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5-day forecast / Denison, TX

SaturdaySunny94° / 72° 2%
SundaySlight Chance Showers And Thunderstorms93° / 73° 22%
MondayChance Rain Showers94° / 75° 30%
TuesdayPartly Sunny95° / 75° 5%
WednesdayChance Showers And Thunderstorms88° / 72° 57%

Denison Heat Index Hits 105 Today as Temperatures Climb Near 101 - Aug 12, 11 AM

Denison weather, updated every four hours — local forecasts you can trust.

Denison faces intense heat today with highs near 101F and heat index values reaching 105F. Current conditions show a feels-like temperature of 94F with clear skies.

Briar Iverson

August 12, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Aug 12, 11 AM local time.*

Intense Heat and Humidity in Denison

Denison is currently experiencing very hot conditions this morning, with the air temperature at 88F and a feels-like temperature of 94F. The atmosphere is quite humid, with a dew point of 72F and relative humidity at 59%. Winds are blowing from the south at 17 mph, with gusts reaching 21 mph, while the sky remains clear.

Today will be exceptionally hot, with a high near 101F. The National Weather Service indicates heat index values as high as 105F. Expect sunny skies throughout the day, with south winds between 10 to 15 mph.

There is a 0% chance of precipitation. Temperatures will drop to a low near 80F tonight. Conditions will remain clear overnight, with temperatures rising to around 82F.

Heat index values will reach as high as 102F. South winds will persist around 10 mph, with gusts up to 20 mph.

Tomorrow continues the hot trend with a high near 101F and sunny skies. Heat index values are forecast to be as high as 101F. South southwest winds will blow between 10 to 15 mph, with gusts as high as 25 mph.

The low tomorrow night will be near 79F, with temperatures rising to around 81F overnight. Heat index values will remain high at 101F, with south winds of 10 to 15 mph. There is no chance of rain for tomorrow as well.

Safety and Conditions

There are no active National Weather Service or NOAA weather alerts in effect for Denison at this time. However, the extreme heat requires caution. Residents should hydrate frequently and limit midday exertion to avoid heat-related illnesses.

The combination of high temperatures and humidity creates dangerous heat index values, so staying in air-conditioned environments during the peak heat hours is strongly advised. Check on neighbors and vulnerable individuals to ensure they are safe from the heat. While winds are moderate, the primary concern remains the intense thermal load on the body.

Plan outdoor activities for the early morning or late evening when temperatures are lower. Monitor local forecasts for any changes, but currently, the outlook remains consistently hot and dry through tomorrow.

National Weather Service radar for North Texas (KFWS)

Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data

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Briar Iverson

Briar Iverson covers weather, storms, and seasonal life around Denison.

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