Grantham Weather Today — New Hampshire, United States
Current temperature, rain chance, humidity, wind and air quality in Grantham, plus an hourly and 3-day forecast. Updated through the day.
12:13
Sun, 20 Sep 2026
📍 New Hampshire, United States
Grantham??
27
°C
Patchy rain nearby
Feels 28°C · 81°F
💧 54% Humidity
💨 ↘ 16.2 km/h SE
👁 10 km Visibility
🌧 0.04 mm Precip
☁ 100% Cloud
☀️ UV Extreme
🌿 AQI Good
☀️ UV Index
11
Extreme
🔵 Pressure
1013
hPa · 29.92 in
💨 Wind
16.2
km/h · Gust 20.5 km/h
↘ SE
💧 Humidity
54%
Dew point 17.1°C
👁 Visibility
10
km · 6 miles
🌡 Heat Index
28.2°
Wind chill 27.3°C
🌿 Air Quality
Good
US EPA Index: 1
🌅
Sunrise
05:58 AM
🌇
Sunset
06:07 PM
📅 3-Day Forecast
Sunday
20 Sep 2026
Overcast
28°
/
21°
💧80%
🌧1.34mm
💨19
☀️UV 11
Monday
21 Sep 2026
Overcast
26°
/
21°
💧83%
🌧1.41mm
💨17
☀️UV 10.6
Tuesday
22 Sep 2026
Mist
25°
/
21°
💧87%
🌧1.43mm
💨17
☀️UV 7.4
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