New Castle, NH Weather Forecast and Current Conditions

WEATHER ALERTS - Wind Advisory

Current Conditions From Nearby Local Station

Clear 36°F
Feels Like 36°F  
Humidity 80% Dew Point 30°F Wind W 1 MPH Gusts 1 Barometer 29.97 in.
Report from a MADIS/MESONET weather station 0.7 mi. NNE of central New Castle
at

Point Forecast at a Glance

ThuDec 18
Thu Dec 18: Sunny, High 46F, Low 37F
46
37
FriDec 19
Fri Dec 19: Rain, High 55F, Low 25F
100%
55
25
SatDec 20
Sat Dec 20: Mostly Sunny, High 38F, Low 31F
38
31
SunDec 21
Sun Dec 21: Mostly Sunny, High 44F, Low 19F
44
19
MonDec 22
Mon Dec 22: Sunny, High 28F, Low 17F
28
17
TueDec 23
Tue Dec 23: Rain And Snow, High 36F, Low 25F
40%
36
25
WedDec 24
Wed Dec 24: Mostly Sunny, High 37F
37
 

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures start near 46°F, reaching 55°F before cooling to 28°F, then recovering to 37°F by week's end. Some precipitation possible with wintry mix on at least one day.

Climate Context

This week's forecast shows temperatures running 2°F above the historical average for December. Normal highs for this period are around 39°F with lows around 22°F.

This Date in Weather History

1957 - A tornado swept across Jackson County, Williamson County and Franklin County in southern Illinois killing eleven persons.

More on this and other weather history

New Castle, NH 7 Day Weather Forecast Details

Thursday Dec 18

Sunny

Day: Sunny, with a high near 46. South wind around 5 mph.

Rain

Night: A 30 percent chance of rain, mainly after 4am. Increasing clouds, with a low around 37. South wind 5 to 15 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

Friday Dec 19

Rain

Day: Rain. High near 55. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Rain Likely

Night: Rain likely, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 25. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

Saturday Dec 20

Mostly Sunny

Day: Mostly sunny, with a high near 38. West wind 5 to 10 mph, with gusts as high as 25 mph.

Cloudy

Night: Cloudy, with a low around 31.

Sunday Dec 21

Mostly Sunny

Day: Mostly sunny, with a high near 44.

Partly Cloudy

Night: Partly cloudy, with a low around 19.

Monday Dec 22

Sunny

Day: Sunny, with a high near 28.

Partly Cloudy

Night: Partly cloudy, with a low around 17.

Tuesday Dec 23

Rain And Snow

Day: A chance of rain and snow. Partly sunny, with a high near 36. Chance of precipitation is 40%.

Rain And Snow

Night: A chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.

Wednesday Dec 24

Mostly Sunny

Day: Mostly sunny, with a high near 37.


About New Castle, NH

New Castle is a town in Rockingham County, New Hampshire, United States. The population was 1,000 at the 2020 census. It is the easternmost town in New Hampshire and the smallest by area, and it is the only town in the state located entirely on islands. It is home to Fort Constitution Historic Site, Fort Stark Historic Site, and the New Castle Common, a 31-acre (13 ha) recreation area on the Atlantic Ocean. New Castle is also home to a United States Coast Guard station, as well as the historic Wentworth by the Sea hotel.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.