Marine Weather and Tide Forecast for Windsor Locks, CT
 | Sunrise 7:11 AM Sunset 6:50 PM Moonrise 12:41 AM Moonset 9:44 AM |
Marine Forecasts
NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
ANZ331 Long Island Sound East Of New Haven Ct/port Jefferson Ny To The Mouth Of The Connecticut River- 601 Am Edt Mon Mar 9 2026
Today - SW winds around 5 kt, becoming S late. Seas 1 ft or less. Patchy fog early this morning with vsby 1 to 3 nm.
Tonight - SW winds 5 to 10 kt. Seas 1 ft or less. Wave detail: sw 1 ft at 2 seconds. Patchy fog after midnight with vsby 1 to 3 nm.
Tue - SW winds around 5 kt. Seas 1 ft or less. Patchy fog in the morning with vsby 1 to 3 nm.
Tue night - S winds around 5 kt. Seas 1 ft or less. Patchy fog after midnight with vsby 1 to 3 nm.
Wed - SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 ft or less. Wave detail: se 1 ft at 2 seconds. Patchy fog in the morning. Slight chance of showers in the afternoon. Vsby 1 to 3 nm in the morning.
Wed night - S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave detail: sw 2 ft at 4 seconds. Chance of rain.
Thu - W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Rain likely with chance of snow.
Thu night - NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Fri - SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft.
Fri night - SW winds 15 to 20 kt. Seas 2 to 3 ft. Chance of rain and snow.
ANZ300 601 Am Edt Mon Mar 9 2026
Synopsis for the long island and connecticut coastal waters - A broad area of high pressure will be in place for today into Tuesday. The next front approaches mid week, and arrives late Wednesday night into Thursday. High pressure returns Thursday night into Friday. Another frontaly system approaches the waters Friday night and should pass through to begin next weekend.
7 Day Forecast for Marine Location Near Windsor Locks, CT
NEW! Add second zone forecast
| Hartford Click for Map Mon -- 12:39 AM EDT Moonrise Mon -- 02:55 AM EDT 0.39 feet Low Tide Mon -- 07:12 AM EDT Sunrise Mon -- 07:37 AM EDT 1.86 feet High Tide Mon -- 09:45 AM EDT Moonset Mon -- 03:49 PM EDT 0.18 feet Low Tide Mon -- 06:50 PM EDT Sunset Mon -- 08:09 PM EDT 1.42 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Hartford, Connecticut River, Connecticut, Tide feet
| 12 am |
| 0.7 |
| 1 am |
| 0.6 |
| 2 am |
| 0.4 |
| 3 am |
| 0.4 |
| 4 am |
| 0.6 |
| 5 am |
| 1.1 |
| 6 am |
| 1.5 |
| 7 am |
| 1.8 |
| 8 am |
| 1.9 |
| 9 am |
| 1.7 |
| 10 am |
| 1.5 |
| 11 am |
| 1.2 |
| 12 pm |
| 0.9 |
| 1 pm |
| 0.7 |
| 2 pm |
| 0.4 |
| 3 pm |
| 0.2 |
| 4 pm |
| 0.2 |
| 5 pm |
| 0.4 |
| 6 pm |
| 0.9 |
| 7 pm |
| 1.2 |
| 8 pm |
| 1.4 |
| 9 pm |
| 1.4 |
| 10 pm |
| 1.2 |
| 11 pm |
| 1 |
Tide / Current for Hartford Jetty (depth 9 ft), Connecticut River, Long Island Sound, Connecticut Current
| Hartford Jetty (depth 9 ft) Click for Map Flood direction 290 true Ebb direction 95 true Note: Velocities for this station should be disregarded--use times only. Mon -- 12:39 AM EDT Moonrise Mon -- 04:22 AM EDT 0.01 knots Slack Mon -- 05:50 AM EDT 0.00 knots Max Flood Mon -- 07:12 AM EDT Sunrise Mon -- 07:48 AM EDT -0.00 knots Slack Mon -- 09:45 AM EDT Moonset Mon -- 11:49 AM EDT -0.72 knots Max Ebb Mon -- 05:06 PM EDT 0.00 knots Slack Mon -- 06:28 PM EDT 0.00 knots Max Flood Mon -- 06:50 PM EDT Sunset Mon -- 08:21 PM EDT -0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Hartford Jetty (depth 9 ft), Connecticut River, Long Island Sound, Connecticut Current, knots
