Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

52°F

11°C

Humidity 64%
Wind Speed N 5 mph
Barometer 30.01 in (1015.5 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 15 Mar 2:53 am EDT
Extended Forecast for

Maryville TN

  • Overnight

    Overnight: Clear early, then becoming mostly cloudy, with a low around 47. Southwest wind around 5 mph.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 74. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 74 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely before 4am, then showers and possibly a thunderstorm between 4am and 5am, then showers after 5am. Some of the storms could produce heavy rainfall.  Low around 41. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Mostly Cloudy
    then Heavy
    Rain and
    Breezy

  • Monday

    Monday: Rain showers before 2pm, then a chance of rain and snow showers. The rain could be heavy at times.  High near 48. Breezy, with a west wind 15 to 20 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 48 °F

    Heavy Rain
    then
    Rain/Snow
    Likely and
    Breezy

  • Monday Night

    Monday Night: A 30 percent chance of snow showers, mainly before 8pm.  Mostly cloudy, with a low around 24. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 40 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. Northwest wind around 5 mph becoming calm.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear early, then becoming mostly cloudy, with a low around 47. Southwest wind around 5 mph.
Sunday
Mostly cloudy, with a high near 74. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Showers likely before 4am, then showers and possibly a thunderstorm between 4am and 5am, then showers after 5am. Some of the storms could produce heavy rainfall. Low around 41. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Rain showers before 2pm, then a chance of rain and snow showers. The rain could be heavy at times. High near 48. Breezy, with a west wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday Night
A 30 percent chance of snow showers, mainly before 8pm. Mostly cloudy, with a low around 24. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 40. West wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 24. Northwest wind around 5 mph becoming calm.
Wednesday
Partly sunny, with a high near 53.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville TN
 35.76°N 83.96°W (Elev. 994 ft)
2:26 am EDT Mar 15, 2026
3am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
 
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Additional Resources

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Hourly Weather Forecast

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