Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

A Few Clouds

67°F

19°C

Humidity	44%
Wind Speed	S 8 mph
Barometer	29.77 in (1008.4 mb)
Dewpoint	44°F (7°C)
Visibility	10.00 mi
Last update	16 Jun 6:56 pm EDT

More Information:

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

Extended Forecast for

6 Miles NNW Grand Valley PA

Tonight
Low: 51 °F
Chance
T-storms then
Showers
Likely
Wednesday
High: 74 °F
Mostly Sunny
Wednesday Night
Low: 58 °F
Showers
Thursday
High: 75 °F
Showers
Likely
Thursday Night
Low: 53 °F
Chance
Showers
Juneteenth
High: 71 °F
Chance
Showers
Friday Night
Low: 51 °F
Partly Cloudy
Saturday
High: 70 °F
Mostly Sunny
Saturday Night
Low: 51 °F
Mostly Clear

Detailed Forecast

Tonight

Showers and thunderstorms likely before 2am, then a chance of showers. Mostly cloudy, with a low around 51. South wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

Mostly sunny, with a high near 74. Southwest wind 6 to 9 mph, with gusts as high as 20 mph.

Wednesday Night

A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10pm. Low around 58. Light south wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday

Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. West wind around 14 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 53. West wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Juneteenth

A chance of showers between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 71. Chance of precipitation is 30%.

Friday Night

Partly cloudy, with a low around 51.

Saturday

Mostly sunny, with a high near 70.

Saturday Night

Mostly clear, with a low around 51.

Sunday

A chance of showers after 2pm. Mostly sunny, with a high near 73. Chance of precipitation is 30%.

Sunday Night

A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.

Monday

A chance of showers and thunderstorms. Partly sunny, with a high near 74. Chance of precipitation is 50%.