Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Fog

60°F

16°C

Humidity 100%
Wind Speed Calm
Barometer 30.23 in (1023.4 mb)
Dewpoint 60°F (16°C)
Visibility 0.25 mi
Last update 15 Aug 7:56 am EDT
Extended Forecast for

Mayville NY

  • Today

    Today: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 81. Light and variable wind becoming northeast around 5 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. Southeast wind 5 to 8 mph.

    Low: 65 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then showers likely and possibly a thunderstorm after 11am.  Mostly cloudy, with a high near 80. Southeast wind around 9 mph becoming southwest in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm.  Low around 66. Northwest wind 6 to 8 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers

  • Monday

    Monday: A chance of showers, mainly before 8am.  Partly sunny, with a high near 76. Northwest wind 7 to 9 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 76 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. West wind around 6 mph becoming calm  in the evening.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. South wind 3 to 6 mph.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers.  Partly sunny, with a high near 78. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Light and variable wind becoming northeast around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 65. Southeast wind 5 to 8 mph.
Sunday
A slight chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 80. Southeast wind around 9 mph becoming southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and possibly a thunderstorm. Low around 66. Northwest wind 6 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers, mainly before 8am. Partly sunny, with a high near 76. Northwest wind 7 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly clear, with a low around 58. West wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 58. South wind 3 to 6 mph.
Wednesday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Wednesday Night
Showers likely before 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Thursday
Partly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Mayville NY
 42.24°N 79.51°W (Elev. 1365 ft)
7:57 am EDT Aug 15, 2026
8am EDT Aug 15, 2026-6pm EDT Aug 21, 2026
 
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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