Marine Weather and Tide Forecast for Olcott, NY
 | Sunrise 5:34 AM Sunset 8:53 PM Moonrise 12:51 AM Moonset 1:36 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
LOZ042 Niagara River To Sodus Bay Along Lake Ontario Including Irondequoit Bay- 1003 Pm Edt Mon Jun 8 2026
Rest of tonight - East winds 5 to 10 knots becoming southeast. Mainly clear late this evening, then becoming partly cloudy. Waves 2 feet or less.
Tuesday - Southeast winds 10 knots or less becoming east. A chance of showers and Thunderstorms in the afternoon. Waves 1 foot or less.
Tuesday night - Southeast winds 5 to 15 knots becoming south. Showers with a chance of Thunderstorms in the evening, then showers overnight. Waves 1 foot or less.
Wednesday - South winds 10 to 15 knots becoming southwest. Showers in the morning, then showers likely with a chance of Thunderstorms in the afternoon. Waves 2 feet or less.
Wednesday night - Southwest winds 5 to 15 knots. A chance of showers in the evening, then showers likely with a chance of Thunderstorms overnight. Waves 2 feet or less.
Thursday - Southwest winds 5 to 15 knots. Showers likely with a chance of Thunderstorms during the day, then a chance of showers and Thunderstorms Thursday night. Waves 2 feet or less.
Friday - Southwest winds 15 to 20 knots diminishing to 5 to 15 knots. Showers with a chance of Thunderstorms. Waves 1 to 3 feet.
Saturday - 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.
the water temperature off rochester is 59 degrees.
winds and waves higher in and near Thunderstorms.
the water temperature off rochester is 59 degrees.
LOZ005
No data
No data
7 Day Forecast for Marine Location Near Olcott, NY
NEW! Add second zone forecast
FXUS61 KBUF 090625 AFDBUF
Area Forecast Discussion National Weather Service Buffalo NY 225 AM EDT Tue Jun 9 2026
WHAT HAS CHANGED
No significant changes with this forecast package.
KEY MESSAGES
1) Increasing heat and humidity this week. Heat indices could reach the mid 90s Thursday and Friday.
2) Scattered showers and thunderstorms are expected to return mid- week.
DISCUSSION
KEY MESSAGE 1...Increasing heat and humidity this week. Heat indices could reach the mid 90s Thursday and Friday.
A ridge axis will move across the forecast area today. Warm advection within a developing southerly flow will send temperatures well above normal today with highs in the mid to upper 80s, a few spot could get to 90F across the lake plains and in the Genesee Valley and Finger Lakes. Lower temperatures are expected near the lakeshores.
The warmest days this week appear to be Thursday and Friday as another ridge builds into the region. 850 mb temperatures climb to near +18C and with the combination of an increasingly moist airmass, heat index values could reach in the lower to mid 90s. Heat headlines are possible for some locations during this time period, but confidence is lower with the potential for clouds and scattered convection.
KEY MESSAGE 2...Scattered showers and thunderstorms are expected to return mid-week.
A shortwave trough will approach the region with warm, moist air spreading across the region today and Wednesday, increasing the potential for showers and thunderstorms. Initially, widely scattered showers and thunderstorms are expected to develop as increasing elevated instability moves into western New York today. Dry weather will likely continue east of Lake Ontario.
A surface trough is expected to move through tonight, further increasing chances for showers and a few thunderstorms. A weak mid level disturbance is expected to cross the region Wednesday. Forcing looks limited with this feature, but will encounter and very warm and moist airmass leading to widely scattered thunderstorms during peak heating. Profiles indicated an uptick in shear with a non- zero risk of strong/severe storms, mainly across the Finger Lakes and east of Lake Ontario.
A mid-level ridge within in a warm and moist airmass is expected to build into the region towards the end of the week. Weak impulses embedded in the flow around the ridge could support showers and thunderstorms through Friday. The primary impact from any showers or thunderstorms will be heavy rain, as PWAT values are expected to exceed 1.5", which is above the 90th percentile for this time of year. Drier air is expected to move into the region for the start of the weekend.
AVIATION /06Z TUESDAY THROUGH SATURDAY/
Mainly VFR through the 06Z TAF cycle as surface high pressure settles off the Northeastern coastline.
A weakening shortwave trough will gradually encroach on the Great Lakes from the west today. Mid/high cloud cover will increase this morning with a 5-10kt southerly flow, which will likely preclude any early morning fog development.
The approaching trough may cause widely scattered showers or an isolated thunderstorm to develop west of KROC before 18z. Brief MVFR conditions cannot be ruled out in any showers that manage to develop. Shower/thunderstorm coverage is then expected to increase and spread eastward into this evening.
Outlook...
Tonight...Mainly VFR deteriorating to MVFR/IFR with showers and a few thunderstorms.
Wednesday.. MVFR/IFR gradually improving back towards VFR from west to east. Diminishing chances for showers and thunderstorms across the western terminals.
Wednesday night through Friday...Mainly VFR with a chance of showers and thunderstorms. Localized lower flight CATs within any heavier showers or storms.
Saturday...Mainly VFR. Dry weather.
MARINE
High pressure off the Northeast coast will maintain light winds today with local lake breeze circulations developing.
The passage of a weak low pressure wave will cause southerly component winds to develop tonight and Wednesday with speeds generally less than 15 knots with a light shop developing, but wave heights will remain below 3 feet.
