Weather in New Castle

14-day forecast · updated today, Thursday, October 29, at 7:14 am (EDT)

Now · clear 44 °F

Feels like: 38 °F
Low / high: 43 / 66 °F
Rain: 1%
Wind: 7 mph SW

→ 30.24 inHg · steady

Today in New Castle: mainly clear, 43 °F to 66 °F, with a 1% chance of rain and a light breeze from the southwest (7 mph). Tomorrow, overcast, 47 °F to 65 °F and a 6% chance of rain. The warmest day of the week is Thursday 29, at 66 °F. Next likely rain: Thursday 5 (31%).

Temperatures for the next 14 days

66° 43°
Today
65° 47°
Fri 30
53° 37°
Sat 31
58° 32°
Sun 1
64° 40°
Mon 2
60° 45°
Tue 3
63° 49°
Wed 4
62° 50°
Thu 5
61° 49°
Fri 6
56° 44°
Sat 7
55° 40°
Sun 8
59° 40°
Mon 9
58° 44°
Tue 10
54° 49°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Mainly clear	43 / 66 °F	1%	12 mph SW	1.9 ft	1:44 am · 1:53 pm	HRRR
Fri 30	Overcast	47 / 65 °F	6%	11 mph W	1.9 ft	2:38 am · 2:47 pm	HRRR + NBM
Sat 31	Clear sky	37 / 53 °F	0%	9 mph NW	1.4 ft	3:36 am · 3:48 pm	NBM
Sun 1	Clear sky	32 / 58 °F	0%	5 mph WSW	0.7 ft	3:41 am · 3:54 pm	NBM
Mon 2	Overcast	40 / 64 °F	2%	6 mph WSW	1.1 ft	4:48 am · 5:04 pm	NBM
Tue 3	Overcast	45 / 60 °F	12%	6 mph ENE	1.8 ft	5:54 am · 6:14 pm	NBM
Wed 4	Overcast	49 / 63 °F	18%	6 mph SSE	2.3 ft	6:58 am · 7:20 pm	NBM
Thu 5	Overcast	50 / 62 °F	31% · 0.11 in	7 mph SSE	1.8 ft	7:54 am · 8:20 pm	NBM
Fri 6	Light drizzle	49 / 61 °F	44% · 0.97 in	9 mph SSE	5.6 ft	8:44 am · 9:13 pm	NBM
Sat 7	Rain	44 / 56 °F	30% · 0.15 in	8 mph SW	7.8 ft	9:29 am · 10:01 pm	NBM
Sun 8	Overcast	40 / 55 °F	17% · 0.09 in	7 mph NW	5.6 ft	10:11 am · 10:46 pm	NBM
Mon 9	Overcast	40 / 59 °F	17% · 0.01 in	11 mph W	2.5 ft	10:50 am · 11:27 pm	NBM + ECMWF
Tue 10	Light drizzle	44 / 58 °F	18% · 0.03 in	6 mph WSW	1.6 ft	11:27 am	ECMWF
Wed 11	Light drizzle	49 / 54 °F	10% · 0.10 in	6 mph NNE	1.9 ft	12:07 am · 12:04 pm	ECMWF

Each hour comes from the best model for this spot: HRRR until Friday 30 2:00 am; then NBM until Monday 9 2:00 am; then ECMWF until Thursday 12 10:00 pm; then GFS.

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Mainly clear	Clear	Clear sky	Clear sky	Clear sky	Clear	Clear
Temperature	45°	43°	44°	47°	60°	66°	59°	54°
Chance of rain	1%	1%	0%	0%	0%	0%	0%	0%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	7 WSW	7 WSW	8 SW	6 WSW	9 SW	11 SW	8 SW	6 SSW
Humidity	81%	75%	90%	89%	65%	50%	60%	79%
UV	0	0	0	1	3	1	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR

Do the models agree?

High confidence

The models agree for the next few days: the forecast is fairly solid.

