National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Niagara Falls, Niagara Falls International Airport (KIAG)

Lat: 43.11°NLon: 78.94°WElev: 587ft.

Fair

18°F

-8°C

Humidity 59%
Wind Speed N 15 mph
Barometer 30.29 in (1027.5 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 8 Dec 2:53 am EST
Extended Forecast for

Olcott NY

  • Overnight

    Overnight: Mostly clear, with a low around 15. North wind around 14 mph.

    Low: 15 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 24. North wind 5 to 8 mph becoming south in the afternoon.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. South wind 5 to 8 mph.

    Low: 11 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 37. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain and snow showers before 10pm, then snow showers. Low around 29. Southwest wind 11 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 29 °F

    Chance
    Rain/Snow
    then Snow

  • Wednesday

    Wednesday: Rain before 1pm, then rain, possibly mixed with snow. High near 41. Breezy, with a south wind 15 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 41 °F

    Breezy. Rain
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 23. Northwest wind 13 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    Low: 23 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of snow showers. Mostly cloudy, with a high near 32. West wind 11 to 14 mph. Chance of precipitation is 40%.

    High: 32 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A chance of snow showers. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.

    Low: 21 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 15. North wind around 14 mph.
Monday
Mostly sunny, with a high near 24. North wind 5 to 8 mph becoming south in the afternoon.
Monday Night
Partly cloudy, with a low around 11. South wind 5 to 8 mph.
Tuesday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 37. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Tuesday Night
A chance of rain and snow showers before 10pm, then snow showers. Low around 29. Southwest wind 11 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain before 1pm, then rain, possibly mixed with snow. High near 41. Breezy, with a south wind 15 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 23. Northwest wind 13 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 32. West wind 11 to 14 mph. Chance of precipitation is 40%.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.
Friday
A chance of snow showers. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.
Friday Night
Snow showers likely. Mostly cloudy, with a low around 18. Chance of precipitation is 60%.
Saturday
Snow showers likely. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 16. Chance of precipitation is 50%.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 27. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Olcott NY
 43.33°N 78.71°W (Elev. 299 ft)
Last Update:
12:36 am EST Dec 8, 2025
Forecast Valid:
3am EST Dec 8, 2025-6pm EST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation