Areas of Severe Thunderstorms and Excessive Rainfall; Heat Wave Builds in the Intermountain West and Plains

A slow moving front will bring rounds of strong to severe thunderstorms and heavy rainfall to the central Plains eastward to the east-central U.S.. The first widespread significant heat wave of summer for the Intermountain West and Plains is expected to develop today and expand through next week. Dangerous heat will continue to impact portions of the Southwest and Southeast. 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 Jul 10 2026 The water temperature off Buffalo is 75 degrees.

1003 AM EDT Fri Jul 10 2026 The water temperature off Rochester is 48 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

885
FZUS51 KBUF 101403
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
1003 AM EDT Fri Jul 10 2026

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.

LEZ020-102100-
Upper Niagara River and Buffalo Harbor-
1003 AM EDT Fri Jul 10 2026

.REST OF TODAY...Light and variable winds becoming northeast 5 to
10 knots. A chance of showers this afternoon.
.TONIGHT...Northeast winds less than 10 knots. Partly to mostly
cloudy.
.SATURDAY...Light and variable winds becoming northeast 5 to
10 knots. Sunny.
.SATURDAY NIGHT...Northeast winds less than 10 knots. Mainly
clear.
.SUNDAY...Light and variable winds. Mainly clear.
.MONDAY...Southwest winds 10 knots or less. Mainly clear.
.TUESDAY...Southwest winds 5 to 15 knots becoming west. Mainly
clear, then becoming partly cloudy.

The water temperature off Buffalo is 75 degrees.

$$

LOZ030-102100-
Lower Niagara River-
1003 AM EDT Fri Jul 10 2026

.REST OF TODAY...Northeast winds 10 knots or less. A chance of
showers early this afternoon.
.TONIGHT...Northeast winds less than 10 knots. Partly cloudy.
.SATURDAY...Northeast winds 10 knots or less. Sunny.
.SATURDAY NIGHT...Northeast winds less than 10 knots. Mainly
clear.
.SUNDAY...Light and variable winds. Mainly clear.
.MONDAY...Southwest winds 10 knots or less. Mainly clear.
.TUESDAY...Southwest winds 5 to 15 knots becoming west. Mainly
clear, then becoming partly cloudy.

$$

LEZ040-102100-
Ripley to Dunkirk along Lake Erie-
1003 AM EDT Fri Jul 10 2026

.REST OF TODAY...Northeast winds 5 to 10 knots. A chance of
showers late this morning, then a chance of showers and
thunderstorms this afternoon. Waves 1 foot or less.
.TONIGHT...Northeast winds 10 knots or less. Partly cloudy. Waves
1 foot or less.
.SATURDAY...Northeast winds 5 to 10 knots. Sunny. Waves 1 foot or
less.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots becoming light
and variable. Mainly clear. Waves 1 foot or less.
.SUNDAY...East winds less than 10 knots becoming southeast.
Mainly clear. Waves 1 foot or less.
.MONDAY...South winds 10 knots or less becoming southwest. Mainly
clear. Waves 1 foot or less.
.TUESDAY...Southwest winds 5 to 15 knots. Mainly clear, then
becoming partly cloudy. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LEZ041-102100-
Dunkirk to Buffalo along Lake Erie-
1003 AM EDT Fri Jul 10 2026

.REST OF TODAY...Northeast winds 10 knots or less becoming north.
A chance of showers and thunderstorms this afternoon. Waves
1 foot or less.
.TONIGHT...North winds 10 knots or less becoming east. Partly
cloudy. Waves 1 foot or less.
.SATURDAY...Northeast winds 10 knots or less. Sunny. Waves 1 foot
or less.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots becoming light
and variable. Mainly clear. Waves 1 foot or less.
.SUNDAY...Light and variable winds. Mainly clear. Waves 1 foot or
less.
.MONDAY...South winds 10 knots or less becoming southwest. Mainly
clear. Waves 1 foot or less.
.TUESDAY...Southwest winds 5 to 15 knots. Mainly clear, then
becoming partly cloudy. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ042-102100-
Niagara River to Hamlin Beach along Lake Ontario-
1003 AM EDT Fri Jul 10 2026

.REST OF TODAY...Northeast winds 10 knots or less. Mostly cloudy
late this morning, then becoming mostly sunny. Waves 1 foot or
less.
.TONIGHT...Northeast winds 10 knots or less. Partly cloudy. Waves
1 foot or less.
.SATURDAY...Northeast winds 5 to 10 knots. Sunny. Waves 1 foot or
less.
.SATURDAY NIGHT...Northeast winds less than 10 knots. Mainly
clear. Waves 1 foot or less.
.SUNDAY...Light and variable winds. Mainly clear. Waves 1 foot or
less.
.MONDAY...Southwest winds 5 to 15 knots. Mainly clear, then
becoming partly cloudy. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. Mainly clear, then becoming partly cloudy. Waves 1 to
2 feet building to 2 to 4 feet.

$$

LOZ043-044-102100-
Hamlin Beach to Mexico Bay along Lake Ontario
including Irondequoit Bay-
1003 AM EDT Fri Jul 10 2026

.REST OF TODAY...Northeast winds 5 to 10 knots becoming north.
Mostly cloudy late this morning, then becoming mostly sunny.
Waves 1 foot or less.
.TONIGHT...North winds 5 to 10 knots becoming northeast. Partly
cloudy. Waves 1 foot or less.
.SATURDAY...Northeast winds 5 to 10 knots becoming north. Sunny.
Waves 1 foot or less.
.SATURDAY NIGHT...North winds 5 to 10 knots becoming light and
variable. Mainly clear. Waves 1 foot or less.
.SUNDAY...Light and variable winds. Mainly clear. Waves 1 foot or
less.
.MONDAY...Southwest winds 10 knots or less. Mainly clear, then
becoming partly cloudy. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. Mainly clear, then becoming partly cloudy. Waves 1 to
3 feet building to 3 to 6 feet. Waves occasionally around 7 feet.

The water temperature off Rochester is 48 degrees.

$$

LOZ045-102100-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
1003 AM EDT Fri Jul 10 2026

.REST OF TODAY...North winds 10 knots or less becoming northwest.
Partly to mostly sunny. Waves 1 foot or less.
.TONIGHT...Northwest winds 5 to 10 knots becoming northeast.
Mainly clear in the evening, then becoming partly cloudy. Waves
1 foot or less.
.SATURDAY...Northeast winds 5 to 10 knots becoming north. Sunny.
Waves 1 foot or less.
.SATURDAY NIGHT...North winds 5 to 10 knots becoming light and
variable. Clear. Waves 1 foot or less.
.SUNDAY...Light and variable winds becoming south 5 to 10 knots.
Mainly clear. Waves 1 foot or less.
.MONDAY...South winds 5 to 15 knots becoming southwest. Mainly
clear, then becoming partly cloudy. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. Partly cloudy. Waves 1 to 3 feet building to 3 to
6 feet. Waves occasionally around 7 feet.

$$

Radar