Denison Heat: 99F Highs and Dry Air Expected - Sep 18, 2 PM
Denison weather, updated every four hours — local forecasts you can trust.
Denison is experiencing very hot conditions with a current feels-like temperature of 97F. Today's high will reach 99F with no rain expected. Stay hydrated.
Briar Iverson
September 18, 2026/1 min read
National Weather Service radar for North Texas (KFWS)
*As of Sep 18, 2 PM local time.*
Current Heat Conditions
Denison is currently dealing with intense heat this afternoon. The air temperature sits at 95F, but the feels-like temperature has reached 97F. Relative humidity is currently at 37%, and the dew point is 64F.
Winds are blowing at 10 mph with gusts to 7 mph, and the sky remains mostly clear. This dry heat is a significant factor in the current comfort levels across the city.
Today and Tonight Outlook
The day will remain sunny with a high near 99F. There is a 0% chance of precipitation, meaning residents should not expect any relief from rain. As evening approaches, temperatures will drop to a low near 76F.
The sky will be mostly clear tonight, and winds will shift to a south direction around 5 mph. Heat index values may reach as high as 98F during the evening hours, keeping the air feeling warm well into the night.
Tomorrow's Forecast
Tomorrow will mirror today’s conditions with another sunny day. The high is expected to be near 99F, with temperatures potentially falling to around 97F in the afternoon. The chance of precipitation remains at 0%, ensuring dry conditions continue.
Winds will be from the south southwest at 5 to 10 mph. Tonight, the low will be around 77F, with temperatures rising to around 79F overnight. There are no active weather alerts in effect for the area.
Given the sustained high temperatures and low humidity, it is important to stay hydrated and limit strenuous outdoor activities during the hottest parts of the day. Check on neighbors who may be sensitive to the heat, and ensure pets have access to shade and water.
National Weather Service radar for North Texas (KFWS)
Denison is experiencing very hot conditions this afternoon. Current temperatures are 93F, feeling like 98F, with a high near 99F expected today. A slight chance of showers exists, but sunny skies dominate.
A Heat Advisory is active for Denison as air temperatures reach 97F and heat index values climb toward 102F. Residents should stay hydrated and limit midday exertion.
