Grantham, NH Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Sunny 16°F
Feels Like 7°F  
Humidity 66% Dew Point 7°F Wind W 6 MPH Gusts 10 Barometer 28.92 in.
Solar Rad 26 w/m2
Report from a MADIS/MESONET weather station 2.3 mi. NE of central Grantham
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Point Forecast at a Glance

FriDec 12
Fri Dec 12: Mostly Sunny, High 25F, Low 12F
25
12
SatDec 13
Sat Dec 13: Mostly Cloudy, High 29F, Low 17F
29
17
SunDec 14
Sun Dec 14: Mostly Cloudy, High 24F, Low 7F
24
7
MonDec 15
Mon Dec 15: Mostly Sunny, High 18F, Low 10F
18
10
TueDec 16
Tue Dec 16: Mostly Sunny, High 26F, Low 13F
26
13
WedDec 17
Wed Dec 17: Mostly Cloudy, High 35F, Low 24F
35
24
ThuDec 18
Thu Dec 18: Mostly Cloudy, High 42F
42
 

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7-Day Temperature Trend

Week Ahead Summary

High temperatures dip from 25°F to a low of 18°F mid-week, then warm to 42°F. Dry weather expected throughout the week.

Climate Context

This week's forecast shows temperatures running 7°F below the historical average for December. Normal highs for this period are around 35°F with lows around 18°F.

This Date in Weather History

1969 - The worst tornado of record for western Washington State tracked south of Seattle, traveling five miles, from Des Moines to Kent. The tornado, 50 to 200 yards in width, began as a waterspout over Puget Sound. One person was injured and the tornado caused half a million dollars damage.

More on this and other weather history

Grantham, NH 7 Day Weather Forecast Details

Friday Dec 12

Mostly Sunny

Day: Mostly sunny, with a high near 25. Wind chill values as low as zero. West wind 10 to 15 mph, with gusts as high as 35 mph.

Mostly Clear

Night: Mostly clear, with a low around 12. West wind around 5 mph becoming calm after midnight.

Saturday Dec 13

Mostly Cloudy

Day: Mostly cloudy, with a high near 29. South wind around 5 mph.

Mostly Cloudy

Night: Mostly cloudy, with a low around 17. Southwest wind around 5 mph becoming calm in the evening.

Sunday Dec 14

Mostly Cloudy

Day: Mostly cloudy, with a high near 24. Calm wind becoming northwest around 5 mph in the morning.

Partly Cloudy

Night: Partly cloudy, with a low around 7.

Monday Dec 15

Mostly Sunny

Day: Mostly sunny, with a high near 18.

Mostly Cloudy

Night: Mostly cloudy, with a low around 10.

Tuesday Dec 16

Mostly Sunny

Day: Mostly sunny, with a high near 26.

Mostly Cloudy

Night: Mostly cloudy, with a low around 13.

Wednesday Dec 17

Mostly Cloudy

Day: Mostly cloudy, with a high near 35.

Mostly Cloudy

Night: Mostly cloudy, with a low around 24.

Thursday Dec 18

Mostly Cloudy

Day: Mostly cloudy, with a high near 42.


About Grantham, NH

Grantham is a town in Sullivan County, New Hampshire, United States. The population was 3,404 at the 2020 census, an increase over the figure of 2,985 tabulated in 2010. The planned community of Eastman is in the eastern part of the town.

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.