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

Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Fair

66°F

19°C

Humidity 84%
Wind Speed W 3 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 18 Aug 10:56 pm EDT
Extended Forecast for

5 Miles NE Steamburg NY

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Southwest wind 5 to 7 mph.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 72. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 54. Light northwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    T-storms then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 71. Light and variable wind.

    High: 71 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, sunny, with a high near 75. Light southeast wind.

    High: 75 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. Calm wind becoming southeast around 5 mph after midnight.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 75. South wind around 6 mph. Chance of precipitation is 70%.

    High: 75 °F

    Mostly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. Southwest wind 5 to 7 mph.
Wednesday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 72. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 54. Light northwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 71. Light and variable wind.
Thursday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 50. Calm wind.
Friday
Patchy fog before 9am. Otherwise, sunny, with a high near 75. Light southeast wind.
Friday Night
Partly cloudy, with a low around 55. Calm wind becoming southeast around 5 mph after midnight.
Saturday
Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 75. South wind around 6 mph. Chance of precipitation is 70%.
Saturday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 56. Chance of precipitation is 80%.
Sunday
Showers, with thunderstorms also possible after 2pm. High near 69. Chance of precipitation is 80%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly sunny, with a high near 69. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NE Steamburg NY
 42.18°N 78.84°W (Elev. 2241 ft)
Last Update:
9:57 pm EDT Aug 18, 2026
Forecast Valid:
11pm EDT Aug 18, 2026-6pm EDT Aug 25, 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