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4th of July forecast: Will you need sunglasses or a raincoat? Click here to find out Chevron right

New Castle, DE

77°F
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Delaware

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New Castle, DE Weather
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Winter Center
Today Hourly

Daily

 Radar MinuteCast Monthly Air Quality Health & Activities
Heat Advisory

June 30 - August 13

Mon 6/30

87° /76°
55%
Uncomfortably humid with clouds and sun; a thunderstorm in the area late this afternoon; storms can bring flooding downpours and localized damaging wind gusts
alerts

Heat Advisory

12:00 PM Monday - 8:00 PM Monday

RealFeel®98°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindS 8 mph

Tue 7/1

90° /73°
90%
Variably cloudy and humid; breezy in the morning, then showers and a heavier thunderstorm; thunderstorms could bring damaging winds, flash flooding and hail

RealFeel®98°

RealFeel Shade™94°

Max UV Index7 (High)

WindSW 13 mph

Wed 7/2

89° /69°
12%
Less humid with partial sunshine

RealFeel®95°

RealFeel Shade™90°

Max UV Index11 (Extreme)

WindW 7 mph

Thu 7/3

90° /69°
20%
Mostly sunny

RealFeel®95°

RealFeel Shade™88°

Max UV Index11 (Extreme)

WindW 8 mph

Fri 7/4

88° /64°
4%
Sunny and less humid; nice weather to celebrate Independence Day

RealFeel®92°

RealFeel Shade™85°

Max UV Index11 (Extreme)

WindWNW 9 mph

Sat 7/5

86° /69°
17%
Plenty of sun

RealFeel®92°

RealFeel Shade™84°

Max UV Index11 (Extreme)

WindS 7 mph

Sun 7/6

91° /72°
15%
Hot and humid with times of clouds and sun

RealFeel®98°

RealFeel Shade™92°

Max UV Index11 (Extreme)

WindSSW 9 mph

Mon 7/7

90° /74°
17%
Cloudy and humid

RealFeel®97°

RealFeel Shade™95°

Max UV Index4 (Moderate)

WindSSW 9 mph

Tue 7/8

92° /72°
72%
Cloudy, hot and humid with a couple of thunderstorms, especially early in the day

RealFeel®99°

RealFeel Shade™96°

Max UV Index5 (Moderate)

WindSW 7 mph

Wed 7/9

89° /70°
80%
Cloudy and humid; rain and a thunderstorm in the morning followed by a couple of thunderstorms in the afternoon

RealFeel®94°

RealFeel Shade™92°

Max UV Index2 (Low)

WindE 6 mph

Thu 7/10

87° /69°
55%
Mostly cloudy; a thunderstorm in spots in the morning followed by a little rain in the afternoon

RealFeel®94°

RealFeel Shade™87°

Max UV Index5 (Moderate)

WindE 5 mph

Fri 7/11

85° /70°
55%
Mostly cloudy with occasional rain

RealFeel®93°

RealFeel Shade™85°

Max UV Index10 (Very High)

WindSE 5 mph

Sat 7/12

84° /71°
74%
Humid with a blend of sun and clouds; a morning shower in spots followed by a couple of thunderstorms in the afternoon

RealFeel®92°

RealFeel Shade™86°

Max UV Index11 (Extreme)

WindSSW 6 mph

Sun 7/13

83° /63°
25%
Cloudy

RealFeel®88°

RealFeel Shade™85°

Max UV Index3 (Moderate)

WindS 4 mph

Mon 7/14

84° /70°
5%
Plenty of sun

RealFeel®92°

RealFeel Shade™85°

Max UV Index10 (Very High)

WindSSE 4 mph

Tue 7/15

87° /71°
5%
Brilliant sunshine

RealFeel®97°

RealFeel Shade™91°

Max UV Index10 (Very High)

WindS 2 mph

Wed 7/16

86° /71°
10%
Sunny and humid

RealFeel®96°

RealFeel Shade™90°

Max UV Index10 (Very High)

WindS 5 mph

Thu 7/17

87° /70°
58%
A passing shower in the morning; otherwise, humid with clouds to start, then sunshine returns

RealFeel®97°

RealFeel Shade™91°

Max UV Index10 (Very High)

WindW 6 mph

Fri 7/18

84° /68°
20%
Mostly sunny and less humid

RealFeel®91°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindNW 6 mph

Sat 7/19

84° /71°
55%
Mostly cloudy; a shower in spots in the morning followed by a little rain in the afternoon

RealFeel®85°

RealFeel Shade™85°

Max UV Index5 (Moderate)

