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Collinsville, Texas

Town in Grayson County, Texas

Air quality

The air at Collinsville

Index 14, good, led by fine particles. Read at 5 AM from its reporting area, Ardmore (OK), 48 miles off.

14Good
  • Fine particles (PM2.5)14Good-

The days ahead

Highest 80, moderate, Mon Oct 19, led by ozone. Yesterday measured 11, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Collinsville

0.55 in in the last 24 hours, 0.81 in over the last 3 days, to Fri 4 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.55in
Last 3 days
0.81in

Visibility

How far you can see at Collinsville, the next 45 hours

Visibility stays 9 miles or more through Sun 1 AM, lowest 10 miles Sat 8 AM.

FriSat

On the radar over Collinsville, TexasReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Collinsville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 6.3 miles away.

measured now3 instruments

measured daily2 instruments

Sadler 0.6 WTX-GA-63

In a volunteer observer's own ground/9.1 mi away/743 ft/1 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Sherman/Denison, drawn

The nearest airport reporting now, 17.2 mi from Collinsville, Texas. From its report of Oct 16, 2026, 5:35 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 6,000 ft, overcast at 9,000 ft; the ceiling is 9,000 ft; visibility 10 mi or more.

Section of the sky over Sherman/Denison, height above the station to scale: a few clouds cloud with its base at 6,000 feet, overcast cloud with its base at 9,000 feet, the ceiling at 9,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GYIFIG. A THE SKY OVER SHERMAN/DENISONSECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION02,5005,0007,50010,00012,50015,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 9,000 FTOVERCAST, 8 EIGHTHS OF THE SKYFEW 6,000 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 9,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESherman/Denison, the skySTATION REPORT · ASOS GYITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-GYI-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014

The air

60.3 F with a dew point of 46.0 F, 59 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,300 ft up; the lowest cloud reported is at 6,000 ft.

Chart of the air at Sherman/Denison: temperature 60.3 degrees Fahrenheit and dew point 46.0, 59 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,300 feet above the station, against the lowest cloud reported at 6,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GYIFIG. B THE AIR AT SHERMAN/DENISONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0008,00030 F40 F50 F60 F70 FSATURATES 3,300 FT ABOVE THE STATION, AT 42.9 FLOWEST CLOUD REPORTED, FEW 6,000 FTTEMPERATURE 60.3 FDEW POINT 46.0 FSPREAD 14.3 FRELATIVE HUMIDITY 59 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLESherman/Denison, the airSTATION REPORT · ASOS GYITYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-GYI-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (360 degrees) at 20 mph, gusting 29 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 33 mph.

Plan of the wind at Sherman/Denison, north up: blowing from 360 degrees, the north, at 20 miles an hour, gusting 29; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GYIFIG. C THE WIND AT SHERMAN/DENISONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 360°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 20 MPH6STRONG BREEZE25GUST, 29 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESherman/Denison, the windSTATION REPORT · ASOS GYITYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-GYI-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Sherman/Denison, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Texas

20 places, each with its own forecast and its own instruments.

Near Collinsville

The nearest places, each with its own forecast and the instruments nearest it.

Near Collinsville

River and lake gauges