Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Canandaigua Airport (KIUA)

Lat: 42.91°NLon: 77.33°WElev: 814ft.

Fair

68°F

20°C

Humidity	83%
Wind Speed	SE 5 mph
Barometer	30.04 in
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	16 Jul 2:35 am EDT

More Information:

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

Extended Forecast for

2 Miles ENE Mendon NY

Heat Advisory July 16, 11:00am until July 16, 08:00pm

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 69 °F
Mostly Clear
Wednesday
High: 89 °F
Sunny then
Chance
T-storms
Wednesday Night
Low: 70 °F
Chance
T-storms
Thursday
High: 88 °F
Showers
Likely
Thursday Night
Low: 61 °F
Chance
T-storms then
Slight Chance
Showers
Friday
High: 75 °F
Mostly Sunny
Friday Night
Low: 56 °F
Mostly Clear
Saturday
High: 82 °F
Mostly Sunny
Saturday Night
Low: 64 °F
Chance
Showers

Detailed Forecast

Overnight

Mostly clear, with a low around 69. Light south wind.

Wednesday

A chance of showers and thunderstorms, mainly after 2pm. Increasing clouds, with a high near 89. Heat index values as high as 97. Southwest wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 88. Heat index values as high as 95. Southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Northwest wind 9 to 14 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

Mostly sunny, with a high near 75. North wind around 7 mph.

Friday Night

Mostly clear, with a low around 56. Calm wind.

Saturday

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

Saturday Night

A chance of showers after 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

Sunday

Partly sunny, with a high near 81.

Sunday Night

Partly cloudy, with a low around 61.