WindWSW 7 mph

Sun 7/20

86° /66°
25%
Less humid with clouds and sun

RealFeel®85°

RealFeel Shade™83°

Max UV Index5 (Moderate)

WindNW 7 mph

Mon 7/21

83° /65°
20%
Mostly sunny

RealFeel®89°

RealFeel Shade™80°

Max UV Index10 (Very High)

WindNW 5 mph

Tue 7/22

83° /66°
5%
Sunny

RealFeel®90°

RealFeel Shade™81°

Max UV Index10 (Very High)

WindSSW 4 mph

Wed 7/23

86° /71°
5%
Sunny

RealFeel®93°

RealFeel Shade™87°

Max UV Index10 (Very High)

WindSSW 8 mph

Thu 7/24

88° /71°
40%
Humid with intervals of clouds and sunshine; a thunderstorm in spots in the morning followed by a thundershower in spots in the afternoon

RealFeel®94°

RealFeel Shade™92°

Max UV Index4 (Moderate)

WindS 5 mph

Fri 7/25

84° /70°
25%
Rather cloudy

RealFeel®87°

RealFeel Shade™84°

Max UV Index3 (Moderate)

WindNNE 5 mph

Sat 7/26

84° /68°
10%
Abundant sunshine

RealFeel®90°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindNW 6 mph

Sun 7/27

83° /66°
20%
Less humid with plenty of sunshine

RealFeel®89°

RealFeel Shade™81°

Max UV Index10 (Very High)

WindENE 5 mph

Mon 7/28

85° /72°
20%
Partly sunny

RealFeel®89°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindS 9 mph

Tue 7/29

88° /71°
10%
Mostly sunny and humid

RealFeel®98°

RealFeel Shade™91°

Max UV Index10 (Very High)

WindWNW 5 mph

Wed 7/30

87° /71°
65%
A couple of showers and a thunderstorm in the morning; otherwise, mostly cloudy and humid

RealFeel®94°

RealFeel Shade™93°

Max UV Index4 (Moderate)

WindNE 5 mph

Thu 7/31

84° /70°
25%
Partly sunny and humid

RealFeel®94°

RealFeel Shade™89°

Max UV Index7 (High)

WindSW 4 mph

Fri 8/1

86° /71°
56%
A thunderstorm in the morning; otherwise, humid with intervals of clouds and sun

RealFeel®94°

RealFeel Shade™91°

Max UV Index9 (Very High)

WindESE 2 mph

Sat 8/2

83° /70°
20%
Humid with sunshine and a few clouds

RealFeel®93°

RealFeel Shade™87°

Max UV Index9 (Very High)

WindNW 2 mph

Sun 8/3

84° /71°
10%
Mostly sunny and humid

RealFeel®95°

RealFeel Shade™90°

Max UV Index9 (Very High)

WindSE 2 mph

Mon 8/4

86° /71°
20%
Humid with sun and some clouds

RealFeel®93°

RealFeel Shade™89°

Max UV Index8 (Very High)

WindENE 5 mph

Tue 8/5

86° /70°
25%
Humid with sunshine and some clouds

RealFeel®97°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindENE 1 mph

Wed 8/6

87° /71°
39%
Mostly sunny and very humid; a thunderstorm in spots in the afternoon

RealFeel®97°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindSSE 4 mph

Thu 8/7

87° /71°
55%
A morning thundershower; otherwise, very humid with times of clouds and sun

RealFeel®96°

RealFeel Shade™93°

Max UV Index5 (Moderate)

WindS 6 mph

Fri 8/8

88° /70°
25%
Humid with times of clouds and sun

RealFeel®93°

RealFeel Shade™90°

Max UV Index6 (High)

WindNW 6 mph

Sat 8/9

83° /69°
20%
Turning cloudy

RealFeel®89°

RealFeel Shade™85°

Max UV Index9 (Very High)

WindENE 7 mph

Sun 8/10

84° /70°
40%
Mostly cloudy and very humid with a thundershower in spots

RealFeel®92°

RealFeel Shade™91°

Max UV Index3 (Moderate)

WindSSE 5 mph

Mon 8/11

83° /67°
0%
Mostly sunny

RealFeel®88°

RealFeel Shade™81°

Max UV Index9 (Very High)

WindESE 5 mph

Tue 8/12

82° /64°
55%
Mostly cloudy with a little rain

RealFeel®81°

RealFeel Shade™80°

Max UV Index7 (High)

WindSSE 14 mph

Wed 8/13

82° /65°
1%
Partly sunny

RealFeel®83°

RealFeel Shade™79°

Max UV Index9 (Very High)

WindWNW 9 mph

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