Water Temperature of the Delaware River in New Castle, DE

Current Water Temperature

72.5°F

Measurement Time: Wednesday, June 10, 2026, 3:03 AM EDT

Temperature Locations

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Local Points of Interest

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

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

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 mi)
Delaware River, Middletown, DE (13.2 mi)
White Clay Creek, Landenberg, PA (13.8 mi)

Weather for New Castle, Delaware

Current Weather

69.1°F
Partly cloudy
Partly cloudy
69.1°F
74.4°F
78%
S 4.7 mph
8.3 mph
71.2°F
65°F
0 in
75%
9 mi
1016 mbar
0.3

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 89°F
L: 67°F
Patchy rain nearby
Thu
H: 92°F
L: 71°F
Partly Cloudy
Fri
H: 95°F
L: 70°F
Patchy rain nearby
Sat
H: 85°F
L: 69°F
Sunny
Sun
H: 88°F
L: 65°F

Air Quality

AQI: 1 - Good
PM2.5: 5.7 μg/m3
PM10: 7.4 μg/m3
Carbon Monoxide: 117 μg/m3
Nitrogen Dioxide: 6.3 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 56 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 1:01 PM
Sunset: 8:30 PM
Daylight: 14 hrs 56 mins
Moonrise: 2:02 AM
Moon Transit: 8:40 AM
Moonset: 3:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:10 AM - 10:40 AM
12:00 AM - 12:00 AM

Minor Periods

3:00 PM - 4:30 PM
1:32 AM - 3:02 AM

Action Rating: 2 out of 5

Heat Advisory issued June 10 at 2:24AM EDT until June 12 at 8:00PM EDT by NWS Mount Holly NJ

Effective: Wed June 10, 2026, 2:24 AM
Expires: Wed June 10, 2026, 4:00 PM

* WHAT...Heat index values up to 103 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...From 11 AM Thursday to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. If you do not have air conditioning in your home or lack shelter, you can call 211, or visit your county or state health department website for assistance locating appropriate shelter from the heat.


Heat Advisory issued June 10 at 2:24AM EDT until June 12 at 8:00PM EDT by NWS Mount Holly NJ

Effective: Wed June 10, 2026, 2:24 AM
Expires: Wed June 10, 2026, 4:00 PM

* WHAT...Heat index values up to 101 degrees expected. * WHERE...Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...From 11 AM Thursday to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Wednesday, June 10, 2026

Weather Forecast

Patchy rain nearby
88.5°F
67.1°F
75.9°F
76%
0.08 in
57%
0%
10.7 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 7.33 μg/m3
PM10: 8.94 μg/m3
Carbon Monoxide: 131.75 μg/m3
Nitrogen Dioxide: 4.5 μg/m3
Sulphur Dioxide: 0.84 μg/m3
Ozone: 91.54 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 1:01 PM
Sunset: 8:30 PM
Daylight: 14 hrs 56 mins
Moonrise: 2:02 AM
Moon Transit: 8:40 AM
Moonset: 3:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:10 AM - 10:40 AM
12:00 AM - 12:00 AM

Minor Periods

3:00 PM - 4:30 PM
1:32 AM - 3:02 AM

Action Rating: 2 out of 5

Thursday, June 11, 2026

Weather Forecast

Patchy rain nearby
91.6°F
70.6°F
79.5°F
78%
0.05 in
57%
0%
15.9 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 6.52 μg/m3
PM10: 6.78 μg/m3
Carbon Monoxide: 152.17 μg/m3
Nitrogen Dioxide: 7.47 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 85.42 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 1:01 PM
Sunset: 8:30 PM
Daylight: 14 hrs 57 mins
Moonrise: 2:29 AM
Moon Transit: 9:30 AM
Moonset: 4:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:00 AM - 11:30 AM

Minor Periods

4:16 PM - 5:46 PM
1:59 AM - 3:29 AM

Action Rating: 2 out of 5

Friday, June 12, 2026

Weather Forecast

Partly Cloudy
94.6°F
69.5°F
81.8°F
67%
0 in
17%
0%
8.9 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 6.71 μg/m3
PM10: 6.93 μg/m3
Carbon Monoxide: 181.58 μg/m3
Nitrogen Dioxide: 9.08 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 82.96 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:02 PM
Sunset: 8:31 PM
Daylight: 14 hrs 57 mins
Moonrise: 3:01 AM
Moon Transit: 10:25 AM
Moonset: 6:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:55 AM - 12:25 AM

Minor Periods

5:34 PM - 7:04 PM
2:31 AM - 4:01 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Patchy rain nearby
85°F
69.2°F
77.3°F
63%
0.17 in
57%
0%
13.6 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 4.5 μg/m3
PM10: 4.93 μg/m3
Carbon Monoxide: 150.55 μg/m3
Nitrogen Dioxide: 6 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 81.71 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:02 PM
Sunset: 8:31 PM
Daylight: 14 hrs 58 mins
Moonrise: 3:40 AM
Moon Transit: 11:27 AM
Moonset: 7:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:26 AM - 2:56 AM
10:57 AM - 1:27 PM

Minor Periods

6:54 PM - 8:24 PM
3:10 AM - 4:40 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Sunny
87.5°F
64.7°F
74.3°F
55%
0 in
3%
0%
9.8 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 9.32 μg/m3
PM10: 9.54 μg/m3
Carbon Monoxide: 226.56 μg/m3
Nitrogen Dioxide: 24.58 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 31.56 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:02 PM
Sunset: 8:32 PM
Daylight: 14 hrs 58 mins
Moonrise: 4:32 AM
Moon Transit: 12:33 AM
Moonset: 8:39 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:31 AM - 4:01 AM
12:03 AM - 2:33 PM

Minor Periods

8:09 PM - 9:39 PM
4:02 AM - 5:32 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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