Water Temperature of the Peconic River in Riverhead, NY

Current Water Temperature

33.6°F

Measurement Time: Sunday, December 28, 2025, 1:54 PM EST

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

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

GPS Coordinates: 40.91777778, -72.6386667

Nearby Water Temperatures

Orient Harbor, Orient, NY (23 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

30.3°F
Rain and snow
Conditions: Rain and snow
Humidity: 90%
Heat Index: 30.3°F
Feels Like: 26.3°F
Wind: SW 2.5 mph
Wind Gusts: 8 mph
Wind Chill: 26.3°F
Air Pressure: 1015.75 millibars
Dew Point: 26.3°F
Chance of Precipitation: 35%
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 10 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sun
H: 33°F
L: 16°F
Moderate rain
Mon
H: 49°F
L: 32°F
Partly Cloudy
Tue
H: 31°F
L: 28°F
Partly Cloudy
Wed
H: 34°F
L: 26°F
Cloudy
Thu
H: 29°F
L: 24°F

Air Quality

AQI: 1 - Good
PM2.5: 10.55 μg/m3
PM10: 15.65 μg/m3
Carbon Monoxide: 166.85 μg/m3
Nitrogen Dioxide: 4.35 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moonrise: 11:50 AM
Moon Transit: 6:38 PM
Moonset: 12:28 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

8:07 AM - 10:37 AM
6:08 PM - 8:38 PM

Minor Periods

11:20 AM - 12:50 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued December 28 at 4:37PM EST until December 28 at 10:00PM EST by NWS Upton NY

Effective: Sun December 28, 2025, 4:37 PM
Expires: Sun December 28, 2025, 10:00 PM

* WHAT...Light freezing rain or freezing drizzle expected. Total ice accumulations around a light glaze. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 10 PM EST this evening. * IMPACTS...Very slippery sidewalks, roads and bridges are possible. * ADDITIONAL DETAILS...Surface temperatures should rise above freezing by late this evening allowing any precip to change to plain rain.

Slow down and use caution while traveling. Prepare for possible power outages. Check local Department of Transportation information services for the latest road conditions.


Winter Weather Advisory issued December 28 at 12:56PM EST until December 29 at 12:00AM EST by NWS Upton NY

Effective: Sun December 28, 2025, 12:56 PM
Expires: Mon December 29, 2025, 12:00 AM

* WHAT...Freezing rain expected. Total ice accumulations from a light glaze to up to one tenth of an inch. * WHERE...Northern Fairfield, Northern Middlesex, Northern New Haven, and Northern New London Counties. * WHEN...From 4 PM this afternoon to midnight EST tonight. * IMPACTS...Difficult travel conditions are possible.

Slow down and use caution while traveling. Prepare for possible power outages. Check local Department of Transportation information services for the latest road conditions.


Winter Weather Advisory issued December 28 at 4:37PM EST until December 29 at 12:00AM EST by NWS Upton NY

Effective: Sun December 28, 2025, 4:37 PM
Expires: Sun December 28, 2025, 10:00 PM

* WHAT...Freezing rain expected. Total ice accumulations from a light glaze to up to one tenth of an inch. * WHERE...Northern Fairfield, Northern Middlesex, Northern New Haven, and Northern New London Counties. * WHEN...Until midnight EST tonight. * IMPACTS...Difficult travel conditions are possible.

Slow down and use caution while traveling. Prepare for possible power outages. Check local Department of Transportation information services for the latest road conditions.


Winter Weather Advisory issued December 28 at 12:56PM EST until December 28 at 11:00PM EST by NWS Upton NY

Effective: Sun December 28, 2025, 12:56 PM
Expires: Sun December 28, 2025, 11:00 PM

* WHAT...Freezing rain expected. Total ice accumulations around a light glaze. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 4 PM this afternoon to 11 PM EST this evening. * IMPACTS...Very slippery sidewalks, roads and bridges are possible.

Slow down and use caution while traveling. Prepare for possible power outages. Check local Department of Transportation information services for the latest road conditions.


