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Cohasset, California

Community in Butte County, California

Air quality

The air at Cohasset

Index 25, good, led by ozone. Read at 11 PM from its reporting area, Chico (CA), 12 miles off.

25Good
  • Fine particles (PM2.5)11Good-
  • Ozone25Good-
  • Coarse particles (PM10)23Good-

The days ahead

Good each day through Fri Oct 16, led by ozone. Yesterday measured 32, good.

Smoke, the next 43 hours

No smoke near the ground through Sat 5 PM.

FriSat

Precipitation

What has fallen at Cohasset

None in the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Cohasset, the next 43 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over Cohasset, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Cohasset, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.5 miles away.

measured now3 instruments

measured daily2 instruments

Magalia 5.6 NNWCA-BT-38

In a volunteer observer's own ground/3.7 mi away/2,650 ft/118 ft above here

precip, snowfall, snow depth

Rank-

De SablaDESC1

At a cooperative observer's station/6.7 mi away/2,740 ft/208 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Cohasset RAWS, drawn

The nearest instrument reporting now, 3.5 mi from Cohasset, California. From its report of Oct 15, 2026, 10:51 PM local time: 3 of its 5 sheets.

The air

79.0 F with a dew point of 22.0 F, 12 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 12,700 ft up.

Chart of the air at Cohasset RAWS: temperature 79.0 degrees Fahrenheit and dew point 22.0, 12 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 12,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CSTC1FIG. B THE AIR AT COHASSET RAWSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00014,00016,0000 F20 F40 F60 F80 FSATURATES 12,700 FT ABOVE THE STATION, AT 11.1 FTEMPERATURE 79.0 FDEW POINT 22.0 FSPREAD 57.0 FRELATIVE HUMIDITY 12 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 POINTTITLECohasset RAWS, the airSTATION REPORT · DCP CSTC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-CSTC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northeast (56 degrees) at 9 mph, gusting 23 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 27 mph.

Plan of the wind at Cohasset RAWS, north up: blowing from 56 degrees, the northeast, at 9 miles an hour, gusting 23; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CSTC1FIG. C THE WIND AT COHASSET RAWSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 56°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECohasset RAWS, the windSTATION REPORT · DCP CSTC1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-CSTC1-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,699 ft above sea level, 6 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.13 inHg and the temperature at 52.9 F; it reports 79.0 F, 26.1 F warmer than standard.

Section from sea level of where Cohasset RAWS stands in the atmosphere, height to scale: the station 1,699 feet above sea level with 6 per cent of the air below it; the standard atmosphere's pressure there, 28.13 inches of mercury, and temperature, 52.9 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CSTC1FIG. D WHERE COHASSET RAWS STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERECOHASSET RAWS6 PER CENT OF THE AIR BELOW IT1,699 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE28.13 inHgSTANDARD TEMPERATURE HERE52.9 FTEMPERATURE, REPORTED79.0 FTITLECohasset RAWS, the columnSTATION REPORT · DCP CSTC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-CSTC1-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Cohasset RAWS, in 5 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in California

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

Near Cohasset

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

Near Cohasset

River and lake gauges