Hourly Weather Forecast - Grantham, NH

9 AM
33°F
0%
3mph
WSW
Partly Cloudy
Humidity
70%
Feels like
31°F
Dew Point
25°F
10 AM
36°F
0%
4mph
SSW
Mostly Cloudy
Humidity
67%
Feels like
32°F
Dew Point
26°F
11 AM
38°F
0%
7mph
SSW
Mostly Cloudy
Humidity
64%
Feels like
33°F
Dew Point
27°F
12 PM
40°F
10%
8mph
S
Mostly Cloudy
Humidity
59%
Feels like
35°F
Dew Point
27°F
1 PM
42°F
10%
9mph
S
Mostly Cloudy
Humidity
56%
Feels like
36°F
Dew Point
27°F
2 PM
43°F
30%
10mph
S
30% Chance of Light Rain
Humidity
56%
Feels like
37°F
Dew Point
28°F
3 PM
42°F
70%
10mph
S
70% Chance of Light Rain
Humidity
68%
Feels like
37°F
Dew Point
33°F
4 PM
42°F
100%
8mph
S
Light Rain
Humidity
83%
Feels like
37°F
Dew Point
37°F
5 PM
41°F
100%
7mph
SSW
Rain
Humidity
97%
Feels like
37°F
Dew Point
41°F
6 PM
41°F
90%
8mph
SSW
Rain
Humidity
100%
Feels like
36°F
Dew Point
41°F
7 PM
41°F
60%
8mph
SSW
60% Chance of Rain
Humidity
100%
Feels like
36°F
Dew Point
41°F
7:00 PM
8 PM
41°F
40%
8mph
SSW
40% Chance of Rain
Humidity
100%
Feels like
35°F
Dew Point
41°F
9 PM
41°F
30%
8mph
SSW
30% Chance of Light Rain
Humidity
100%
Feels like
36°F
Dew Point
41°F
10 PM
41°F
30%
7mph
SW
30% Chance of Light Rain
Humidity
100%
Feels like
36°F
Dew Point
41°F
11 PM
41°F
30%
7mph
SW
30% Chance of Rain
Humidity
100%
Feels like
36°F
Dew Point
41°F

Today's High Temperature Outlook

Dangerous Heat Continues Across the Southwest

Dozens of record high temperatures will be challenged or shattered across the Southwest today.

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Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

(Image provided by Pixabay.com)

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