures ranging from the low to mid-90s through Friday. The normal high for DFW this time of year is in the upper 80s. An upper-level ridge of high pressure is responsible for this warm weather pattern.

  • Grant Johnston
    Forecast 8 hours ago

    NBC 5 FORECAST: Hot pattern holding strong…for now

    Wonder about the weather forecast for North Texas? Get the forecast for Dallas-Fort Worth from the weather team certified most accurate by WeatheRate.

  • Forecast Sep 13

    NBC 5 FORECAST: Hotter weather ahead

    The big weather story over the next few days will be a return of summer-like heat. High temperatures Friday will be in the low 90s with a good deal of sunshine.

  • Forecast Sep 12

    Summer heat returning to North Texas

    As Francine exits to the northeast, the clouds will clear out and warmer weather will move in on Thursday and Friday. In fact, it’s going to be downright hot for the upcoming weekend with highs near 100! The humidity will remain elevated, leading to a heat index of around 105. The above-normal temperatures will continue into next week.

  • Forecast Sep 11

    NBC 5 FORECAST: Higher humidity with a chance of rain

    Although Hurricane Francine will pass well to the east (making landfall in Louisiana today) it will shovel some tropical moisture in our direction. This will result in a bit more cloud cover and a chance for spotty showers or thunderstorms this afternoon. The humidity will be noticeably higher. Meanwhile, the chance of rain will be higher to the east and...

  • Forecast Sep 10

    NBC 5 FORECAST: Warming up and watching Francine

    A clear sky and light wind will provide for a pleasant Tuesday morning. Lows will fall into the mid to upper-50s around DFW. Dallas and Tarrant counties will witness lows into the upper-50s to lower-60s. An easterly wind and plentiful sunshine will increase highs into the upper-80s to lower-90s.

  • Forecast Sep 9

    NBC 5 FORECAST: Starting the week with nice weather; Watching a tropical system in the Gulf

    Due to a light wind and high-pressure overhead, Monday morning lows will drop into the lower to upper-50s. Over the last three decades, there have only been four years that DFW has seen lows in 50s this early in the season. Expect a sunny and nice Monday afternoon with highs into the mid-80s.

  • Forecast Sep 6

    NBC 5 FORECAST: A Friday cold front will bring pleasant weather for the weekend

    Friday will be warm and humid with highs in the upper 80s to around 90. A cold front will move through North Texas Friday afternoon. There will be a low chance of showers and storms with the front, mainly during the afternoon and evening. Severe weather is not expected, but any storm will produce lightning, brief downpours and gusty winds....

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