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Hot weather continues for the Pacific Northwest and Great Basin; monsoonal moisture establishing over the Southwest

Across the western U.S., excessive heat will continue with widespread 100-plus degree temperatures for the lower elevations of Washington, Oregon, Idaho, Nevada, and California through midweek. Across the Desert Southwest, normal hot temperatures will be present through the week. Increasing moisture from the monsoon will make it feel more humid as well as aid in thunderstorm development.
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Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Partly Cloudy

66°F

19°C

Humidity 93%
Wind Speed S 5 mph
Barometer 29.96 in (1014.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 30 Jun 5:56 am EDT
Extended Forecast for

Islip NYSimilar City Names

  • Today

    Mostly Sunny

    Mostly
    Sunny

    High: 78 °F

  • Tonight

    Chance Thunderstorms Chance for Measurable Precipitation 50%

    Chance
    Thunderstorms

    Low: 65 °F

  • Wednesday

    Showers Likely Chance for Measurable Precipitation 70%

    Showers
    Likely

    High: 78 °F

  • Wednesday
    Night

    Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

    Slight Chc
    Thunderstorms

    Low: 66 °F

  • Thursday

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    High: 79 °F

  • Thursday
    Night

    Mostly Cloudy

    Mostly
    Cloudy

    Low: 64 °F

  • Friday

    Partly Sunny

    Partly
    Sunny

    High: 77 °F

  • Friday
    Night

    Mostly Cloudy

    Mostly
    Cloudy

    Low: 65 °F

  • Independence
    Day

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    High: 78 °F

Detailed Forecast

Today
Mostly sunny, with a high near 78. Light southwest wind becoming south 10 to 15 mph in the morning.
Tonight
A chance of showers between midnight and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 65. Southeast wind around 9 mph. Chance of precipitation is 50%.
Wednesday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 78. Southwest wind 7 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 66. Southwest wind 5 to 9 mph becoming light west after midnight. Chance of precipitation is 20%.
Thursday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 79. Light and variable wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 64.
Friday
Partly sunny, with a high near 77.
Friday Night
Mostly cloudy, with a low around 65.
Independence Day
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 79.
  Click Map For Forecast
Point Forecast:
Islip NYSimilar City Names
 40.73°N 73.22°W (Elev. 7 ft)
3:25 am EDT Jun 30, 2015
7am EDT Jun 30, 2015-6pm EDT Jul 6, 2015
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database