Dangerous, Heat Wave Persists in the Eastern U.S.; Severe Weather Expected in the Central Plains and Mid-Atlantic

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorms are expected to produce damaging wind gusts from the Upper Ohio Valley into the Mid Atlantic, and across the central Great Plains this afternoon and evening. Large hail and heavy rain is also possible across the Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Fair

68°F

20°C

Humidity	96%
Wind Speed	SW 5 mph
Barometer	29.98 in (1014.0 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Last update	4 Jul 3:56 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Sparrow Bush NY

Heat Advisory until July 4, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until July 4, 09:00pm
NOW until 9:00pm Sat
Heat Advisory
Overnight
Low: 67 °F
Mostly Clear
Independence Day
High: 93 °F
Mostly Sunny
then Showers
Likely
Saturday Night
Low: 64 °F
Showers
Likely
Sunday
High: 82 °F
Showers
Likely
Sunday Night
Low: 60 °F
Showers
Likely
Monday
High: 73 °F
Showers
Likely
Monday Night
Low: 57 °F
Showers
Likely
Tuesday
High: 77 °F
Chance
Showers then
Chance
T-storms

Detailed Forecast

Overnight

Mostly clear, with a low around 67. Calm wind.

Independence Day

A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 93. Heat index values as high as 99. West wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm, then a chance of showers after 11pm. Mostly cloudy, with a low around 64. Light northwest wind. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Sunday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Light east wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Light east wind. Chance of precipitation is 70%. New precipitation amounts between three quarters and one inch possible.

Monday

Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Monday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.

Tuesday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.

Wednesday

Partly sunny, with a high near 83.

Wednesday Night

Partly cloudy, with a low around 63.

Thursday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

Thursday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

Friday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 60%.