Heat Advisory in effect tomorrow, then Heat Watch in effect Monday and Tuesday

Significant heat is expected for the Champlain Valley, the Connecticut River Valley, and the St Lawrence Valley in NY. Hot temperatures and high humidity will allow heat index values to reach into the upper 90s tomorrow afternoon. Please follow proper heat safety protocols. Stay hydrated, take breaks in air-conditioned rooms if possible, seek shade often, and check up on relatives and neighbors. Read More >

Current conditions at

Massena, Massena International-Richards Field (KMSS)

Lat: 44.94°NLon: 74.85°WElev: 217ft.

Fog/Mist

55°F

13°C

Humidity 93%
Wind Speed Calm
Barometer 30.03 in (1016.7 mb)
Dewpoint 53°F (12°C)
Visibility 2.50 mi
Last update 21 Jun 3:53 am EDT
Extended Forecast for

3 Miles ENE Pyrites NY

Heat Advisory June 22, 11:00am until June 22, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Mostly sunny, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am.  Mostly cloudy, with a low around 70. South wind 7 to 12 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 31 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms after 4pm.  Cloudy, then gradually becoming mostly sunny, with a high near 87. Heat index values as high as 94. Southwest wind 11 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 7pm.  Partly cloudy, with a low around 72. Southwest wind around 7 mph.

    Low: 72 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 91. Southwest wind 8 to 14 mph.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Southwest wind 8 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 91. West wind around 10 mph.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 65. West wind around 5 mph becoming calm  in the evening.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81. North wind around 7 mph.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the morning.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 70. South wind 7 to 12 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 87. Heat index values as high as 94. Southwest wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 72. Southwest wind around 7 mph.
Monday
Sunny and hot, with a high near 91. Southwest wind 8 to 14 mph.
Monday Night
Mostly clear, with a low around 74. Southwest wind 8 to 10 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 91. West wind around 10 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 81. North wind around 7 mph.
Wednesday Night
A 40 percent chance of showers after 8pm. Mostly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 77. North wind 5 to 7 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 64. Northeast wind around 6 mph becoming southeast after midnight. Chance of precipitation is 60%.
Friday
Showers likely. Mostly cloudy, with a high near 77. Southeast wind around 8 mph. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Pyrites NY
 44.5°N 75.11°W (Elev. 600 ft)
3:03 am EDT Jun 21, 2025
4am EDT Jun 21, 2025-6pm EDT Jun 27, 2025
 
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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