The Department of Meteorology says mainly fair weather is expected to prevail over the island today (Jan.25).There is a possibility of ground frost at some places in Nuwara-Eliya district during the early hours of the morning.Misty conditions can be expected at some places in Central, Sabaragamuwa, Western and Uva provinces and in Galle and Matara districts during the morning.Sea areas:Mainly fair weather will prevail in the sea areas around the island.Winds will be north-easterly and wind speed will be 20-30 kmph.Wind speed may increase up to 40-45 kmph at times in the sea areas off the coasts extending from Colombo to Mannar via Puttalam and from Galle to Pottuvil via Hambantota.The sea areas off the coasts extending from Colombo to Mannar via Puttalam and from Galle to Pottuvil via Hambantota can be fairly rough at times.