Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Lake Erie

The reported Lake Erie water temperature is taken at the Buffalo Water Treatment Plant located on Lake Erie at the entrance to the Niagara River. The reading is taken at a depth of 30 feet. This data is unofficial.

Lake Ontario

The reported Lake Ontario water temperature is taken at the Monroe County Water Treatment Plant near Greece, N.Y. The temperatures is measured at the intake pipes about 1500 feet offshore at a approximate depth of 35 feet. The Lake Ontario temperature occasionally may not be representative of the surface temperature due to upwelling. This process, more common during the summer months, brings colder water from the deeper parts of the lake toward the surface near the temperature sensor. The surface water may be significantly warmer. This data is unofficial.

Latest Lake Temperatures

1003 AM EDT Fri Aug 15 2025 The water temperature off Buffalo is 78 degrees.

1003 AM EDT Fri Aug 15 2025 The water temperature off Rochester is 76 degrees.

Monthly Lake Erie Temperatures
January	February	March	April	May	June	July	August	September	October	November	December

Historical Lake Erie Temperatures (Unofficial Normals and Extremes)

The daily lake temperatures for Lake Erie off Buffalo and for Lake Ontario off Rochester are included in the Nearshore Marine Forecast.

Click the link for previous versions of the Nearshore Marine Forecast.

NearShore Marine Forecast

893
FZUS51 KBUF 160804
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
403 AM EDT Sat Aug 16 2025

For waters within five nautical miles of shore

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

LEZ020-161500-
Upper Niagara River and Buffalo Harbor-
403 AM EDT Sat Aug 16 2025

.TODAY...Light and variable winds becoming southwest 5 to
10 knots. Sunny.
.TONIGHT...Southwest winds less than 10 knots. Partly to mostly
cloudy.
.SUNDAY...Southwest winds 10 knots or less becoming northeast.
Showers likely in the morning, then showers likely with a chance
of thunderstorms in the afternoon.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Partly cloudy.
.MONDAY...East winds 5 to 10 knots. A chance of showers Monday
night.
.TUESDAY...Southeast winds 5 to 10 knots becoming east. Showers
likely with a chance of thunderstorms.
.WEDNESDAY...Northeast winds 10 knots or less. A chance of
showers during the day.

Winds and waves higher in and near thunderstorms.

The water temperature off Buffalo is 78 degrees.

$$

LOZ030-161500-
Lower Niagara River-
403 AM EDT Sat Aug 16 2025

.TODAY...Light and variable winds. Mostly sunny.
.TONIGHT...Southwest winds less than 10 knots. Partly cloudy in
the evening, then becoming mostly cloudy.
.SUNDAY...Southwest winds 10 knots or less becoming northeast.
Showers likely.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Partly cloudy.
.MONDAY...East winds 5 to 10 knots. A chance of showers Monday
night.
.TUESDAY...East winds 5 to 10 knots. Showers likely with a chance
of thunderstorms.
.WEDNESDAY...Northeast winds 5 to 10 knots. A chance of showers
during the day.

Winds and waves higher in and near thunderstorms.

$$

LEZ041-161500-
Dunkirk to Buffalo along Lake Erie-
403 AM EDT Sat Aug 16 2025

.TODAY...Southwest winds 10 knots or less becoming west. Sunny.
Waves 1 foot or less.
.TONIGHT...West winds 10 knots or less becoming south. Partly
cloudy in the evening, then becoming mostly cloudy. Waves 1 foot
or less.
.SUNDAY...Southwest winds 5 to 10 knots becoming north. A chance
of showers in the morning, then showers likely with a chance of
thunderstorms in the afternoon. Waves 1 foot or less.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots becoming east. A
chance of showers in the evening. Waves 2 feet or less.
.MONDAY...East winds 5 to 10 knots becoming southeast. A chance
of showers Monday night. Waves 2 feet or less.
.TUESDAY...Southeast winds 5 to 10 knots. Showers likely with a
chance of thunderstorms. Waves 1 foot or less.
.WEDNESDAY...East winds 5 to 10 knots becoming northeast. Showers
likely during the day. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LEZ040-161500-
Ripley to Dunkirk along Lake Erie-
403 AM EDT Sat Aug 16 2025

