Water Temperature of the Peconic River in Riverhead, NY

Current Water Temperature

79.2°F

Measurement Time: Tuesday, August 5, 2025, 10:54 AM EDT

Temperature Locations

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Local Points of Interest

Colonels Island; Flanders, NY

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Peconic River

Station Name: PECONIC RIVER AT COUNTY HWY 105 AT RIVERHEAD NY
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
Cross River Dr
Riverhead, NY 11946
Suffolk County

GPS Coordinates: 40.91777778, -72.6386667

Nearby Water Temperatures

Orient Harbor, Orient, NY (23.0 mi)
Flax Pond, Old Field, NY (26.5 mi)
Great South Bay, West Sayville, NY (27.3 mi)
New Haven Harbor, New Haven, CT (28.9 mi)
Connecticut River, Old Lyme, CT (31.2 mi)
Housatonic River, Stratford, CT (31.3 mi)
Bridgeport Harbor, Bridgeport, CT (33.4 mi)
Rooster River, Bridgeport, CT (35.2 mi)
Fort Pond Bay, Montauk, NY (36.6 mi)
Mill River, Southport, CT (36.7 mi)
Mill River, Fairfield, CT (36.8 mi)
Quinnipiac River, Wallingford, CT (38.3 mi)
East Branch Eightmile River, Lyme, CT (38.6 mi)
Eightmile River, East Haddam, CT (39.5 mi)
Saugatuck River, Westport, CT (40.1 mi)

Weather for Riverhead, New York

Current Weather

77.4°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 64%
Feels Like: 80.3°F
Wind: SE 6.9 mph
Wind Gusts: 10.2 mph
Pressure: 30.32 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 3

Five Day Weather Forecast

Partly Cloudy
Tue
H: 84°F
L: 65°F
Overcast
Wed
H: 75°F
L: 66°F
Partly Cloudy
Thu
H: 75°F
L: 66°F
Partly Cloudy
Fri
H: 78°F
L: 65°F
Sunny
Sat
H: 77°F
L: 67°F

Air Quality

AQI: 1 - Good
PM2.5: 39.41 μg/m3
PM10: 43.85 μg/m3
Carbon Monoxide: 484.7 μg/m3
Nitrogen Dioxide: 9.81 μg/m3
Sulphur Dioxide: 3.15 μg/m3
Ozone: 113 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 12:56 AM
Sunset: 8:02 PM
Daylight: 14 hrs 11 mins
Moonrise: 5:56 PM
Moon Transit: 10:12 PM
Moonset: 1:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

11:39 AM - 2:09 PM
12:00 AM - 12:00 AM

Minor Periods

5:26 PM - 6:56 PM
1:04 AM - 2:34 AM

Action Rating: 2 out of 5

Air Quality Alert issued August 5 at 12:35AM EDT by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Tue August 5, 2025, 12:35 AM
Expires: Tue August 5, 2025, 11:00 PM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone and Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Air Quality Alert issued August 5 at 12:35AM EDT by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Tue August 5, 2025, 12:35 AM
Expires: Tue August 5, 2025, 11:00 PM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone and Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Air Quality Alert issued August 5 at 9:54AM EDT by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Tue August 5, 2025, 9:54 AM
Expires: Wed August 6, 2025, 12:00 AM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone and Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Air Quality Alert issued August 5 at 12:35AM EDT by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Tue August 5, 2025, 12:35 AM
Expires: Tue August 5, 2025, 11:00 PM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone and Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Air Quality Alert issued August 5 at 12:35AM EDT by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Tue August 5, 2025, 12:35 AM
Expires: Tue August 5, 2025, 11:00 PM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone and Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Tuesday, August 5, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 73.2°F
Average Humidity: 82%
Chance of Rain: 0%
Wind: 8.9 mph
UV Index: 1.8

Air Quality

AQI: 2 - Moderate
PM2.5: 40.17 μg/m3
PM10: 44.78 μg/m3
Carbon Monoxide: 511.56 μg/m3
Nitrogen Dioxide: 8.64 μg/m3
Sulphur Dioxide: 4.67 μg/m3
Ozone: 128.48 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 12:56 AM
Sunset: 8:02 PM
Daylight: 14 hrs 11 mins
Moonrise: 5:56 PM
Moon Transit: 10:12 PM
Moonset: 1:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

11:39 AM - 2:09 PM
12:00 AM - 12:00 AM

Minor Periods

5:26 PM - 6:56 PM
1:04 AM - 2:34 AM

Action Rating: 2 out of 5

Wednesday, August 6, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 69.9°F
Average Humidity: 79%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 1.5

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 47.18 μg/m3
PM10: 51.67 μg/m3
Carbon Monoxide: 458.73 μg/m3
Nitrogen Dioxide: 9.01 μg/m3
Sulphur Dioxide: 3.12 μg/m3
Ozone: 98.6 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 12:56 AM
Sunset: 8:00 PM
Daylight: 14 hrs 8 mins
Moonrise: 6:44 PM
Moon Transit: 11:07 PM
Moonset: 2:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

12:34 AM - 3:04 PM
12:00 AM - 12:00 AM

Minor Periods

6:14 PM - 7:44 PM
2:01 AM - 3:31 AM

Action Rating: 3 out of 5

Thursday, August 7, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 69.8°F
Average Humidity: 67%
Chance of Rain: 0%
Wind: 11.4 mph
UV Index: 2

Air Quality

AQI: 2 - Moderate
PM2.5: 24.09 μg/m3
PM10: 29.35 μg/m3
Carbon Monoxide: 382.88 μg/m3
Nitrogen Dioxide: 4.72 μg/m3
Sulphur Dioxide: 1.42 μg/m3
Ozone: 80.2 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 12:56 AM
Sunset: 7:59 PM
Daylight: 14 hrs 6 mins
Moonrise: 7:24 PM
Moon Transit: 12:00 AM
Moonset: 3:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:28 PM - 3:58 PM

Minor Periods

6:54 PM - 8:24 PM
3:05 AM - 4:35 AM

Action Rating: 3 out of 5

Friday, August 8, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 70.1°F
Average Humidity: 64%
Chance of Rain: 0%
Wind: 11 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 13.82 μg/m3
PM10: 18.71 μg/m3
Carbon Monoxide: 296.52 μg/m3
Nitrogen Dioxide: 7.14 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 72.32 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 12:56 AM
Sunset: 7:58 PM
Daylight: 14 hrs 4 mins
Moonrise: 7:57 PM
Moon Transit: 12:01 AM
Moonset: 4:45 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:21 PM - 4:51 PM

Minor Periods

7:27 PM - 8:57 PM
4:15 AM - 5:45 AM

Action Rating: 4 out of 5

Saturday, August 9, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 71.5°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 12.1 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 14.99 μg/m3
PM10: 20.17 μg/m3
Carbon Monoxide: 289.45 μg/m3
Nitrogen Dioxide: 10 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 62.46 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 12:56 AM
Sunset: 7:57 PM
Daylight: 14 hrs 2 mins
Moonrise: 8:26 PM
Moon Transit: 12:53 AM
Moonset: 5:58 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

12:23 AM - 2:53 AM
3:11 PM - 5:41 PM

Minor Periods

7:56 PM - 9:26 PM
5:28 AM - 6:58 AM

Action Rating: 5 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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