Water Temperature of the Delaware River in New Castle, DE

Current Water Temperature

78.8°F

Measurement Time: Saturday, September 12, 2026, 12:33 PM 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

79°F
Partly Sunny
Partly Sunny
60%
SE 10 mph
64°F

Weather Forecast

Partly Sunny
This Afternoon
81°F - Partly Sunny
Chance Showers And Thunderstorms
Tonight
72°F - Chance Showers And Thunderstorms
Patchy Fog then Partly Sunny
Sunday
84°F - Patchy Fog then Partly Sunny
Partly Cloudy
Sunday Night
71°F - Partly Cloudy
Mostly Sunny
Monday
76°F - Mostly Sunny
Mostly Clear
Monday Night
57°F - Mostly Clear
Sunny
Tuesday
77°F - Sunny
Mostly Clear
Tuesday Night
60°F - Mostly Clear
Sunny
Wednesday
80°F - Sunny
Mostly Clear
Wednesday Night
64°F - Mostly Clear
Sunny
Thursday
83°F - Sunny
Mostly Clear
Thursday Night
67°F - Mostly Clear
Mostly Sunny then Chance Rain Showers
Friday
83°F - Mostly Sunny then Chance Rain Showers
Chance Rain Showers
Friday Night
65°F - Chance Rain Showers

Astronomical

Sunrise: 6:41 AM
Sun Transit: 12:58 AM
Sunset: 7:15 PM
Daylight: 12 hrs 35 mins
Moonrise: 8:16 AM
Moon Transit: 2:07 PM
Moonset: 7:48 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:14 AM - 5:44 AM
1:37 PM - 4:07 PM

Minor Periods

7:18 PM - 8:48 PM
7:46 AM - 9:16 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:41 AM
Sun Transit: 12:58 AM
Sunset: 7:15 PM
Daylight: 12 hrs 35 mins
Moonrise: 8:16 AM
Moon Transit: 2:07 PM
Moonset: 7:48 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:14 AM - 5:44 AM
1:37 PM - 4:07 PM

Minor Periods

7:18 PM - 8:48 PM
7:46 AM - 9:16 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:41 AM
Sun Transit: 12:58 AM
Sunset: 7:15 PM
Daylight: 12 hrs 35 mins
Moonrise: 8:16 AM
Moon Transit: 2:07 PM
Moonset: 7:48 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:14 AM - 5:44 AM
1:37 PM - 4:07 PM

Minor Periods

7:18 PM - 8:48 PM
7:46 AM - 9:16 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:42 AM
Sun Transit: 12:57 AM
Sunset: 7:14 PM
Daylight: 12 hrs 32 mins
Moonrise: 9:23 AM
Moon Transit: 2:52 PM
Moonset: 8:12 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

3:58 AM - 6:28 AM
2:22 PM - 4:52 PM

Minor Periods

7:42 PM - 9:12 PM
8:53 AM - 10:23 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:42 AM
Sun Transit: 12:57 AM
Sunset: 7:14 PM
Daylight: 12 hrs 32 mins
Moonrise: 9:23 AM
Moon Transit: 2:52 PM
Moonset: 8:12 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

3:58 AM - 6:28 AM
2:22 PM - 4:52 PM

Minor Periods

7:42 PM - 9:12 PM
8:53 AM - 10:23 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:43 AM
Sun Transit: 12:57 AM
Sunset: 7:12 PM
Daylight: 12 hrs 29 mins
Moonrise: 10:29 AM
Moon Transit: 3:38 PM
Moonset: 8:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:44 AM - 7:14 AM
3:08 PM - 5:38 PM

Minor Periods

8:10 PM - 9:40 PM
9:59 AM - 11:29 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:43 AM
Sun Transit: 12:57 AM
Sunset: 7:12 PM
Daylight: 12 hrs 29 mins
Moonrise: 10:29 AM
Moon Transit: 3:38 PM
Moonset: 8:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:44 AM - 7:14 AM
3:08 PM - 5:38 PM

Minor Periods

8:10 PM - 9:40 PM
9:59 AM - 11:29 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:43 AM
Sun Transit: 12:57 AM
Sunset: 7:10 PM
Daylight: 12 hrs 27 mins
Moonrise: 11:35 AM
Moon Transit: 4:25 PM
Moonset: 9:10 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

5:31 AM - 8:01 AM
3:55 PM - 6:25 PM

Minor Periods

8:40 PM - 10:10 PM
11:05 AM - 12:35 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:43 AM
Sun Transit: 12:57 AM
Sunset: 7:10 PM
Daylight: 12 hrs 27 mins
Moonrise: 11:35 AM
Moon Transit: 4:25 PM
Moonset: 9:10 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

5:31 AM - 8:01 AM
3:55 PM - 6:25 PM

Minor Periods

8:40 PM - 10:10 PM
11:05 AM - 12:35 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:44 AM
Sun Transit: 12:56 AM
Sunset: 7:09 PM
Daylight: 12 hrs 24 mins
Moonrise: 12:39 AM
Moon Transit: 5:14 PM
Moonset: 9:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

6:19 AM - 8:49 AM
4:44 PM - 7:14 PM

Minor Periods

9:17 PM - 10:47 PM
12:09 AM - 1:39 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:44 AM
Sun Transit: 12:56 AM
Sunset: 7:09 PM
Daylight: 12 hrs 24 mins
Moonrise: 12:39 AM
Moon Transit: 5:14 PM
Moonset: 9:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

6:19 AM - 8:49 AM
4:44 PM - 7:14 PM

Minor Periods

9:17 PM - 10:47 PM
12:09 AM - 1:39 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:45 AM
Sun Transit: 12:56 AM
Sunset: 7:07 PM
Daylight: 12 hrs 22 mins
Moonrise: 1:39 PM
Moon Transit: 6:05 PM
Moonset: 10:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:10 AM - 9:40 AM
5:35 PM - 8:05 PM

Minor Periods

10:01 PM - 11:31 PM
1:09 PM - 2:39 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:45 AM
Sun Transit: 12:56 AM
Sunset: 7:07 PM
Daylight: 12 hrs 22 mins
Moonrise: 1:39 PM
Moon Transit: 6:05 PM
Moonset: 10:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:10 AM - 9:40 AM
5:35 PM - 8:05 PM

Minor Periods

10:01 PM - 11:31 PM
1:09 PM - 2:39 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:46 AM
Sun Transit: 12:56 AM
Sunset: 7:06 PM
Daylight: 12 hrs 19 mins
Moonrise: 2:34 PM
Moon Transit: 6:57 PM
Moonset: 11:21 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

8:01 AM - 10:31 AM
6:27 PM - 8:57 PM

Minor Periods

12:00 AM - 12:00 AM
2:04 PM - 3:34 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:46 AM
Sun Transit: 12:56 AM
Sunset: 7:06 PM
Daylight: 12 hrs 19 mins
Moonrise: 2:34 PM
Moon Transit: 6:57 PM
Moonset: 11:21 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

8:01 AM - 10:31 AM
6:27 PM - 8:57 PM

Minor Periods

12:00 AM - 12:00 AM
2:04 PM - 3:34 PM

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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