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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Fulton, Oswego County Airport (KFZY)

Lat: 43.35°NLon: 76.39°WElev: 476ft.

Fair

54°F

12°C

Humidity 90%
Wind Speed Calm
Barometer 30.18 in (1022.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 29 Aug 1:54 am EDT
Extended Forecast for

Altmar NY

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 76. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54. Light southeast wind.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 76. Light and variable wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Light southwest wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 2pm. Partly sunny, with a high near 78. Light and variable wind. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers after 2am. Mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 40%.

    Low: 59 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Partly sunny, with a high near 79. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 47. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 76. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 54. Light southeast wind.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 76. Light and variable wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Light southwest wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers before 2pm. Partly sunny, with a high near 78. Light and variable wind. Chance of precipitation is 20%.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 40%.
Tuesday
A chance of showers. Partly sunny, with a high near 79. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 50%.
Tuesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Thursday
A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Altmar NY
 43.51°N 76.01°W (Elev. 571 ft)
Last Update:
1:57 am EDT Aug 29, 2026
Forecast Valid:
2am EDT Aug 29, 2026-6pm EDT Sep 4, 2026
 
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