The thermometers built into the grill which is on the mounted to the top of the grill reads 100°F higher than a thermometer inside of the grill.
The thermometers built into the grill which is on the mounted to the top of the grill reads 100°F higher than a thermometer inside of the grill.
Heat rises, cheapo thermometers aren’t super accurate.
If you can get access to the probe itself, try the two easy extremes… boiling water and ice water. See how far off they are. They will be off, it just depends by how much.
Of course the important metric when it comes to cooking food isn’t the air temp, but the temp inside the food, which is why an internal thermometer is what most people go by.