Winter Weather Advisory issued December 28 at 4:37PM EST until December 28 at 11:00PM EST by NWS Upton NY

Effective: Sun December 28, 2025, 4:37 PM
Expires: Sun December 28, 2025, 10:00 PM

* WHAT...Light freezing rain or freezing drizzle. Total ice accumulations around a light glaze. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 11 PM EST this evening. * IMPACTS...Very slippery sidewalks, roads and bridges are possible.

Slow down and use caution while traveling. Prepare for possible power outages. Check local Department of Transportation information services for the latest road conditions.
Sunday, December 28, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 25.2°F
Average Humidity: 78%
Chance of Rain: 0%
Wind: 13.4 mph
UV Index: 0.2

Air Quality

AQI: 2 - Moderate
PM2.5: 15.93 μg/m3
PM10: 17.34 μg/m3
Carbon Monoxide: 249.41 μg/m3
Nitrogen Dioxide: 31.15 μg/m3
Sulphur Dioxide: 4.47 μg/m3
Ozone: 35.92 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moonrise: 11:50 AM
Moon Transit: 6:38 PM
Moonset: 12:28 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

8:07 AM - 10:37 AM
6:08 PM - 8:38 PM

Minor Periods

11:20 AM - 12:50 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 41.8°F
Average Humidity: 85%
Chance of Rain: 89%
Wind: 30.2 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 10.47 μg/m3
PM10: 13.8 μg/m3
Carbon Monoxide: 179.81 μg/m3
Nitrogen Dioxide: 10.23 μg/m3
Sulphur Dioxide: 3.09 μg/m3
Ozone: 63.88 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 11:52 AM
Sunset: 4:31 PM
Daylight: 9 hrs 17 mins
Moonrise: 12:17 AM
Moon Transit: 7:30 PM
Moonset: 1:41 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

8:58 AM - 11:28 AM
7:00 PM - 9:30 PM

Minor Periods

11:47 AM - 1:17 PM
1:11 AM - 2:41 AM

Action Rating: 2 out of 5

Tuesday, December 30, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 29.3°F
Average Humidity: 60%
Chance of Rain: 0%
Wind: 32 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 2.72 μg/m3
PM10: 3.18 μg/m3
Carbon Monoxide: 166.49 μg/m3
Nitrogen Dioxide: 7.08 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 67.2 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 11:53 AM
Sunset: 4:32 PM
Daylight: 9 hrs 17 mins
Moonrise: 12:50 AM
Moon Transit: 8:27 PM
Moonset: 2:59 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

9:52 AM - 12:22 AM
7:57 PM - 10:27 PM

Minor Periods

12:20 AM - 1:50 PM
2:29 AM - 3:59 AM

Action Rating: 2 out of 5

Wednesday, December 31, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 30.9°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 26.2 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 4.51 μg/m3
PM10: 5.08 μg/m3
Carbon Monoxide: 168.31 μg/m3
Nitrogen Dioxide: 11.18 μg/m3
Sulphur Dioxide: 5.59 μg/m3
Ozone: 66.12 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 11:53 AM
Sunset: 4:33 PM
Daylight: 9 hrs 18 mins
Moonrise: 1:32 PM
Moon Transit: 9:30 PM
Moonset: 4:19 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%

Best Times for Fishing or Hunting

Major Periods

10:53 AM - 1:23 PM
9:00 PM - 11:30 PM

Minor Periods

1:02 PM - 2:32 PM
3:49 AM - 5:19 AM

Action Rating: 2 out of 5

Thursday, January 1, 2026

Weather Forecast

Conditions: Cloudy
Average Temperature: 28.2°F
Average Humidity: 49%
Chance of Rain: 0%
Wind: 23.5 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 5.1 μg/m3
PM10: 5.61 μg/m3
Carbon Monoxide: 188.1 μg/m3
Nitrogen Dioxide: 13.17 μg/m3
Sulphur Dioxide: 6 μg/m3
Ozone: 57 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 11:54 AM
Sunset: 4:34 PM
Daylight: 9 hrs 19 mins
Moonrise: 2:26 PM
Moon Transit: 10:36 PM
Moonset: 5:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

11:58 AM - 2:28 PM
12:00 AM - 12:00 AM

Minor Periods

1:56 PM - 3:26 PM
5:07 AM - 6:37 AM

Action Rating: 2 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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