Light to modest west to southwesterly flow will then prevail Wednesday night through this weekend, which may support marginal SCA conditions at times.
The approach of several low pressure waves may generate a few thunderstorms over the lakes at times this week. The most probable timeframe for thunderstorms will be tonight into early Wednesday.
BUF WATCHES/WARNINGS/ADVISORIES
NY...None.
MARINE...None.
Area Forecast Discussion National Weather Service Buffalo NY 225 AM EDT Tue Jun 9 2026
WHAT HAS CHANGED
No significant changes with this forecast package.
KEY MESSAGES
1) Increasing heat and humidity this week. Heat indices could reach the mid 90s Thursday and Friday.
2) Scattered showers and thunderstorms are expected to return mid- week.
DISCUSSION
KEY MESSAGE 1...Increasing heat and humidity this week. Heat indices could reach the mid 90s Thursday and Friday.
A ridge axis will move across the forecast area today. Warm advection within a developing southerly flow will send temperatures well above normal today with highs in the mid to upper 80s, a few spot could get to 90F across the lake plains and in the Genesee Valley and Finger Lakes. Lower temperatures are expected near the lakeshores.
The warmest days this week appear to be Thursday and Friday as another ridge builds into the region. 850 mb temperatures climb to near +18C and with the combination of an increasingly moist airmass, heat index values could reach in the lower to mid 90s. Heat headlines are possible for some locations during this time period, but confidence is lower with the potential for clouds and scattered convection.
KEY MESSAGE 2...Scattered showers and thunderstorms are expected to return mid-week.
A shortwave trough will approach the region with warm, moist air spreading across the region today and Wednesday, increasing the potential for showers and thunderstorms. Initially, widely scattered showers and thunderstorms are expected to develop as increasing elevated instability moves into western New York today. Dry weather will likely continue east of Lake Ontario.
A surface trough is expected to move through tonight, further increasing chances for showers and a few thunderstorms. A weak mid level disturbance is expected to cross the region Wednesday. Forcing looks limited with this feature, but will encounter and very warm and moist airmass leading to widely scattered thunderstorms during peak heating. Profiles indicated an uptick in shear with a non- zero risk of strong/severe storms, mainly across the Finger Lakes and east of Lake Ontario.
A mid-level ridge within in a warm and moist airmass is expected to build into the region towards the end of the week. Weak impulses embedded in the flow around the ridge could support showers and thunderstorms through Friday. The primary impact from any showers or thunderstorms will be heavy rain, as PWAT values are expected to exceed 1.5", which is above the 90th percentile for this time of year. Drier air is expected to move into the region for the start of the weekend.
AVIATION /06Z TUESDAY THROUGH SATURDAY/
Mainly VFR through the 06Z TAF cycle as surface high pressure settles off the Northeastern coastline.
A weakening shortwave trough will gradually encroach on the Great Lakes from the west today. Mid/high cloud cover will increase this morning with a 5-10kt southerly flow, which will likely preclude any early morning fog development.
The approaching trough may cause widely scattered showers or an isolated thunderstorm to develop west of KROC before 18z. Brief MVFR conditions cannot be ruled out in any showers that manage to develop. Shower/thunderstorm coverage is then expected to increase and spread eastward into this evening.
Outlook...
Tonight...Mainly VFR deteriorating to MVFR/IFR with showers and a few thunderstorms.
Wednesday.. MVFR/IFR gradually improving back towards VFR from west to east. Diminishing chances for showers and thunderstorms across the western terminals.
Wednesday night through Friday...Mainly VFR with a chance of showers and thunderstorms. Localized lower flight CATs within any heavier showers or storms.
Saturday...Mainly VFR. Dry weather.
MARINE
High pressure off the Northeast coast will maintain light winds today with local lake breeze circulations developing.
The passage of a weak low pressure wave will cause southerly component winds to develop tonight and Wednesday with speeds generally less than 15 knots with a light shop developing, but wave heights will remain below 3 feet.
Light to modest west to southwesterly flow will then prevail Wednesday night through this weekend, which may support marginal SCA conditions at times.
The approach of several low pressure waves may generate a few thunderstorms over the lakes at times this week. The most probable timeframe for thunderstorms will be tonight into early Wednesday.
BUF WATCHES/WARNINGS/ADVISORIES
NY...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| OLCN6 - Olcott Harbor, NY | 1 mi | 75 min | WSW 1.9G | 58°F | 29.84 | |||
| NIAN6 - 9063012 - Niagara Intake, NY | 24 mi | 57 min | 30.12 | |||||
| BUFN6 - 9063020 - Buffalo, NY | 33 mi | 57 min | S 5.1G | 30.11 | ||||
| 45159 - NW Lake Ontario Ajax | 34 mi | 75 min | NNE 1.9G | 56°F | 53°F | 1 ft | 30.12 | |
| 45139 - West Lake Ontario - Grimsby | 44 mi | 75 min | NW 3.9G | 56°F | 55°F | 1 ft | 30.12 | |
| PSTN6 - 9063028 - Sturgeon Point, NY | 48 mi | 57 min | 30.11 |
Wind History for Buffalo, NY
toggle option: (graph/table)
Link to 5 hour of 5 minute data for KIAG
Terminal Aerodrome Forecast (TAF) for KIAG
Wind History Graph: IAG
(wind in knots)
GEOS Local Image of north east
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Buffalo, NY,
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