Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. 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 EST Sun Dec 7 2025 The water temperature off Buffalo is 40 degrees.

1003 AM EST Sun Dec 7 2025 The water temperature off Rochester is 43 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

671
FZUS51 KBUF 071503
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
1003 AM EST Sun Dec 7 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.

LEZ020-072200-
Upper Niagara River and Buffalo Harbor-
1003 AM EST Sun Dec 7 2025

.REST OF TODAY...Southwest winds 10 knots or less becoming west.
Snow, then a chance of snow late.
.TONIGHT...West winds 5 to 10 knots becoming north. Mostly cloudy
in the evening, then clearing.
.MONDAY...North winds 5 to 10 knots becoming light and variable.
Mostly sunny.
.MONDAY NIGHT...Light and variable winds becoming south 5 to
10 knots. Partly to mostly cloudy.
.TUESDAY...South winds 15 to 25 knots becoming southwest. Snow
showers likely during the day, then rain showers with snow
showers likely Tuesday night.
.WEDNESDAY...Southwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. Rain showers during the day, then
rain showers with snow showers likely Wednesday night.
.THURSDAY...West winds 5 to 10 knots. A chance of snow showers.

The water temperature off Buffalo is 40 degrees.

$$

LOZ030-072200-
Lower Niagara River-
1003 AM EST Sun Dec 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EST THIS AFTERNOON
THROUGH LATE TONIGHT...

.REST OF TODAY...Southwest winds 5 to 10 knots becoming west and
increasing to 15 to 20 knots. Snow likely, then a chance of snow
late.
.TONIGHT...Northwest winds 15 to 20 knots becoming north 5 to
15 knots. Mostly cloudy in the evening, then clearing.
.MONDAY...North winds 5 to 10 knots becoming light and variable.
Mostly sunny.
.MONDAY NIGHT...Light and variable winds becoming south 5 to
10 knots. Partly to mostly cloudy.
.TUESDAY...South winds 15 to 25 knots becoming southwest and
diminishing to around 10 knots. Rain showers with snow showers
likely.
.WEDNESDAY...Southwest winds 15 to 20 knots becoming northwest
and diminishing to around 10 knots. Rain showers during the day,
then rain showers likely with a chance of snow showers Wednesday
night.
.THURSDAY...West winds 5 to 10 knots. A chance of snow showers.

$$

LEZ040-041-072200-
Buffalo to Ripley along Lake Erie-
1003 AM EST Sun Dec 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EST THIS AFTERNOON
THROUGH LATE TONIGHT...

.REST OF TODAY...Southwest winds 10 to 15 knots becoming west
15 to 20 knots. Snow, then a chance of snow late. Waves 1 to
3 feet building to 2 to 4 feet.
.TONIGHT...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. Mostly cloudy in the evening, then becoming partly
cloudy. Waves 3 to 5 feet subsiding to 2 to 4 feet. Waves
occasionally around 6 feet.
.MONDAY...Northeast winds 5 to 15 knots becoming east less than
10 knots. Partly to mostly sunny. Waves 1 to 3 feet subsiding to
1 foot or less.
.MONDAY NIGHT...Southeast winds 10 knots or less becoming south
and increasing to 15 to 20 knots overnight. Partly cloudy. Waves
2 feet or less.
.TUESDAY...Southwest gales to 35 knots diminishing to 30 knots.
Rain showers with snow showers likely. Waves 3 to 5 feet building
to 8 to 12 feet, then subsiding to 6 to 9 feet. Waves
occasionally around 15 feet.
.WEDNESDAY...Southwest gales to 35 knots becoming northwest and
diminishing to 30 knots. Rain showers during the day, then rain
and snow showers Wednesday night. Waves 6 to 9 feet building to
9 to 12 feet, then subsiding to 6 to 9 feet. Waves occasionally
around 15 feet.
.THURSDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of snow showers during the day, then snow
showers likely Thursday night. Waves 3 to 6 feet subsiding to
2 to 4 feet. Waves occasionally around 7 feet.

$$

LOZ042-072200-
Niagara River to Hamlin Beach along Lake Ontario-
1003 AM EST Sun Dec 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON
THROUGH MONDAY MORNING...

.REST OF TODAY...Southwest winds 5 to 15 knots becoming west
15 to 20 knots. Snow. Waves 1 to 2 feet building to 2 to 4 feet.
.TONIGHT...Northwest winds 15 to 20 knots becoming north. Mostly
cloudy in the evening, then clearing. Waves 3 to 5 feet. Waves
occasionally around 6 feet.
.MONDAY...North winds 5 to 15 knots becoming northwest less than
10 knots. Mostly sunny. Waves 2 to 4 feet subsiding to 1 foot or
less.
.MONDAY NIGHT...Southwest winds 10 knots or less becoming south
10 to 15 knots. Mostly cloudy. Waves 1 foot or less.
.TUESDAY...Southwest gales to 35 knots diminishing to 15 to
20 knots. Rain showers with snow showers likely. Waves 2 to
4 feet building to 5 to 8 feet, then subsiding to 3 to 6 feet.
Waves occasionally around 10 feet.
.WEDNESDAY...South winds to 30 knots becoming northwest and
diminishing to 15 to 20 knots. Rain showers during the day, then
rain showers with a chance of snow showers Wednesday night. Waves
3 to 5 feet building to 4 to 7 feet. Waves occasionally around
9 feet.
.THURSDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of snow showers. Waves 3 to 6 feet subsiding
to 2 to 4 feet. Waves occasionally around 7 feet.

