7/12/25: Severe Weather Alert! Thunderstorms and Heat Index 105

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Lightning weather conditions for local forecast

Chance of Showers and Thunderstorms

It’s currently 4:55 AM in Sumner County, TN, with a temperature of 74°F and a forecast of chance showers and thunderstorms. The humidity is at 100%, making it feel quite muggy outside. Winds are calm, contributing to a still atmosphere, and overcast skies prevail, creating a damp feeling in the air.

Weather Changes Coming

As we move through the day, expect the chance of showers and thunderstorms to increase. The high is projected at 96°F, which combined with the humidity, will make temperatures feel warmer and stickier. Although winds are calm now, they may pick up later, affecting the overall comfort level.

Today’s Outlook

Looking ahead to the rest of the day, the chance of showers and thunderstorms will remain. The temperature is expected to rise, peaking at 96°F, while the overnight low will drop to around 73°F. Be prepared for humid conditions and possible rain showers throughout the day, and stay aware of changes in temperature as the evening approaches.

View real-time weather conditions on our interactive radar map

Sumner County, TN
July 12, 2025

74°
H:96°
L:73°

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Wind
5 to 10 mph SW

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Humidity
100%

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Conditions
Chance Showers And Thunderstorms

24-Hour Forecast

Saturday
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96°
|
72°
Chance Showers And Thunderstorms

Sunday
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94°
|
73°
Showers And Thunderstorms Likely

Monday
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94°
|
73°
Chance Showers And Thunderstorms

Tuesday
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95°
|
74°
Patchy Fog then Chance Showers And Thunderstorms

Wednesday
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96°
|
75°
Chance Showers And Thunderstorms

Thursday
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96°
|
74°
Chance Showers And Thunderstorms

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