10-day forecast for Grantham, NH: 29° to 66°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
66°
Best day: Monday, October 19
62° · 0.46 in
Worst day: Friday, October 16
Tap any day below to see morning, afternoon, evening and overnight.
Fri, 1662° / 38°0.46
Morning42°feels 36°
Afternoon54°feels 54°
Evening62°feels 62°
Overnight38°feels 36°
62 °
Grantham, Friday, 16 October
Rain. High 62°, low 38°.
Pressure29.74 inHg
Wind11.9 mph S
Humidity98%
Visibility2.6 mi
Dew point52°
Sat, 1757° / 36°0.04
Morning41°feels 35°
Afternoon46°feels 39°
Evening38°feels 31°
Overnight48°feels 44°
57 °
Grantham, Saturday, 17 October
Light rain. High 57°, low 36°.
Pressure30.03 inHg
Wind14.4 mph NW
Humidity63%
Visibility6.2 mi
Dew point27°
Sun, 1853° / 29°0
Morning31°feels 26°
Afternoon53°feels 50°
Evening44°feels 39°
Overnight31°feels 27°
53 °
Grantham, Sunday, 18 October
Clear. High 53°, low 29°.
Pressure30.53 inHg
Wind5.6 mph SW
Humidity52%
Visibility6.2 mi
Dew point23°
Mon, 1966° / 37°0
Morning43°feels 39°
Afternoon58°feels 55°
Evening59°feels 56°
Overnight39°feels 34°
66 °
Grantham, Monday, 19 October
Clear. High 66°, low 37°.
Pressure30.45 inHg
Wind6.7 mph S
Humidity41%
Visibility—
Dew point31°
Tue, 2062° / 37°0
Morning42°feels 42°
Afternoon55°feels 53°
Evening54°feels 53°
Overnight42°feels 41°
62 °
Grantham, Tuesday, 20 October
Clear. High 62°, low 37°.
Pressure30.33 inHg
Wind5.4 mph NW
Humidity54%
Visibility—
Dew point37°
Wed, 2156° / 38°0
Morning43°feels 42°
Afternoon52°feels 49°
Evening50°feels 48°
Overnight38°feels 37°
56 °
Grantham, Wednesday, 21 October
Clear. High 56°, low 38°.
Pressure30.47 inHg
Wind6.8 mph N
Humidity57%
Visibility—
Dew point35°
Thu, 2255° / 37°0
Morning41°feels 40°
Afternoon50°feels 49°
Evening52°feels 51°
Overnight41°feels 40°
55 °
Grantham, Thursday, 22 October
Overcast. High 55°, low 37°.
Pressure30.50 inHg
Wind4.8 mph SW
Humidity70%
Visibility—
Dew point38°
Fri, 2363° / 40°0
Morning45°feels 44°
Afternoon56°feels 55°
Evening58°feels 57°
Overnight50°feels 49°
63 °
Grantham, Friday, 23 October
Overcast. High 63°, low 40°.
Pressure30.33 inHg
Wind5.2 mph NW
Humidity67%
Visibility—
Dew point43°
Sat, 2451° / 48°0
Morning49°feels 48°
Afternoon50°feels 47°
Evening50°feels 49°
Overnight48°feels 47°
51 °
Grantham, Saturday, 24 October
Overcast. High 51°, low 48°.
Pressure30.53 inHg
Wind6.2 mph SE
Humidity91%
Visibility—
Dew point47°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Grantham, NH around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.