Heat and Fire Weather Concerns in the West

Heat will build over the Intermountain West and the Southwest the next couple of days. Lightning from dry thunderstorms can create new fire starts and combined with gusty winds may cause a fire to rapidly grow in Oregon and northern California. Elevated fire weather conditions are also expected in the Great Basin. Flash flooding will be possible in Arizona and west Texas, especially in burn scars. 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 Sun Jun 29 2025 The water temperature off Buffalo is 69 degrees.

1003 AM EDT Sun Jun 29 2025 The water temperature off Rochester is 59 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

564
FZUS51 KBUF 300803
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
403 AM EDT Mon Jun 30 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.

LEZ020-301500-
Upper Niagara River and Buffalo Harbor-
403 AM EDT Mon Jun 30 2025

.TODAY...Light and variable winds becoming southwest 5 to
10 knots. A chance of showers and thunderstorms late.
.TONIGHT...South winds 5 to 10 knots becoming southwest. Showers
likely with a chance of thunderstorms in the evening, then a
chance of showers and thunderstorms overnight.
.TUESDAY...Southwest winds 5 to 15 knots becoming west. A chance
of showers and thunderstorms in the morning, then a chance of
showers in the afternoon.
.TUESDAY NIGHT...West winds 5 to 10 knots. Mainly clear.
.WEDNESDAY...West winds 5 to 10 knots becoming southwest. Mainly
clear, then becoming partly cloudy.
.THURSDAY...West winds 10 knots or less becoming northwest. A
chance of showers during the day.
.FRIDAY...Northwest winds 10 knots or less becoming south. Mainly
clear, then becoming partly cloudy.

Winds and waves higher in and near thunderstorms.

The water temperature off Buffalo is 69 degrees.

$$

LOZ030-301500-
Lower Niagara River-
403 AM EDT Mon Jun 30 2025

.TODAY...Light and variable winds becoming south 5 to 10 knots. A
chance of showers and thunderstorms late.
.TONIGHT...South winds 5 to 10 knots becoming southwest. Showers
likely with a chance of thunderstorms in the evening, then a
chance of showers and thunderstorms overnight.
.TUESDAY...Southwest winds 5 to 10 knots becoming west. A chance
of showers and thunderstorms in the morning.
.TUESDAY NIGHT...West winds 5 to 10 knots. Mainly clear.
.WEDNESDAY...West winds 5 to 10 knots becoming southwest. Mainly
clear, then becoming partly cloudy.
.THURSDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers during the day.
.FRIDAY...Northwest winds 10 knots or less becoming south. Mainly
clear, then becoming partly cloudy.

Winds and waves higher in and near thunderstorms.

$$

LEZ040-041-301500-
Buffalo to Ripley along Lake Erie-
403 AM EDT Mon Jun 30 2025

.TODAY...South winds 10 knots or less becoming southwest. A
chance of showers and thunderstorms early this afternoon. Showers
likely with a chance of thunderstorms late. Waves 1 foot or less.
.TONIGHT...South winds 5 to 10 knots becoming southwest. Showers
with a chance of thunderstorms in the evening, then a chance of
showers and thunderstorms overnight. Waves 1 foot or less.
.TUESDAY...Southwest winds 5 to 15 knots. A chance of showers and
thunderstorms in the morning, then a chance of showers in the
afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots becoming west.
Becoming mainly clear. Waves 1 to 3 feet.
.WEDNESDAY...West winds 5 to 10 knots becoming southwest. Mainly
clear, then becoming partly cloudy. Waves 1 to 2 feet.
.THURSDAY...West winds 5 to 10 knots becoming north. A chance of
showers and thunderstorms during the day. Waves 2 feet or less.
.FRIDAY...North winds 10 knots or less becoming south. Mainly
clear, then becoming partly cloudy. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ042-301500-
Niagara River to Hamlin Beach along Lake Ontario-
403 AM EDT Mon Jun 30 2025

.TODAY...Southeast winds 10 knots or less becoming east. A chance
of showers and thunderstorms late. Waves 1 foot or less.
.TONIGHT...Southeast winds 5 to 10 knots becoming southwest.
Showers likely with a chance of thunderstorms in the evening,
then a chance of showers and thunderstorms overnight. Waves
1 foot or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west. A chance
of showers and thunderstorms in the morning. Waves 2 feet or
less.
.TUESDAY NIGHT...West winds 10 to 15 knots. Becoming mainly
clear. Waves 1 to 2 feet.
.WEDNESDAY...West winds 10 to 15 knots becoming southwest. Mainly
clear, then becoming partly cloudy. Waves 1 to 2 feet.
.THURSDAY...West winds 5 to 15 knots becoming northwest. A chance
of showers during the day. Waves 1 to 2 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming south. Mainly
clear, then becoming partly cloudy. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ043-044-301500-
Hamlin Beach to Mexico Bay along Lake Ontario
including Irondequoit Bay-
403 AM EDT Mon Jun 30 2025

.TODAY...Southeast winds 10 knots or less becoming east. Sunny.
Waves 1 foot or less.
.TONIGHT...Southeast winds 10 knots or less becoming south.
Showers with a chance of thunderstorms. Waves 1 foot or less.
.TUESDAY...Southwest winds 5 to 15 knots becoming west. Showers
likely with a chance of thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon. Waves
2 feet or less.
.TUESDAY NIGHT...West winds 10 to 15 knots. A chance of showers
in the evening. Waves 1 to 3 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming southwest. Mainly
clear, then becoming partly cloudy. Waves 1 to 3 feet.
.THURSDAY...West winds 5 to 15 knots becoming northwest. A chance
of showers and thunderstorms during the day. Waves 1 to 3 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming south. Mainly
clear, then becoming partly cloudy. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

The water temperature off Rochester is 59 degrees.

$$

LOZ045-301500-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
403 AM EDT Mon Jun 30 2025

.TODAY...South winds 10 knots or less. Sunny. Waves 1 foot or
less.
.TONIGHT...South winds 10 knots or less. Showers with a chance of
thunderstorms. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots. Showers likely with a
chance of thunderstorms in the morning, then a chance of showers
and thunderstorms in the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots becoming west. A
chance of showers in the evening. Waves 1 to 3 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming southwest. Mainly
clear. Waves 1 to 3 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming north. A
chance of showers and thunderstorms. Waves 1 to 3 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming south. Mainly
clear, then becoming partly cloudy. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

Radar