| 12 am |
| -0.6 |
| 1 am |
| -0.6 |
| 2 am |
| -0.4 |
| 3 am |
| -0.3 |
| 4 am |
| -0.1 |
| 5 am |
| 0 |
| 6 am |
| 0 |
| 7 am |
| 0 |
| 8 am |
| -0.1 |
| 9 am |
| -0.3 |
| 10 am |
| -0.5 |
| 11 am |
| -0.7 |
| 12 pm |
| -0.7 |
| 1 pm |
| -0.7 |
| 2 pm |
| -0.6 |
| 3 pm |
| -0.4 |
| 4 pm |
| -0.2 |
| 5 pm |
| -0 |
| 6 pm |
| 0 |
| 7 pm |
| 0 |
| 8 pm |
| 0 |
| 9 pm |
| -0.1 |
| 10 pm |
| -0.4 |
| 11 pm |
| -0.5 |
FXUS61 KBOX 091727 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 127 PM EDT Mon Mar 9 2026
WHAT HAS CHANGED
No significant changes to the forecast. High confidence in near record high temperatures Tuesday.
KEY MESSAGES
- Area of fog quickly dissipate by mid-Tue morning
Otherwise
sunshine returns Tue with near record highs in the upper 60s to lower 70s away from the immediate coast.
- A more unsettled/active weather pattern Wed/Thu, with a round or two of precipitation. Back to cool temperatures later Thu into Friday.
- With dew points in the 30s and 40s, along with minor precip events, expecting a controlled/diurnal snowmelt over the coming week. Hence, only minor river flooding possible.
KEY MESSAGE 1...Areas of fog quickly dissipate by mid-Tue morning.
Otherwise...sunshine returns Tue with near record highs in the upper 60s to lower 70s away from the immediate coast.
Areas of fog overnight into Tue morning, especially near the south coast. The fog will quickly burn off after sunrise given a lot of dry air just above the boundary layer.
Lots of sunshine again tomorrow/Tue and even warmer temps aloft, from +12C/+13C today to +14/+15C Tue will yield another spring-like day, with highs in the upper 60s to lower 70s. Given this, we followed the warmer NBM 95 percentile for MaxT tomorrow. These temps will come close to record highs for the day (see climate section for specifics). Of course it will be noticeably cooler on the immediate south coast, Cape and Islands given S-SW winds streaming across the cool near shore waters.
KEY MESSAGE 2...Trending more unsettled Wed/Thu with a round or two of precipitation. Back to cool temperatures late Thu into Friday.
Backdoor front slips into northeast MA late Tue night/early Wed and then slowly lifts north as a warm front later Wed. This will yield lots of clouds Wed along with a chance of showers, but by no means a washout. Not as warm Wed given cloud cover and onshore flow, but still mild with highs in the 50s, 60-65 inland. Deepening parent low tracks thru the St Lawrence River Valley Wed night, with its attending cold front entering SNE Thu. Strong jet dynamics coupled with good moisture advection will yield widespread showers Wed night into Thu. Models showing lots of spread regarding potential anafrontal precip, with some of the guidance supporting rain changing to snow and/or sleet before ending across the high terrain.
Friday the post frontal airmass overhead means cooler temperatures, highs 40-45, which is on target for this time of year. Another northern stream low passes to our north late Fri/Fri night, which may bring some scattered rain/high elevation snow showers. Dry weather is likely Sat behind this system and possibly lingering into much of Sunday, before the next system impacts SNE Sun night into Monday.
