Weather forecast for todayGrantham, Jamaica

Weather forecast for today

Current condition 11:22 EST

  • 30°C
  • Feels like:
    35°C
Fair / Wind
Fair / Wind
  • Precipitation: 0mm
  • Wind: 35km/hSE 130°
  • Humidity: 68%
  • Dewpoint: 23°C
  • Pressure: 1012.19mbar
  • Visibility: 9.66km
  • UV index: 11
  • ▼
Currently, sunshine prevails, though brisk winds may affect outdoor plans.
The temperature is a blazing 30°C, while the real-feel temperature, which represents the influence of relative humidity on air temperature, is calculated to be a sweltering 35°C. The current temperature is nearly at the maximum predicted 31°C for today.

Saturday 17. Oct 2026

  • 31°C
  • 22°C
Thunderstorms / Wind
Thunderstorms / Wind
  • Precip. probability: 74%
  • Precipitation: 10mm
  • Wind: 35km/hSE 142°
  • Humidity: 79%
  • UV index: 7
  • Sunrise: 06:01 EST
  • Sunset: 17:43 EST
  • ▼
On Saturday, in Grantham, thunderstorms may be accompanied by gusty conditions.
The chance of rainfall for today is high. However, precipitation will be light. The highest temperature will be a hot 31°C, while the lowest temperature will be an agreeable 22°C.
The maximum heat index, which adjusts the air temperature based on humidity, is evaluated at a torridly hot 41°C. Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
October's usual high of 30.3°C is predicted to be matched by the day’s maximum temperature.
Sunrise was at 06:01 and sunset will be at 17:43; the daylight will last for 11h and 43min.

Hourly overview

Hourly temperatures

Warmest hour: 16h 33°C.
Coldest hour: 2h 24°C.

Chance of precipitation

Highest chance: 12h 75%.

Hourly weather forecast

  • 12h
  • 27°C
  • Feels like:
    31°C
Heavy Thunderstorms
Heavy Thunderstorms
  • Precip. probability: 75%
  • Precipitation: 16mm
  • Wind: 31km/hSE 138°
  • Humidity: 82%
  • Pressure: 1012mbar
  • Visibility: 3km
  • UV index: 7
  • ▼
  • 13h
  • 27°C
  • Feels like:
    31°C
Thunderstorms
Thunderstorms
  • Precip. probability: 75%
  • Precipitation: 1mm
  • Wind: 31km/hSE 141°
  • Humidity: 82%
  • Pressure: 1012mbar
  • Visibility: 10km
  • UV index: 6
  • ▼
  • 14h
  • 27°C
  • Feels like:
    32°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 59%
  • Precipitation: 2mm
  • Wind: 28km/hSE 135°
  • Humidity: 81%
  • Pressure: 1011mbar
  • Visibility: 4km
  • UV index: 5
  • ▼
  • 15h
  • 28°C
  • Feels like:
    32°C
Isolated Thunderstorms
Isolated Thunderstorms
  • Precip. probability: 32%
  • Precipitation: 0mm
  • Wind: 13km/hSE 140°
  • Humidity: 80%
  • Pressure: 1011mbar
  • Visibility: 14km
  • UV index: 4
  • ▼
  • 16h
  • 29°C
  • Feels like:
    33°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 11km/hSE 143°
  • Humidity: 74%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 1
  • ▼
  • 17h
  • 28°C
  • Feels like:
    31°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0mm
  • Wind: 11km/hSE 141°
  • Humidity: 78%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 17:43
  • 18h
  • 27°C
  • Feels like:
    30°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 10km/hSSE 147°
  • Humidity: 80%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 19h
  • 26°C
  • Feels like:
    29°C
Mostly Clear
Mostly Clear
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 10km/hSE 139°
  • Humidity: 79%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 20h
  • 26°C
  • Feels like:
    28°C
Mostly Clear
Mostly Clear
  • Precip. probability: 11%
  • Precipitation: 0mm
  • Wind: 8km/hSE 138°
  • Humidity: 80%
  • Pressure: 1013mbar
  • Visibility: 15km
  • UV index: 0
  • ▼
  • 21h
  • 25°C
  • Feels like:
    28°C
Mostly Clear
Mostly Clear
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 8km/hSE 130°
  • Humidity: 81%
  • Pressure: 1014mbar
  • Visibility: 14km
  • UV index: 0
  • ▼
  • 22h
  • 25°C
  • Feels like:
    27°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 6km/hESE 124°
  • Humidity: 82%
  • Pressure: 1014mbar
  • Visibility: 13km
  • UV index: 0
  • ▼
  • 23h
  • 24°C
  • Feels like:
    26°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 5km/hE 89°
  • Humidity: 83%
  • Pressure: 1014mbar
  • Visibility: 11km
  • UV index: 0
  • ▼
Today, a combination of gloomy and storm-filled weather is anticipated.
Rainfall is expected from 12h to 14h. With heavy precipitation of 16mm, most rainfall is expected at 12h.
The temperature will vary between a minimum of 24°C and a maximum of 29°C. The feels-like temperature will vary between a maximum of 33°C and a minimum of 26°C. The hottest part of the day will be around 16h.
Today, the maximum will be alike with October's typical high. The lowest temperature today will be also alike with October's average minimum.
Updated: Oct 17, 2026 @ 16:22:44 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

At 11:22 EST, the temperature is 30°C. Feels-like temperature is 35°C.

On Saturday, strong breezes may occur during thunderstorms.

With a probability of 74%, light precipitation of 10mm is anticipated.

Today, the highest temperature in Grantham will be 31°C, while the lowest temperature will be 22°C. The maximum heat index, which indicates how humid air affects the felt temperature, is estimated at 41°C.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature today will be also in line with the average low temperature.

On Saturday, in Grantham, sunrise was at 06:01 and sunset will be at 17:43 (EST).

In Grantham, today, there will be 11h and 43min of daylight.