$$

LOZ043-072200-
Hamlin Beach to Sodus Bay along Lake Ontario
including Irondequoit Bay-
1003 AM EST Sun Dec 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON
THROUGH MONDAY MORNING...

.REST OF TODAY...Southwest winds 5 to 15 knots becoming west.
Snow. Waves 1 to 3 feet.
.TONIGHT...Northwest winds 15 to 20 knots becoming north. Snow
likely in the evening. Waves 3 to 6 feet. Waves occasionally
around 7 feet.
.MONDAY...North winds 5 to 15 knots becoming northwest. A chance
of snow showers in the morning. Waves 3 to 5 feet subsiding to
1 to 3 feet. Waves occasionally around 6 feet.
.MONDAY NIGHT...West winds 5 to 15 knots becoming south. Mostly
cloudy. Waves 1 foot or less.
.TUESDAY...South winds 15 to 25 knots becoming southwest. Snow
showers likely during the day, then rain showers with snow
showers likely Tuesday night. Waves 1 to 3 feet building to 2 to
4 feet.
.WEDNESDAY...South winds 15 to 25 knots becoming northwest. Rain
showers during the day, then rain showers with a chance of snow
showers Wednesday night. Waves 1 to 3 feet building to 5 to
8 feet. Waves occasionally around 10 feet.
.THURSDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of snow showers. Waves 4 to 7 feet subsiding
to 2 to 4 feet. Waves occasionally around 9 feet.

The water temperature off Rochester is 43 degrees.

$$

LOZ044-072200-
Sodus Bay to Mexico Bay along Lake Ontario-
1003 AM EST Sun Dec 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON
THROUGH MONDAY MORNING...

.REST OF TODAY...South winds 5 to 15 knots becoming west. A
chance of snow late this morning, then snow this afternoon. Waves
1 to 3 feet.
.TONIGHT...Northwest winds 15 to 20 knots becoming north. Snow
likely in the evening. Waves 2 to 4 feet building to 3 to 6 feet.
Waves occasionally around 7 feet.
.MONDAY...North winds 15 to 20 knots becoming northwest 5 to
15 knots. A chance of snow showers in the morning. Waves 3 to
5 feet subsiding to 1 to 2 feet. Waves occasionally around
6 feet.
.MONDAY NIGHT...West winds 10 knots or less becoming south 10 to
15 knots. Mostly cloudy. Waves 1 foot or less.
.TUESDAY...South winds 15 to 25 knots. Snow showers likely during
the day, then rain and snow showers Tuesday night. Waves 1 to
3 feet building to 3 to 5 feet. Waves occasionally around 6 feet.
.WEDNESDAY...South winds 15 to 25 knots becoming west. Rain and
snow showers. Waves 2 to 4 feet building to 6 to 9 feet. Waves
occasionally around 11 feet.
.THURSDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. Snow showers likely. Waves 5 to 8 feet subsiding to
2 to 4 feet. Waves occasionally around 10 feet.

$$

LOZ045-072200-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
1003 AM EST Sun Dec 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING
THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 5 to 15 knots becoming north. Snow.
Waves 2 feet or less.
.TONIGHT...North winds 15 to 20 knots. Snow likely in the
evening. Waves 1 to 3 feet building to 3 to 5 feet. Waves
occasionally around 6 feet.
.MONDAY...North winds 5 to 15 knots becoming west less than
10 knots. Sunny. Waves 2 to 4 feet subsiding to 2 feet or less.
.MONDAY NIGHT...West winds 10 knots or less becoming south 10 to
15 knots. Partly to mostly cloudy. Waves 2 feet or less.
.TUESDAY...South gales to 35 knots becoming southwest and
diminishing to 15 to 25 knots. Snow showers likely during the
day, then snow and rain showers Tuesday night. Waves 3 to 6 feet
building to 5 to 9 feet, then subsiding to 4 to 7 feet. Waves
occasionally around 11 feet.
.WEDNESDAY...South winds to 30 knots becoming northwest 15 to
25 knots. Rain and snow showers. Waves 3 to 6 feet building to
6 to 9 feet. Waves occasionally around 11 feet.
.THURSDAY...Northwest winds 15 to 20 knots diminishing to 10 to
15 knots. Snow showers likely. Waves 4 to 7 feet subsiding to
2 to 4 feet. Waves occasionally around 9 feet.

$$

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