Read this article and answer this question The climate becomes progressively drier towards the north of the peninsula. In the north, the annual mean temperature is 27C in Merida. Average temperature in the peninsula varies from 24C in January to 29C in July. The lowest temperature on record is 6C . For the peninsula as a whole, the mean annual precipitation is 1,100 millimetres . The rainy season lasts from June to September, while the dry season runs from October to May. During the dry season, rainfall averages 300 millimetres ; in the wet season this increases to an average 800 to 900 millimetres . The prevailing winds are easterly and have created an east-west precipitation gradient with average rainfall in the east exceeding 1,400 millimetres and the north and northwestern portions of the peninsula receiving a maximum of 800 millimetres . The southeastern portion of the peninsula has a tropical rainy climate with a short dry season in winter. Peten has a hot climate and receives the highest rainfall in all Mesoamerica. The climate is divided into wet and dry seasons, with the rainy season lasting from June to December, although these seasons are not clearly defined in the south; with rain occurring through most of the year. The climate of Peten varies from tropical in the south to semitropical in the north; temperature varies between 12 and 40C , although it does not usually drop beneath 18C . Mean temperature varies from 24.3C in the southeast to 26.9C in the northeast. Highest temperatures are reached from April to June, while January is the coldest month; all Peten experiences a hot dry period in late August. Annual precipitation is high, varying from a mean of 1,198 millimetres in the northeast to 2,007 millimetres in central Peten.
How many degrees does the temperature vary in January?
5