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Next 5 Days
  • Today

    Sep 19

    Fog in the morning; sunshine 14°Lo 9°
    more
  • Sat

    Sep 20

    Warmer; a shower in the p.m. 23°Lo 16°
    more
  • Sun

    Sep 21

    Rather cloudy, showers around 20°Lo 7°
    more
  • Mon

    Sep 22

    Cooler with periods of sun 15°Lo 9°
    more
  • Tue

    Sep 23

    Mostly cloudy, showers around 18°Lo 7°
Hi 18° RealFeel® 18° Precipitation 60%

Day

N

E

S

W

  • NNW 11 km/h
  • Gusts: 19 km/h

Mostly cloudy with a couple of showers

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 20%
  • Precipitation: 2 mm
  • Rain: 2 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs
Lo 7° RealFeel® 5° Precipitation 0%

Night

N

E

S

W

  • NE 8 km/h
  • Gusts: 14 km/h

Clear

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 mm
  • Rain: 0 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 23

more Historical Weather Data >
  Today Normal Record 9/23/2013
High 18° 19° 31° (1936) 16°
Low 10° -2° (1896)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:06 AM with 12:08 of sunlight, then sets at 7:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:29 AM with 12:21 of moolight, then sets at 6:50 PM

Top Story

Thornhill Weather Report

Cold Snap, Widespread Frost Looms for Northeast

September 19, 2014; 4:07 AM ET

The chilliest air of the season so far will settle over much of the Northeast into Friday and will bring frost to a large area. more >