KEY MESSAGE 3...Expecting controlled/diurnal snowmelt over the coming week. Thus, only minor river flooding possible.
Given dew pts are only expected to rise into the 30s and 40s, along with minor precip events, we are expected a controlled/diurnal snowmelt. This will contribute back to the watershed leading to rises, but for the reasons mentioned above, only expecting minor flood stages to be observed as a worse case scenario. Guidance continues to indicate the most likely spots to see flooding are along the Connecticut River by next weekend with addition of S. RI rivers by early next week.
AVIATION /18Z MONDAY THROUGH SATURDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update: High confidence.
IFR/LIFR in fog should return quickly to Cape Cod and the Islands by this evening and persist overnight. Elsewhere we expect another night of patchy valley fog with more brief IFR conditions. VFR Tue with S/SW flow. Conditions should improve quickly Tue morning near Cape Cod and Islands.
Other concern is for a period of LLWS in central/eastern MA and RI early tonight as SW winds at 2000 ft increase to 35-40kt.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Tuesday Night through Saturday/...
Wednesday: Mainly VFR, with local MVFR possible. Breezy. Chance RA.
Wednesday Night: Mainly VFR, with local IFR possible. Breezy.
Chance RA.
Thursday: Mainly VFR, with local MVFR possible. Windy with local gusts up to 30 kt. Chance RA.
Thursday Night through Friday: VFR. Breezy.
Friday Night: Mainly VFR, with local MVFR possible. Breezy.
Chance RA, chance SN.
Saturday: Breezy.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today through Tuesday night...High confidence.
A weak pressure gradient will keep winds and seas below small craft advisory thresholds through Tue night
Areas of fog
some of which will be dense at times will impact our southern waters during the overnight and early morning hours. This will result in poor vsbys for mariners at times, but improving by mid to late morning.
Outlook /Wednesday through Saturday/...
Wednesday: Winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of rain.
Wednesday Night: Strong winds with areas of gusts up to 30 kt.
Areas of rough seas. Chance of rain.
Thursday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 10 ft. Chance of rain.
Thursday Night: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Chance of rain, slight chance of snow.
Friday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Friday Night: Strong winds with gusts up to 30 kt. Seas up to 5 ft. Chance of rain.
Saturday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas.
CLIMATE
Record highs for Tuesday, March 10th...
BOS
71
1878 PVD
72
2016 BDL
72
2016 ORH
67
2020
Average high for 3/10 is 40-45.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.
Area Forecast Discussion National Weather Service Boston/Norton MA 127 PM EDT Mon Mar 9 2026
WHAT HAS CHANGED
No significant changes to the forecast. High confidence in near record high temperatures Tuesday.
KEY MESSAGES
- Area of fog quickly dissipate by mid-Tue morning
Otherwise
sunshine returns Tue with near record highs in the upper 60s to lower 70s away from the immediate coast.
- A more unsettled/active weather pattern Wed/Thu, with a round or two of precipitation. Back to cool temperatures later Thu into Friday.
- With dew points in the 30s and 40s, along with minor precip events, expecting a controlled/diurnal snowmelt over the coming week. Hence, only minor river flooding possible.
KEY MESSAGE 1...Areas of fog quickly dissipate by mid-Tue morning.
Otherwise...sunshine returns Tue with near record highs in the upper 60s to lower 70s away from the immediate coast.
Areas of fog overnight into Tue morning, especially near the south coast. The fog will quickly burn off after sunrise given a lot of dry air just above the boundary layer.
Lots of sunshine again tomorrow/Tue and even warmer temps aloft, from +12C/+13C today to +14/+15C Tue will yield another spring-like day, with highs in the upper 60s to lower 70s. Given this, we followed the warmer NBM 95 percentile for MaxT tomorrow. These temps will come close to record highs for the day (see climate section for specifics). Of course it will be noticeably cooler on the immediate south coast, Cape and Islands given S-SW winds streaming across the cool near shore waters.