.TODAY...Southwest winds 10 knots or less becoming west. Sunny.
Waves 1 foot or less.
.TONIGHT...West winds 10 knots or less becoming southwest. A
chance of showers overnight. Waves 1 foot or less.
.SUNDAY...Southwest winds 5 to 10 knots becoming north. A chance
of showers and thunderstorms in the morning, then showers likely
with a chance of thunderstorms in the afternoon. Waves 1 foot or
less.
.SUNDAY NIGHT...Northeast winds around 10 knots becoming east. A
chance of showers in the evening. Waves 1 to 2 feet.
.MONDAY...East winds 5 to 10 knots becoming southeast. A chance
of showers and thunderstorms Monday night. Waves 2 feet or less.
.TUESDAY...South winds 5 to 10 knots becoming southeast. Showers
likely with a chance of thunderstorms. Waves 1 foot or less.
.WEDNESDAY...East winds 5 to 10 knots becoming northeast. A
chance of showers and thunderstorms. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ042-161500-
Niagara River to Hamlin Beach along Lake Ontario-
403 AM EDT Sat Aug 16 2025

.TODAY...East winds 10 knots or less becoming northeast. Mostly
sunny. Waves 1 foot or less.
.TONIGHT...East winds 5 to 10 knots becoming southwest. Partly
cloudy in the evening, then becoming mostly cloudy. Waves 1 foot
or less.
.SUNDAY...West winds 5 to 10 knots becoming northeast. Showers
likely. Waves 1 foot or less.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots increasing to
15 to 20 knots. Partly to mostly cloudy. Waves 1 to 3 feet
building to 3 to 5 feet. Waves occasionally around 6 feet.
.MONDAY...Northeast winds 15 to 20 knots becoming east 10 to
15 knots. A chance of showers Monday night. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.TUESDAY...East winds 10 to 15 knots. Showers likely with a
chance of thunderstorms. Waves 1 to 2 feet.
.WEDNESDAY...Northeast winds 10 to 15 knots. A chance of showers
during the day. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ043-044-161500-
Hamlin Beach to Mexico Bay along Lake Ontario
including Irondequoit Bay-
403 AM EDT Sat Aug 16 2025

.TODAY...Southeast winds 10 knots or less becoming north. Sunny.
Waves 1 foot or less.
.TONIGHT...Northeast winds 10 knots or less becoming southwest.
Mainly clear in the evening, then becoming partly cloudy. Waves
1 foot or less.
.SUNDAY...Southwest winds 5 to 15 knots becoming northeast.
Showers likely. Waves 2 feet or less.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots increasing to
15 to 20 knots. A chance of showers in the evening. Waves 1 to
3 feet building to 3 to 5 feet. Waves occasionally around 6 feet.
.MONDAY...Northeast winds 15 to 20 knots becoming east 5 to
15 knots. A chance of showers Monday night. Waves 3 to 5 feet
subsiding to 2 feet or less. Waves occasionally around 6 feet.
.TUESDAY...Southeast winds 5 to 15 knots. Showers likely with a
chance of thunderstorms. Waves 2 feet or less.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming northeast.
Showers likely with a chance of thunderstorms during the day,
then a chance of showers and thunderstorms Wednesday night. Waves
2 feet or less.

Winds and waves higher in and near thunderstorms.

The water temperature off Rochester is 76 degrees.

$$

LOZ045-161500-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
403 AM EDT Sat Aug 16 2025

.TODAY...East winds 10 knots or less becoming west. Sunny. Waves
1 foot or less.
.TONIGHT...West winds 10 knots or less becoming south. Mainly
clear in the evening, then becoming partly cloudy. Waves 1 foot
or less.
.SUNDAY...South winds 5 to 15 knots becoming northeast. A chance
of showers. Waves 2 feet or less.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots increasing to
15 to 20 knots. A chance of showers in the evening. Waves 2 feet
or less.
.MONDAY...Northeast winds 5 to 15 knots becoming east. Mainly
clear, then becoming mostly cloudy. Waves 2 feet or less.
.TUESDAY...Southeast winds 5 to 15 knots. A chance of showers
during the day, then showers likely Tuesday night. Waves 2 feet
or less.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming northeast.
Showers likely during the day. Waves 2 feet or less.

$$

Radar