Water Temperature of the Delaware River in New Castle, DE

Current Water Temperature

73.6°F

Measurement Time: Wednesday, September 10, 2025, 6:33 AM EDT

Temperature Locations

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Local Points of Interest

Delaware Memorial Bridge; Wilmington, DE; Pennsville Township, NJ

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Delaware River

Station Name: DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DE
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
I-295
New Castle, DE 19720
New Castle County

GPS Coordinates: 39.68927997, -75.521588

Nearby Water Temperatures

Christina River, Wilmington, DE (3.4 mi)
Christina River, Newport, DE (4.9 mi)
Brandywine Creek, Wilmington, DE (6.3 mi)
White Clay Creek, Stanton, DE (6.7 mi)
Red Clay Creek, Wooddale, DE (7.9 mi)
White Clay Creek, Newark, DE (8.2 mi)
Pike Creek, Newark, DE (9.3 mi)
Chesapeake & Delaware Canal, Port Penn, DE (9.4 mi)
Delaware River, Marcus Hook, PA (10.3 mi)
Chesapeake and Delaware Canal, Delaware City, DE (10.7 mi)
Christina River, Newark, DE (11.5 mi)
White Clay Creek, Newark, DE (12.1 mi)
Brandywine Creek, Chadds Ford, PA (13.0 mi)
Delaware River, Middletown, DE (13.2 mi)
White Clay Creek, Landenberg, PA (13.8 mi)

Weather for New Castle, Delaware

Current Weather

66.9°F
Overcast
Conditions: Overcast
Humidity: 73%
Feels Like: 66.9°F
Wind: NNE 10.3 mph
Wind Gusts: 14.4 mph
Pressure: 30.18 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0.5

Five Day Weather Forecast

Overcast
Wed
H: 68°F
L: 61°F
Overcast
Thu
H: 73°F
L: 62°F
Overcast
Fri
H: 78°F
L: 64°F
Sunny
Sat
H: 80°F
L: 60°F
Patchy rain nearby
Sun
H: 84°F
L: 64°F

Air Quality

AQI: 2 - Moderate
PM2.5: 16.84 μg/m3
PM10: 17.21 μg/m3
Carbon Monoxide: 336.7 μg/m3
Nitrogen Dioxide: 24.79 μg/m3
Sulphur Dioxide: 7.22 μg/m3
Ozone: 47 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:58 AM
Sunset: 7:18 PM
Daylight: 12 hrs 39 mins
Moonrise: 8:44 PM
Moon Transit: 3:00 AM
Moonset: 10:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

2:30 AM - 5:00 AM
4:56 PM - 7:26 PM

Minor Periods

8:14 PM - 9:44 PM
9:30 AM - 11:00 AM

Action Rating: 3 out of 5

Coastal Flood Advisory issued September 10 at 6:38AM EDT until September 10 at 4:00PM EDT by NWS Mount Holly NJ

Effective: Wed September 10, 2025, 6:38 AM
Expires: Wed September 10, 2025, 4:00 PM

* WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...In Delaware, New Castle. In New Jersey, Salem. * WHEN...Until 4 PM EDT this afternoon. * IMPACTS...At this level, flooding begins on the most vulnerable roads along tidal waterways. Some partial or full road closures are possible.

A Coastal Flood Advisory means that minor tidal flooding is expected. Minor tidal flooding often results in some road closures. Usually, the most vulnerable roadways will flood. Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge.


Coastal Flood Advisory issued September 10 at 6:38AM EDT until September 10 at 4:00PM EDT by NWS Mount Holly NJ

Effective: Wed September 10, 2025, 6:38 AM
Expires: Wed September 10, 2025, 4:00 PM

* WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...In Delaware, New Castle. In New Jersey, Salem. * WHEN...Until 4 PM EDT this afternoon. * IMPACTS...At this level, flooding begins on the most vulnerable roads along tidal waterways. Some partial or full road closures are possible.

A Coastal Flood Advisory means that minor tidal flooding is expected. Minor tidal flooding often results in some road closures. Usually, the most vulnerable roadways will flood. Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge.


Coastal Flood Advisory issued September 10 at 6:38AM EDT until September 10 at 3:00PM EDT by NWS Mount Holly NJ

Effective: Wed September 10, 2025, 6:38 AM
Expires: Wed September 10, 2025, 3:00 PM

* WHAT...Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE...Cumberland, Atlantic and Cape May. * WHEN...Until 3 PM EDT this afternoon. * IMPACTS...At this level, flooding begins on the most vulnerable roads in coastal and bayside communities, and along inland tidal waterways. Some partial or full road closures are possible.

A Coastal Flood Advisory means that minor tidal flooding is expected. Minor tidal flooding often results in some road closures. Usually, the most vulnerable roadways will flood. Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge.


Coastal Flood Advisory issued September 10 at 6:38AM EDT until September 10 at 3:00PM EDT by NWS Mount Holly NJ

Effective: Wed September 10, 2025, 6:38 AM
Expires: Wed September 10, 2025, 3:00 PM

* WHAT...Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE...Kent and Inland Sussex. * WHEN...Until 3 PM EDT this afternoon. * IMPACTS...At this level, flooding begins on the most vulnerable roads in coastal and bayside communities, and along inland tidal waterways. Some partial or full road closures are possible.