What 6 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	67°	62°	50°	56°	67°	56°	52°
AIFS	67°	64°	51°	55°	66°	70°	74°
GFS	67°	65°	53°	57°	67°	55°	53°
ICON	69°	66°	51°	58°	65°	65°	65°
HRRR	66°	62°	—	—	—	—	—
NBM	66°	65°	53°	58°	64°	60°	63°
Confidence	high	high	high	high	high	medium	low

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0	0	0	0	0	0
AIFS	0	0	0	0	0	0	0
GFS	0	0.00 in	0	0	0	0	0
ICON	0	0.02 in	0	0	0	0	0
HRRR	0	0	—	—	—	—	—
NBM	0	0	0	0	0	0	0
Confidence	high	high	high	high	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1020	1330	1227	818	1223	716	620
AIFS	12	12	10	8	9	8	8
GFS	1229	1735	1530	717	920	1316	814
ICON	819	1230	923	718	617	820	617
HRRR	1222	1634	—	—	—	—	—
NBM	1018	1120	916	510	612	612	613
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	0%	29%	0%	0%	2%	20%	26%
GFS (GEFS, 31 scenarios)	0%	35%	0%	0%	4%	23%	26%
NBM (NOAA)	1%	6%	0%	0%	2%	12%	18%
Thunderstorm (NBM)	0%	1%	0%	0%	0%	1%	1%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: a bit warmer, normal rain and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Above +4.1 °F	Normal	A bit above +0.9 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +1.4 °F	Normal	A bit above +1.1 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.2 °F	Normal	A bit above +0.9 °F	48° / 44°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.5 °F	A bit above +29%	A bit above +1.1 °F	47° / 43°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.2 °F	A bit above +26%	A bit above +0.9 °F	45° / 40°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.6 °F	Normal	Above +1.8 °F
December	Above +3.2 °F	Normal	A bit above +1.6 °F
January	Above +4.3 °F	A bit above +41%	Above +1.8 °F
February	Above +3.4 °F	A bit above +31%	Above +2.3 °F
March	Above +3.4 °F	A bit above +24%	Above +2.5 °F

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

New Castle climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit New Castle is from June to September: highs of 71 °F to 81 °F, about 9 rainy days a month and 7 hours of sunshine a day.

Hurricane season: from July to September. In the last 30 years (1996–2025), 3 tropical cyclones passed within 93 mi of New Castle, about one every 10 years. The most recent: Hermine, in August 2004.

36° 18°

JanJ
38° 19°

FebF
44° 26°

MarM
55° 35°

AprA
66° 45°

MayM
75° 54°

JunJ
81° 60°

JulJ
79° 59°

AugA
71° 52°

SepS
61° 41°

OctO
50° 33°

NovN
40° 25°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	36°	18°	3.28 in	8	3.9	42°	3.6 ft	–
FebruaryFeb	38°	19°	3.10 in	7	5.3	39°	3.5 ft	–
MarchMar	44°	26°	4.02 in	9	5.7	39°	3.7 ft	–
AprilApr	55°	35°	4.30 in	8	6.3	42°	3.3 ft	–
MayMay	66°	45°	3.34 in	9	6.5	49°	2.7 ft	–
JuneJun	75°	54°	3.48 in	11	7.1	57°	2.3 ft	–
JulyJul	81°	60°	3.08 in	10	7.8	63°	2.0 ft	1
AugustAug	79°	59°	3.05 in	9	7.5	65°	2.1 ft	1
SeptemberSep	71°	52°	3.39 in	8	6.1	61°	2.9 ft	1
OctoberOct	61°	41°	4.59 in	8	4.3	55°	3.4 ft	–
NovemberNov	50°	33°	4.12 in	8	3.3	49°	3.4 ft	–
DecemberDec	40°	25°	4.20 in	9	3.0	45°	3.5 ft	–

Month	Water	Waves	Cyclones
Jan	42°	3.6 ft	–
Feb	39°	3.5 ft	–
Mar	39°	3.7 ft	–
Apr	42°	3.3 ft	–
May	49°	2.7 ft	–
Jun	57°	2.3 ft	–
Jul	63°	2.0 ft	1
Aug	65°	2.1 ft	1
Sep	61°	2.9 ft	1
Oct	55°	3.4 ft	–
Nov	49°	3.4 ft	–
Dec	45°	3.5 ft	–

Days: rainy days in the month. Sun: hours a day.

A normal year brings 43.95 in of rain on about 104 days and about 2,050 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now44 °Ffeels like 38 °F

Tomorrow47 / 65 °F

It's 44 °F now (feels like 38 °F). Today, 43 °F to 66 °F; tomorrow, 47 °F to 65 °F.

Chance of rain

Today 1%
Fri 30 6%
Sat 31 0%
Sun 1 0%
Mon 2 2%
Tue 3 12%
Wed 4 18%

Today the chance of rain reaches 1%. The next day with likely rain is Thursday 5: 31% and 0.11 in.

