Bigbertha22,
The best general information for Grenada is located at the website (can't post a link - yet)
www (dot) grenadaexplorer (dot) com (backslash) Homepageeng.htm
To quote from their webpage: Average temperatures range from 24C/ 75F to 30C/ 87F, tempered by the steady and cooling trade winds. The lowest temperatures occur between November and February. Because of Grenada's remarkable topography, the island also experiences climate changes according to altitude. The driest season is between January and May. Even during the rainy season, from June to December, it rarely rains for more than an hour at a time and generally not every day.
I'm part of a group that goes to Grenada every year for about 2 weeks. We chose the end of January into February as our time slot. Even though that falls outside the normal rainy season, we try to pack those little collapsable umbrellas in our luggage or backpacks because quick daily showers are always possible. We'll be back in Grenada on January 28th and staying until Feb. 8
Best rum punch on the island is at BB's Crabback with the Dodgy Dock at Tru Blue running a hot second. BB's is a delightful restaurant with a terrific menu and the chef/owner is a very personable fellow as well.
Enjoy your trip to Grenada!
Donna