Weather forecast for 10 daysGrantham, NH
Weather forecast for the weekend
Sunday Oct 18, 2026
- 55°F
- 30°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSW 226°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:06 am EDT
- Sunset: 6:00 pm EDT
- details ▼
Today, in Grantham, expect sunny weather with a crisp, clear sky.
A temperature range of a moderate 55.4°F to a freezing 30.2°F is expected.
The forecasted daily high is projected to match October's typical maximum of 55.9°F.
Sunrise will be at 7:06 am and sunset at 6:00 pm; the daylight will last for 10h and 54min.
A temperature range of a moderate 55.4°F to a freezing 30.2°F is expected.
The forecasted daily high is projected to match October's typical maximum of 55.9°F.
Sunrise will be at 7:06 am and sunset at 6:00 pm; the daylight will last for 10h and 54min.
10-day overview
Daily temperatures
Warmest day: Tuesday 64°C.
Coldest period: Friday - Saturday 54°C.
Coldest period: Friday - Saturday 54°C.
Chance of precipitation
Highest chance: 20%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 55°F
- 30°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSW 226°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:06 am EDT
- Sunset: 6:00 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 37°F
Mostly Sunny
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 2mphS 174°
- Humidity: 58%
- UV index: 3
- Sunrise: 7:07 am EDT
- Sunset: 5:59 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 64°F
- 32°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 9mphN 350°
- Humidity: 59%
- UV index: 3
- Sunrise: 7:09 am EDT
- Sunset: 5:57 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 57°F
- 30°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 4mphNE 56°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:10 am EDT
- Sunset: 5:56 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 61°F
- 32°F
Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 9mphNNW 337°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:11 am EDT
- Sunset: 5:54 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 54°F
- 25°F
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 8mphNNW 344°
- Humidity: 56%
- UV index: 3
- Sunrise: 7:12 am EDT
- Sunset: 5:52 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 54°F
- 28°F
Sunny
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 4mphNNW 334°
- Humidity: 58%
- UV index: 3
- Sunrise: 7:14 am EDT
- Sunset: 5:51 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 59°F
- 36°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphWNW 282°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:15 am EDT
- Sunset: 5:49 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 63°F
- 39°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 7mphWNW 299°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:16 am EDT
- Sunset: 5:48 pm EDT
- details ▼
- Tuesday
- Oct 27, 2026
- 57°F
- 34°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 8mphNW 324°
- Humidity: 63%
- UV index: 3
- Sunrise: 7:17 am EDT
- Sunset: 5:46 pm EDT
- details ▼
Forecasts for the ten-day outlook show that a combination of mostly clear and gloomy weather is predicted.
Rainfall is not anticipated in Grantham in the upcoming days.
In the coming days, the maximum temperature will vary between 53.6°F and 64.4°F, while there will be a marked difference in overnight low temperatures, as the overnight lows will vary from 24.8°F to 39.2°F.
Tuesday will be the warmest day, with a maximum temperature of 64.4°F; Friday and Saturday, with the highest temperature of 53.6°F, will be the coldest days.
Rainfall is not anticipated in Grantham in the upcoming days.
In the coming days, the maximum temperature will vary between 53.6°F and 64.4°F, while there will be a marked difference in overnight low temperatures, as the overnight lows will vary from 24.8°F to 39.2°F.
Tuesday will be the warmest day, with a maximum temperature of 64.4°F; Friday and Saturday, with the highest temperature of 53.6°F, will be the coldest days.
Updated: Oct 18, 2026 @ 04:09:33 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, expect consistent sunshine and open skies.
Today, the maximum temperature will be 55.4°F, while the minimum temperature will be 30.2°F.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature today will be notably lower than the average low of 40.6°F.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature today will be notably lower than the average low of 40.6°F.
On Sunday, in Grantham, sunrise will be at 7:06 am and sunset at 6:00 pm (EDT).
In Grantham, the length of the day today will be 10h and 54min.
