Water Temperature of the Peconic River in Riverhead, NY

Current Water Temperature

35.2°F

Measurement Time: Sunday, January 18, 2026, 2:54 AM EST

Temperature Locations

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Local Points of Interest

Colonels Island; Flanders, NY

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

32.4°F
Patchy light snow
Patchy light snow
26.4°F
36.5°F
96%
W 6.3 mph
9.8 mph
30.8°F
28.9°F
0 in
60%
0 mi
1019 mbar
0.1

Five Day Weather Forecast

Moderate rain
Sun
H: 37°F
L: 31°F
Blizzard
Mon
H: 30°F
L: 27°F
Light freezing rain
Tue
H: 25°F
L: 18°F
Cloudy
Wed
H: 19°F
L: 12°F
Heavy snow
Thu
H: 30°F
L: 20°F

Air Quality

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:01 AM
Sunset: 4:51 PM
Daylight: 9 hrs 40 mins
Moonrise: 7:24 AM
Moon Transit: 11:58 AM
Moonset: 4:39 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:26 AM - 3:56 AM
11:28 AM - 1:58 PM

Minor Periods

4:09 PM - 5:39 PM
6:54 AM - 8:24 AM

Action Rating: 4 out of 5

Special Weather Statement issued January 17 at 5:51PM EST by NWS Upton NY

Effective: Sat January 17, 2026, 5:51 PM
Expires: Sun January 18, 2026, 4:00 AM

Roads remain wet from earlier precipitation, and with light winds and temperatures falling into the 20s and lower 30s, areas of black ice may develop. Motorists and pedestrians should use extra caution. Reduce speed, allow extra time, and be prepared for slippery travel.


Winter Weather Advisory issued January 18 at 1:18AM EST until January 19 at 4:00AM EST by NWS Upton NY

Effective: Sun January 18, 2026, 1:18 AM
Expires: Sun January 18, 2026, 6:15 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 5 inches. Isolated amounts up to 7 inches are possible in northern New London and northern Middlesex Counties. * WHERE...Portions of southern Connecticut and southeast New York. * WHEN...From 10 AM this morning to 4 AM EST Monday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Precipitation may start off as a rain/snow mix at the coast. By late this afternoon all snow is expected. The bulk of the accumulation is expected to be after 5 pm today.

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


Winter Weather Advisory issued January 18 at 5:17AM EST until January 19 at 4:00AM EST by NWS Upton NY

Effective: Sun January 18, 2026, 5:17 AM
Expires: Sun January 18, 2026, 7:00 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 5 inches. Isolated amounts up to 7 inches are possible in northern New London and northern Middlesex Counties. * WHERE...Portions of southern Connecticut and southeast New York. * WHEN...Until 4 AM EST Monday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Precipitation may start off as a rain/snow mix at the coast. By late this afternoon all snow is expected. The bulk of the accumulation is expected to be after 5 pm today.

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


Special Weather Statement issued January 18 at 5:06AM EST by NWS Upton NY

Effective: Sun January 18, 2026, 5:06 AM
Expires: Sun January 18, 2026, 10:00 AM

Light snow has started to overspread the area. This combined with patchy black ice could cause slippery travel early this morning. Motorists and pedestrians should use extra caution. Reduce speed, allow extra time, and be prepared for slippery travel.


Winter Weather Advisory issued January 18 at 1:18AM EST until January 19 at 12:00AM EST by NWS Upton NY

Effective: Sun January 18, 2026, 1:18 AM
Expires: Sun January 18, 2026, 6:15 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 5 inches. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 7 AM this morning to midnight EST tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...There may be a lull snowfall activity during the afternoon today.

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


Winter Weather Advisory issued January 18 at 5:17AM EST until January 19 at 12:00AM EST by NWS Upton NY

Effective: Sun January 18, 2026, 5:17 AM
Expires: Sun January 18, 2026, 7:00 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 5 inches. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until midnight EST tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...There may be a lull snowfall activity during the afternoon today.

Slow down and use caution while traveling. Check local Department of Transportation information services for the latest road conditions.
Sunday, January 18, 2026

Weather Forecast

Moderate rain
37°F
30.7°F
34.7°F
82%
0.65 in
80%
26%
24.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 15 μg/m3
PM10: 16.97 μg/m3
Carbon Monoxide: 230.75 μg/m3
Nitrogen Dioxide: 29.14 μg/m3
Sulphur Dioxide: 7.25 μg/m3
Ozone: 30.46 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:01 AM
Sunset: 4:51 PM
Daylight: 9 hrs 40 mins
Moonrise: 7:24 AM
Moon Transit: 11:58 AM
Moonset: 4:39 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:26 AM - 3:56 AM
11:28 AM - 1:58 PM

Minor Periods

4:09 PM - 5:39 PM
6:54 AM - 8:24 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Blizzard
30.1°F
26.6°F
28.4°F
84%
1.12 in
62%
40%
32.2 mph
0


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:01 AM
Sunset: 4:52 PM
Daylight: 9 hrs 41 mins
Moonrise: 7:57 AM
Moon Transit: 12:47 AM
Moonset: 5:46 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

2:16 AM - 4:46 AM
12:17 AM - 2:47 PM

Minor Periods

5:16 PM - 6:46 PM
7:27 AM - 8:57 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Light freezing rain
24.6°F
18.4°F
23°F
69%
0.01 in
81%
20%
23 mph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:01 AM
Sunset: 4:53 PM
Daylight: 9 hrs 43 mins
Moonrise: 8:24 AM
Moon Transit: 1:34 PM
Moonset: 6:55 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
1:04 PM - 3:34 PM

Minor Periods

6:25 PM - 7:55 PM
7:54 AM - 9:24 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Cloudy
18.6°F
12.2°F
15.7°F
64%
0 in
0%
8%
27.1 mph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:01 AM
Sunset: 4:55 PM
Daylight: 9 hrs 45 mins
Moonrise: 8:48 AM
Moon Transit: 2:20 PM
Moonset: 8:03 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:51 AM - 6:21 AM
1:50 PM - 4:20 PM

Minor Periods

7:33 PM - 9:03 PM
8:18 AM - 9:48 AM

Action Rating: 2 out of 5

Thursday, January 22, 2026

Weather Forecast

Heavy snow
29.9°F
20.3°F
25°F
79%
0.06 in
83%
49%
15.4 mph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:02 AM
Sunset: 4:56 PM
Daylight: 9 hrs 47 mins
Moonrise: 9:10 AM
Moon Transit: 12:00 AM
Moonset: 9:10 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:35 AM - 7:05 AM

Minor Periods

8:40 PM - 10:10 PM
8:40 AM - 10:10 AM

Action Rating: 3 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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