Weather forecast for todayGrantham, NH

Weather forecast for today

Current condition 11:00 am EDT

  • 39°F
  • Feels like:
    30°F
Partly Cloudy
Partly Cloudy
  • Precipitation: 0"
  • Wind: 12mphNW 320°
  • Humidity: 65%
  • Dewpoint: 28°F
  • Pressure: 30.16"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
Currently, in Grantham, scattered clouds are present, allowing some sunlight through.
The temperature is a cold 39.2°F, the felt air temperature, due to the wind, registers as appraised at a freezing 30.2°F. The current temperature is almost at the maximum anticipated 42.8°F for today.

Saturday Oct 17, 2026

  • 43°F
  • 27°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphNW 323°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:05 am EDT
  • Sunset: 6:02 pm EDT
  • ▼
Today, on Saturday, October 17, bright conditions and mild breezes are expected.
Temperature fluctuations between a chilly 42.8°F and a harsh 26.6°F are forecasted.
It will be colder, and the temperature will align more closely with November's average high of 42.6°F than October's.
Sunrise was at 7:05 am and sunset will be at 6:02 pm; the daylight will last for 10h and 57min.

Hourly overview

Hourly temperatures

Warmest period: 2 pm - 4 pm 41°C.
Coldest hour: 2 am 28°C.

Chance of precipitation

Highest chance: 2 am 2%.

Hourly weather forecast

  • 12 pm
  • 39°F
  • Feels like:
    32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphNW 322°
  • Humidity: 55%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 1 pm
  • 41°F
  • Feels like:
    34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 12mphNW 322°
  • Humidity: 48%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 41°F
  • Feels like:
    34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphNW 323°
  • Humidity: 43%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 3 pm
  • 41°F
  • Feels like:
    34°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphNW 323°
  • Humidity: 38%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 41°F
  • Feels like:
    34°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphNW 323°
  • Humidity: 38%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 41°F
  • Feels like:
    34°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphNW 321°
  • Humidity: 39%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 37°F
  • Feels like:
    32°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNW 324°
  • Humidity: 45%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:02 pm
  • 7 pm
  • 36°F
  • Feels like:
    32°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNW 324°
  • Humidity: 53%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 34°F
  • Feels like:
    30°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphNW 326°
  • Humidity: 60%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 32°F
  • Feels like:
    32°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphNW 324°
  • Humidity: 65%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 30°F
  • Feels like:
    30°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphNNW 327°
  • Humidity: 69%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 30°F
  • Feels like:
    30°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphNW 308°
  • Humidity: 70%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, a combination of mostly clear and overcast weather is forecasted.
The temperature will vary between the highest temperature of 41°F and the lowest temperature of 30.2°F. The warmest part of the day will be from 1 pm to 5 pm.
Today, the high will reflect a pattern closer to November's 42.6°F than October's. The minimum temperature will be also more consistent with November's average low of 29.8°F than October's typical 40.6°F.
Updated: Oct 17, 2026 @ 15:00:25 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (11:00 am EDT) is 39.2°F. Feels-like temperature is 30.2°F.

Today, in Grantham, mostly sunny skies are expected.

Today, the highest temperature will be 42.8°F, while the lowest temperature will be 26.6°F.
The highest temperature today will be noticeably lower than the average maximum of 55.9°F in October. The lowest temperature today will be also significantly lower than the average low of 40.6°F.

On Saturday, in Grantham, sunrise was at 7:05 am and sunset will be at 6:02 pm (EDT).

In Grantham, today, there will be 10h and 57min of daylight.