Texas · NWS FWD office

Denison, TX weather

It is 64°F and clear at Sherman/Denison, Grayson County Airport as of Oct 28, 3:55 AM CDT. Overnight: Clear, low near 60°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 1:26 AM CDT.

Updated Oct 28, 4:27 AM CDT (snapshot)

Current conditions

Temperature

64°F

Clear

Wind

SSE 11 mph

Humidity 72% · dew point 55°F

Pressure · visibility

30.14 inHg

Visibility 10 mi

Observed at Sherman/Denison, Grayson County Airport (KGYI), Oct 28, 3:55 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Denison forecast zone right now.

Around the NWS FWD forecast area

No active alerts in zones served by the FWD office near Denison.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. Texas has 2 active alerts: see them all.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Denison (local time)
TimeTempForecastPrecip. chanceWind
Wed 6 AM62°FSunny1%S 5 mph
Wed 7 AM61°FSunny2%S 5 mph
Wed 8 AM61°FSunny2%SSE 5 mph
Wed 9 AM63°FSunny2%S 5 mph
Wed 10 AM69°FSunny2%S 5 mph
Wed 11 AM74°FSunny2%S 10 mph
Wed 12 PM77°FSunny2%S 10 mph
Wed 1 PM80°FSunny0%S 10 mph
Wed 2 PM80°FSunny0%S 10 mph
Wed 3 PM81°FSunny0%S 10 mph
Wed 4 PM81°FSunny4%S 10 mph
Wed 5 PM81°FSunny4%S 10 mph
Wed 6 PM81°FMostly Clear4%S 5 mph
Wed 7 PM77°FMostly Clear0%S 5 mph
Wed 8 PM75°FMostly Clear0%SSE 5 mph
Wed 9 PM72°FMostly Clear0%SSE 5 mph
Wed 10 PM71°FMostly Clear0%SSE 5 mph
Wed 11 PM69°FMostly Clear0%SSE 5 mph
Thu 12 AM68°FMostly Clear0%S 5 mph
Thu 1 AM68°FMostly Clear0%S 5 mph
Thu 2 AM68°FMostly Clear0%S 5 mph
Thu 3 AM67°FMostly Clear0%S 5 mph
Thu 4 AM66°FMostly Clear0%S 5 mph
Thu 5 AM66°FPartly Cloudy0%S 5 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Denison can differ.

7-day forecast

Overnight

Low 60°F

Clear. Low around 60, with temperatures rising to around 62 overnight. South wind around 5 mph.

Wednesday

High 82°F·Low 65°F

Mostly sunny, with a high near 82. South wind 5 to 10 mph.

Wednesday Night: Mostly cloudy, with a low around 65. South wind 5 to 10 mph.

Thursday

High 83°F·Low 64°F

Partly sunny. High near 83, with temperatures falling to around 81 in the afternoon. South wind around 5 mph.

Thursday Night: Cloudy. Low around 64, with temperatures rising to around 66 overnight. Southeast wind 0 to 5 mph.

Friday

High 75°F·Low 59°F

A slight chance of rain showers between 7am and 1pm. Cloudy. High near 75, with temperatures falling to around 72 in the afternoon. East wind around 5 mph. Chance of precipitation is 20%.

Friday Night: A chance of rain showers after 7pm. Cloudy, with a low around 59. East southeast wind around 5 mph. Chance of precipitation is 50%.

Saturday

High 74°F·Low 59°F

A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 74. South southeast wind around 5 mph. Chance of precipitation is 50%.

Saturday Night: A chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 59. East wind 0 to 5 mph. Chance of precipitation is 50%.

Sunday

High 78°F·Low 61°F

Mostly sunny, with a high near 78.

Sunday Night: A chance of rain showers. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.

Monday

High 79°F·Low 58°F

A chance of rain showers before noon, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.

Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.

Tuesday

High 73°F

A chance of rain showers. Partly sunny, with a high near 73. Chance of precipitation is 30%.

Nearby cities

Larger cities in the area

Other cities in Grayson County

See every city we cover in Texas, or check all active alerts.

About this forecast

Forecast office
Denison is served by the National Weather Service FWD forecast office, forecast zone TXZ093, county zone TXC181.
Location used
The Census Bureau's internal point for Denison (33.7669, -96.5807), in Grayson County. Population: 26,446 (2024 estimate), number 122 of the 154 Texas cities on this site.
Radar
Nearest NWS radar: KFWS. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/33.7669,-96.5807 (forecast issued Oct 28, 1:26 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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