A Coastal Flood Advisory means that minor tidal flooding is expected. Minor tidal flooding often results in some road closures. Usually, the most vulnerable roadways will flood. Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge.


Coastal Flood Advisory issued September 10 at 6:38AM EDT until September 10 at 3:00PM EDT by NWS Mount Holly NJ

Effective: Wed September 10, 2025, 6:38 AM
Expires: Wed September 10, 2025, 3:00 PM

* WHAT...Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE...Cumberland, Atlantic and Cape May. * WHEN...Until 3 PM EDT this afternoon. * IMPACTS...At this level, flooding begins on the most vulnerable roads in coastal and bayside communities, and along inland tidal waterways. Some partial or full road closures are possible.

A Coastal Flood Advisory means that minor tidal flooding is expected. Minor tidal flooding often results in some road closures. Usually, the most vulnerable roadways will flood. Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge.


Wednesday, September 10, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 63.6°F
Average Humidity: 89%
Chance of Rain: 0%
Wind: 10.5 mph
UV Index: 0.3

Air Quality

AQI: 2 - Moderate
PM2.5: 15.88 μg/m3
PM10: 17.1 μg/m3
Carbon Monoxide: 365.41 μg/m3
Nitrogen Dioxide: 26.57 μg/m3
Sulphur Dioxide: 7.06 μg/m3
Ozone: 53.88 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:58 AM
Sunset: 7:18 PM
Daylight: 12 hrs 39 mins
Moonrise: 8:44 PM
Moon Transit: 3:00 AM
Moonset: 10:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

2:30 AM - 5:00 AM
4:56 PM - 7:26 PM

Minor Periods

8:14 PM - 9:44 PM
9:30 AM - 11:00 AM

Action Rating: 3 out of 5

Thursday, September 11, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 68°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 5.4 mph
UV Index: 0.9

Air Quality

AQI: 2 - Moderate
PM2.5: 17.92 μg/m3
PM10: 18.29 μg/m3
Carbon Monoxide: 445.55 μg/m3
Nitrogen Dioxide: 29.56 μg/m3
Sulphur Dioxide: 8.7 μg/m3
Ozone: 62.32 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:58 AM
Sunset: 7:16 PM
Daylight: 12 hrs 36 mins
Moonrise: 9:17 PM
Moon Transit: 3:53 AM
Moonset: 11:17 AM
Moon Phase: Waning Gibbous
Moon Illumination: 77.5%

Best Times for Fishing or Hunting

Major Periods

3:23 AM - 5:53 AM
5:51 PM - 8:21 PM

Minor Periods

8:47 PM - 10:17 PM
10:47 AM - 12:17 AM

Action Rating: 2 out of 5

Friday, September 12, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 70.2°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 8.7 mph
UV Index: 1.5

Air Quality

AQI: 2 - Moderate
PM2.5: 25.85 μg/m3
PM10: 26.01 μg/m3
Carbon Monoxide: 438.75 μg/m3
Nitrogen Dioxide: 43.29 μg/m3
Sulphur Dioxide: 6.46 μg/m3
Ozone: 69.28 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 12:58 AM
Sunset: 7:15 PM
Daylight: 12 hrs 34 mins
Moonrise: 9:57 PM
Moon Transit: 4:49 AM
Moonset: 12:35 AM
Moon Phase: Waning Gibbous
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
6:50 PM - 9:20 PM

Minor Periods

9:27 PM - 10:57 PM
12:05 AM - 1:35 PM

Action Rating: 4 out of 5

Saturday, September 13, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 69.2°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 10.7 mph
UV Index: 1.4

Air Quality

AQI: 2 - Moderate
PM2.5: 23.72 μg/m3
PM10: 27.42 μg/m3
Carbon Monoxide: 420.17 μg/m3
Nitrogen Dioxide: 26.74 μg/m3
Sulphur Dioxide: 4.63 μg/m3
Ozone: 76.84 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:57 AM
Sunset: 7:13 PM
Daylight: 12 hrs 31 mins
Moonrise: 10:47 PM
Moon Transit: 5:49 AM
Moonset: 1:50 PM
Moon Phase: Waning Gibbous
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

5:19 AM - 7:49 AM
7:51 PM - 10:21 PM

Minor Periods

10:17 PM - 11:47 PM
1:20 PM - 2:50 PM

Action Rating: 2 out of 5

Sunday, September 14, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 71.5°F
Average Humidity: 67%
Chance of Rain: 88%
Wind: 8.3 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 19.38 μg/m3
PM10: 22.63 μg/m3
Carbon Monoxide: 382.52 μg/m3
Nitrogen Dioxide: 33.04 μg/m3
Sulphur Dioxide: 3.2 μg/m3
Ozone: 55.08 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 12:57 AM
Sunset: 7:12 PM
Daylight: 12 hrs 29 mins
Moonrise: 11:46 PM
Moon Transit: 6:51 AM
Moonset: 2:58 PM
Moon Phase: Last Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

6:21 AM - 8:51 AM
8:53 PM - 11:23 PM

Minor Periods

12:00 AM - 12:00 AM
2:28 PM - 3:58 PM

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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