No rain in the last 7 days.

Humidity and dew point

Humidity90%

Dew point41 °F

Humidity is 90% now and the dew point is 41 °F. The temperature is very close to the dew point: fog may form.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now8.5 migood

Clouds0%

Visibility is good now (8.5 mi). No fog expected today.

UV index

Now0

Today's peak3low

Fri 30: 2 · Sat 31: 2 · Sun 1: 3

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

30.0030.2030.40 29.89

Steady now (−0.02 inHg in 3 hours). Over the next 48 hours: +0.06 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 31

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Max wind
Wed 28	Overcast	29 / 52 °F	7 mph NE
Tue 27	Overcast	38 / 55 °F	8 mph N
Mon 26	Partly cloudy	37 / 71 °F	9 mph WNW
Sun 25	Clear sky	29 / 64 °F	6 mph WSW
Sat 24	Clear sky	29 / 60 °F	6 mph WNW
Fri 23	Clear sky	39 / 56 °F	10 mph N
Thu 22	Overcast	43 / 64 °F	13 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Overcast	41 / 58 °F	0	10 mph NNE
Tue 20	Overcast	35 / 66 °F	0	11 mph NNE
Mon 19	Partly cloudy	35 / 60 °F	0	5 mph SSW
Sun 18	Clear sky	32 / 55 °F	0	6 mph SW
Sat 17	Overcast	37 / 58 °F	0	14 mph NW
Fri 16	Light rain	41 / 67 °F	0.28 in	13 mph SW
Thu 15	Overcast	42 / 62 °F	0	11 mph NW
Wed 14	Drizzle	47 / 73 °F	0.13 in	11 mph NW
Tue 13	Light rain	47 / 56 °F	0.52 in	11 mph ENE
Mon 12	Light rain	48 / 72 °F	0.18 in	10 mph NNW
Sun 11	Light rain	38 / 55 °F	0.37 in	5 mph SSW
Sat 10	Overcast	44 / 60 °F	0	8 mph WNW
Fri 9	Mainly clear	48 / 65 °F	0	15 mph W
Thu 8	Light drizzle	50 / 69 °F	0.04 in	12 mph WSW
Wed 7	Partly cloudy	39 / 62 °F	0	9 mph SSW
Tue 6	Partly cloudy	45 / 59 °F	0	13 mph WNW
Mon 5	Overcast	51 / 68 °F	0	15 mph WNW
Sun 4	Overcast	44 / 62 °F	0	8 mph ENE
Sat 3	Overcast	50 / 70 °F	0	6 mph N
Fri 2	Drizzle	63 / 83 °F	0.09 in	11 mph WSW
Thu 1	Overcast	56 / 76 °F	0	9 mph SW
Wed 30	Light drizzle	56 / 65 °F	0.05 in	4 mph SSW
Tue 29	Heavy drizzle	55 / 67 °F	0.15 in	9 mph N

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in New CastleQuestions

What's the weather like today in New Castle?

Mainly clear, from 43 °F to 66 °F, with a light breeze from the southwest (7 mph) and a 1% chance of rain.

Will it rain tomorrow in New Castle?

On Friday 30 the chance of rain is 6% (0.00 in): overcast.

How warm will it be this week?

Between a low of 32 °F and a high of 66 °F; the warmest day, Thursday 29.

What's the UV index today?

It reaches 3 (low). No special protection needed.

Is the pressure rising or falling?

It's 30.24 inHg and steady: −0.24 inHg over the last 24 hours.

When is the best time to visit New Castle?

The best time to visit New Castle is from June to September: highs of 71 °F to 81 °F, about 9 rainy days a month and 7 hours of sunshine a day.

What is the weather like in New Castle in October?

In October, New Castle normally sees highs of 61 °F and lows of 41 °F, with about 8 rainy days (4.59 in for the month) and 4 hours of sunshine a day. The sea is around 55 °F. These are 1991–2020 averages.

What are the warmest and wettest months in New Castle?

The warmest is July, with average highs of 81 °F, and the coldest January, with lows of 18 °F. The wettest is October (4.59 in) and the driest, August.

When is hurricane season in New Castle?

Hurricane season: from July to September. In the last 30 years (1996–2025), 3 tropical cyclones passed within 93 mi of New Castle, about one every 10 years. The most recent: Hermine, in August 2004.

More about New Castle today

Weather near New Castle

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 12 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 7:14 am (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from