Denison, Texas Weather
Thunderheads boil and break at dusk. Day 16 of summer. Read this microseason across nine climate regions →
Denison weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Drizzle38%0.03″85°69°—
- MondayJul 6Overcast——95°72°+10°
- TuesdayJul 7Light Drizzle——95°74°0°
- WednesdayJul 8Clear——100°74°+5°
- ThursdayJul 9Overcast——101°78°+1°
- FridayJul 10Partly Cloudy——99°78°-2°
- SaturdayJul 11Overcast14%—98°79°-1°
AQI 51 (Moderate), driven by PM2.5. AQI up 6 over the last 6 hours (gradual rise). PM2.5 at 10.9 µg/m³ (AQI 54) with a 0.82 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8.
- Present
- AQI 34
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 10.9 µg/m³ (AQI 54) with a 0.82 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.82
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
When the stars begin to huddle, the earth will soon become a puddle.
- Moonrise
- 12:07 AM
- Moonset
- 12:45 PM
- In sign
- ♓︎ Pisces
Thunderheads boil and break at dusk
Denison at a glance
- Today vs. normal: 78°F — typical for the season
- Last frost: March 10 (climatological average for this latitude)
- Microseason: Jul 6–10
- Planting window: Sow fall broccoli and cabbage indoors for transplant in 4 weeks.
ZIP codes: 75020, 75021
16-Day Forecast — Denison
- Sun85°69°38%
- Mon95°72°9%
- Tue95°74°8%
- Wed100°74°4%
- Thu101°78°2%
- Fri99°78°5%
- Sat98°79°14%
- Sun96°75°16%
- Mon98°76°13%
- Tue102°80°6%
- Wed100°77°2%
- Thu104°79°7%
- Fri108°81°10%
- Sat100°78°11%
- Sun106°76°16%
- Mon107°74°13%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 6, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Denison
SPC includes Denison in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Denison
- 75020