Above Normal Temperatures, Strong Thunderstorms, Tropical Development Being Monitored

Well above normal temperatures are forecast to shift from the northern Plains through the Northeast U.S. over the long holiday weekend. A few strong to severe thunderstorm will be possible as well along with a potential for excessive rainfall. A tropical or subtropical depression could form off the Southeast U.S. coast over the weekend while drifting northward to northeastward. 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 Thu Jul 3 2025 The water temperature off Buffalo is 72 degrees.

1003 AM EDT Thu Jul 3 2025 The water temperature off Rochester is 55 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

573
FZUS51 KBUF 040803
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
403 AM EDT Fri Jul 4 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.

LEZ020-041500-
Upper Niagara River and Buffalo Harbor-
403 AM EDT Fri Jul 4 2025

.TODAY...Light and variable winds becoming southwest 5 to
10 knots. Sunny.
.TONIGHT...Southwest winds less than 10 knots. Mainly clear in
the evening, then becoming partly cloudy.
.SATURDAY...South winds 10 knots or less becoming southwest.
Mostly sunny.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots becoming south.
Partly cloudy.
.SUNDAY...Southwest winds 5 to 15 knots. Partly cloudy.
.MONDAY...Southwest winds 5 to 10 knots becoming light and
variable. A chance of showers and thunderstorms.
.TUESDAY...Northwest winds less than 10 knots. Partly cloudy.

Winds and waves higher in and near thunderstorms.

The water temperature off Buffalo is 72 degrees.

$$

LOZ030-041500-
Lower Niagara River-
403 AM EDT Fri Jul 4 2025

.TODAY...Light and variable winds. Sunny.
.TONIGHT...South winds less than 10 knots. Mainly clear in the
evening, then becoming partly cloudy.
.SATURDAY...South winds 10 knots or less becoming southwest.
Mostly sunny.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Partly to mostly
cloudy.
.SUNDAY...Southwest winds 5 to 15 knots. Mainly clear, then
becoming partly cloudy.
.MONDAY...Southwest winds 10 knots or less becoming north. A
chance of showers and thunderstorms.
.TUESDAY...Northwest winds less than 10 knots. Partly to mostly
cloudy.

Winds and waves higher in and near thunderstorms.

$$

LEZ040-041-041500-
Buffalo to Ripley along Lake Erie-
403 AM EDT Fri Jul 4 2025

.TODAY...Light and variable winds. Sunny. Waves 1 foot or less.
.TONIGHT...Light and variable winds. Mainly clear in the evening,
then becoming partly cloudy. Waves 1 foot or less.
.SATURDAY...South winds 5 to 10 knots becoming southwest. Mostly
sunny. Waves 1 foot or less.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots becoming south.
Partly cloudy. Waves 1 foot or less.
.SUNDAY...Southwest winds 5 to 15 knots. Mainly clear, then
becoming partly cloudy. Waves 2 feet or less.
.MONDAY...Southwest winds 5 to 10 knots becoming north. A chance
of showers and thunderstorms. Waves 2 feet or less.
.TUESDAY...Northwest winds 10 knots or less becoming southwest.
Partly to mostly cloudy. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ042-041500-
Niagara River to Hamlin Beach along Lake Ontario-
403 AM EDT Fri Jul 4 2025

.TODAY...North winds less than 10 knots becoming west. Sunny.
Waves 1 foot or less.
.TONIGHT...South winds 10 knots or less. Mainly clear in the
evening, then becoming partly cloudy. Waves 1 foot or less.
.SATURDAY...South winds 5 to 10 knots. Mostly sunny. Waves 1 foot
or less.
.SATURDAY NIGHT...South winds 10 to 15 knots becoming southwest.
Partly cloudy. Waves 1 foot or less.
.SUNDAY...Southwest winds 10 to 15 knots. Mainly clear, then
becoming partly cloudy. Waves 1 to 3 feet.
.MONDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers and thunderstorms. Waves 1 to 2 feet.
.TUESDAY...Northwest winds 5 to 10 knots becoming west. Partly to
mostly cloudy. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ043-044-041500-
Hamlin Beach to Mexico Bay along Lake Ontario
including Irondequoit Bay-
403 AM EDT Fri Jul 4 2025

.TODAY...North winds 5 to 10 knots becoming west. Sunny. Waves
2 feet or less.
.TONIGHT...Southwest winds 10 knots or less becoming south.
Mainly clear in the evening, then becoming partly cloudy. Waves
1 foot or less.
.SATURDAY...South winds 5 to 10 knots. Mostly sunny. Waves 1 foot
or less.
.SATURDAY NIGHT...South winds 5 to 10 knots. Partly cloudy. Waves
1 foot or less.
.SUNDAY...Southwest winds 10 to 15 knots. Partly cloudy. Waves
2 feet or less.
.MONDAY...Southwest winds 5 to 10 knots becoming northwest. A
chance of showers and thunderstorms. Waves 1 foot or less.
.TUESDAY...Northwest winds 10 knots or less becoming west. Partly
cloudy. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

The water temperature off Rochester is 55 degrees.

$$

LOZ045-041500-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
403 AM EDT Fri Jul 4 2025

.TODAY...North winds 5 to 10 knots becoming southwest. Sunny.
Waves 1 foot or less.
.TONIGHT...Southwest winds 5 to 10 knots becoming south. Mainly
clear. Waves 1 foot or less.
.SATURDAY...South winds 5 to 10 knots. Partly to mostly sunny.
Waves 1 foot or less.
.SATURDAY NIGHT...South winds 5 to 15 knots. Partly cloudy. Waves
2 feet or less.
.SUNDAY...South winds 10 to 15 knots. A chance of showers Sunday
night. Waves 2 feet or less.
.MONDAY...Southwest winds 5 to 10 knots becoming north. A chance
of showers and thunderstorms. Waves 2 feet or less.
.TUESDAY...Northwest winds 10 knots or less becoming southwest.
Partly cloudy. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

Radar