Water Temperature of the Delaware River in New Castle, DE

Current Water Temperature

78.8°F

Measurement Time: Sunday, September 6, 2026, 10:09 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

78°F

Conditions: Mostly Sunny

Humidity: 56%

Wind: N 10 mph

Dew Point: 61°F

Weather Forecast

This Afternoon
80°F - Mostly Sunny

Tonight
64°F - Partly Cloudy

Labor Day
80°F - Mostly Sunny

Monday Night
62°F - Partly Cloudy

Tuesday
82°F - Sunny

Tuesday Night
66°F - Partly Cloudy

Wednesday
85°F - Mostly Sunny

Wednesday Night
73°F - Mostly Clear

Thursday
86°F - Mostly Sunny then Slight Chance Showers And Thunderstorms

Thursday Night
67°F - Slight Chance Showers And Thunderstorms then Partly Cloudy

Friday
79°F - Mostly Sunny

Friday Night
62°F - Mostly Clear

Saturday
80°F - Sunny

Saturday Night
65°F - Mostly Clear

Astronomical

Sunrise: 6:35 AM
Sun Transit: 1:00 PM
Sunset: 7:25 PM
Daylight: 12 hrs 50 mins

Moonrise: 12:59 AM
Moon Transit: 9:00 AM
Moonset: 4:52 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
12:00 AM - 12:00 AM

Minor Periods

4:22 PM - 5:52 PM
12:29 AM - 1:59 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:35 AM
Sun Transit: 1:00 PM
Sunset: 7:25 PM
Daylight: 12 hrs 50 mins

Moonrise: 12:59 AM
Moon Transit: 9:00 AM
Moonset: 4:52 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
12:00 AM - 12:00 AM

Minor Periods

4:22 PM - 5:52 PM
12:29 AM - 1:59 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:35 AM
Sun Transit: 1:00 PM
Sunset: 7:25 PM
Daylight: 12 hrs 50 mins

Moonrise: 12:59 AM
Moon Transit: 9:00 AM
Moonset: 4:52 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
12:00 AM - 12:00 AM

Minor Periods

4:22 PM - 5:52 PM
12:29 AM - 1:59 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:36 AM
Sun Transit: 1:00 PM
Sunset: 7:23 PM
Daylight: 12 hrs 47 mins

Moonrise: 2:13 AM
Moon Transit: 10:00 AM
Moonset: 5:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

5:04 PM - 6:34 PM
1:43 AM - 3:13 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:36 AM
Sun Transit: 1:00 PM
Sunset: 7:23 PM
Daylight: 12 hrs 47 mins

Moonrise: 2:13 AM
Moon Transit: 10:00 AM
Moonset: 5:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

5:04 PM - 6:34 PM
1:43 AM - 3:13 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:37 AM
Sun Transit: 1:00 PM
Sunset: 7:22 PM
Daylight: 12 hrs 45 mins

Moonrise: 3:30 AM
Moon Transit: 10:55 AM
Moonset: 6:08 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:25 AM - 12:55 AM

Minor Periods

5:38 PM - 7:08 PM
3:00 AM - 4:30 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:37 AM
Sun Transit: 1:00 PM
Sunset: 7:22 PM
Daylight: 12 hrs 45 mins

Moonrise: 3:30 AM
Moon Transit: 10:55 AM
Moonset: 6:08 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:25 AM - 12:55 AM

Minor Periods

5:38 PM - 7:08 PM
3:00 AM - 4:30 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:38 AM
Sun Transit: 1:00 PM
Sunset: 7:20 PM
Daylight: 12 hrs 42 mins

Moonrise: 4:45 AM
Moon Transit: 11:47 AM
Moonset: 6:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:51 AM - 3:21 AM
11:17 AM - 1:47 PM

Minor Periods

6:06 PM - 7:36 PM
4:15 AM - 5:45 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:38 AM
Sun Transit: 1:00 PM
Sunset: 7:20 PM
Daylight: 12 hrs 42 mins

Moonrise: 4:45 AM
Moon Transit: 11:47 AM
Moonset: 6:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:51 AM - 3:21 AM
11:17 AM - 1:47 PM

Minor Periods

6:06 PM - 7:36 PM
4:15 AM - 5:45 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:39 AM
Sun Transit: 1:00 PM
Sunset: 7:18 PM
Daylight: 12 hrs 40 mins

Moonrise: 5:58 AM
Moon Transit: 12:35 AM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:41 AM - 4:11 AM
12:05 AM - 2:35 PM

Minor Periods

6:31 PM - 8:01 PM
5:28 AM - 6:58 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:39 AM
Sun Transit: 1:00 PM
Sunset: 7:18 PM
Daylight: 12 hrs 40 mins

Moonrise: 5:58 AM
Moon Transit: 12:35 AM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:41 AM - 4:11 AM
12:05 AM - 2:35 PM

Minor Periods

6:31 PM - 8:01 PM
5:28 AM - 6:58 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:40 AM
Sun Transit: 12:58 AM
Sunset: 7:17 PM
Daylight: 12 hrs 37 mins

Moonrise: 7:08 AM
Moon Transit: 1:21 PM
Moonset: 7:24 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
12:51 AM - 3:21 PM

Minor Periods

6:54 PM - 8:24 PM
6:38 AM - 8:08 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:40 AM
Sun Transit: 12:58 AM
Sunset: 7:17 PM
Daylight: 12 hrs 37 mins

Moonrise: 7:08 AM
Moon Transit: 1:21 PM
Moonset: 7:24 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
12:51 AM - 3:21 PM

Minor Periods

6:54 PM - 8:24 PM
6:38 AM - 8:08 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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

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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