KEY MESSAGE 2...Trending more unsettled Wed/Thu with a round or two of precipitation. Back to cool temperatures late Thu into Friday.
Backdoor front slips into northeast MA late Tue night/early Wed and then slowly lifts north as a warm front later Wed. This will yield lots of clouds Wed along with a chance of showers, but by no means a washout. Not as warm Wed given cloud cover and onshore flow, but still mild with highs in the 50s, 60-65 inland. Deepening parent low tracks thru the St Lawrence River Valley Wed night, with its attending cold front entering SNE Thu. Strong jet dynamics coupled with good moisture advection will yield widespread showers Wed night into Thu. Models showing lots of spread regarding potential anafrontal precip, with some of the guidance supporting rain changing to snow and/or sleet before ending across the high terrain.
Friday the post frontal airmass overhead means cooler temperatures, highs 40-45, which is on target for this time of year. Another northern stream low passes to our north late Fri/Fri night, which may bring some scattered rain/high elevation snow showers. Dry weather is likely Sat behind this system and possibly lingering into much of Sunday, before the next system impacts SNE Sun night into Monday.
KEY MESSAGE 3...Expecting controlled/diurnal snowmelt over the coming week. Thus, only minor river flooding possible.
Given dew pts are only expected to rise into the 30s and 40s, along with minor precip events, we are expected a controlled/diurnal snowmelt. This will contribute back to the watershed leading to rises, but for the reasons mentioned above, only expecting minor flood stages to be observed as a worse case scenario. Guidance continues to indicate the most likely spots to see flooding are along the Connecticut River by next weekend with addition of S. RI rivers by early next week.
AVIATION /18Z MONDAY THROUGH SATURDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update: High confidence.
IFR/LIFR in fog should return quickly to Cape Cod and the Islands by this evening and persist overnight. Elsewhere we expect another night of patchy valley fog with more brief IFR conditions. VFR Tue with S/SW flow. Conditions should improve quickly Tue morning near Cape Cod and Islands.
Other concern is for a period of LLWS in central/eastern MA and RI early tonight as SW winds at 2000 ft increase to 35-40kt.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Tuesday Night through Saturday/...
Wednesday: Mainly VFR, with local MVFR possible. Breezy. Chance RA.
Wednesday Night: Mainly VFR, with local IFR possible. Breezy.
Chance RA.
Thursday: Mainly VFR, with local MVFR possible. Windy with local gusts up to 30 kt. Chance RA.
Thursday Night through Friday: VFR. Breezy.
Friday Night: Mainly VFR, with local MVFR possible. Breezy.
Chance RA, chance SN.
Saturday: Breezy.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today through Tuesday night...High confidence.
A weak pressure gradient will keep winds and seas below small craft advisory thresholds through Tue night
Areas of fog
some of which will be dense at times will impact our southern waters during the overnight and early morning hours. This will result in poor vsbys for mariners at times, but improving by mid to late morning.
Outlook /Wednesday through Saturday/...
Wednesday: Winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of rain.
Wednesday Night: Strong winds with areas of gusts up to 30 kt.
Areas of rough seas. Chance of rain.
Thursday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 10 ft. Chance of rain.
Thursday Night: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Chance of rain, slight chance of snow.
Friday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Friday Night: Strong winds with gusts up to 30 kt. Seas up to 5 ft. Chance of rain.
Saturday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas.
CLIMATE
Record highs for Tuesday, March 10th...
BOS
71
1878 PVD
72
2016 BDL
72
2016 ORH
67
2020
Average high for 3/10 is 40-45.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| NWHC3 - 8465705 - New Haven, CT | 46 mi | 47 min | S 5.1G | 51°F | 35°F | 30.05 | ||
| NLHC3 | 47 mi | 47 min | 63°F | 35°F | 30.03 |
Wind History for New Haven, CT
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KBDL
Terminal Aerodrome Forecast (TAF) for KBDL
Wind History Graph: BDL
(wind in knots)
GEOS Local Image of north east
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