After a mainly cloudy day today with high temperatures in the upper 30s to low 40s, expect a very gloomy and dreary Friday night. It is staying cloudy with areas of dense fog and drizzle at times overnight. Temperatures will be in the middle 30s for most of Long Island.

SATURDAY: It is unfortunately going to still be cloudy with fog and drizzle through the entire day on Saturday. Please use caution when you encounter any fog - use low beam headlights and try to leave plenty of room between you and the car in front of you. Temperatures on Saturday will start in the 30s to near 40 degrees. Afternoon temperatures will start in the low to middle 40s and high temperatures will gradually warm into the upper 40s to near 50 degrees.

SATURDAY NIGHT INTO SUNDAY MORNING: From around 10 p.m. Saturday until 8 a.m. Sunday, off and on periods of rain will move across Long Island. A brief downpour and rumble of thunder cannot be ruled out. Areas of fog will linger, too. Please slow down travel, especially if you encounter a downpour. Temperatures will be mild - in the middle to upper 40s for most of Long Island.

DAYLIGHT SAVING TIME BEGINS: This is a reminder to "spring forward" one hour on Sunday at 2 a.m. Sunrise on Sunday morning will be at 7:15 a.m. and sunset will be at 6:51 p.m.

THE REST OF SUNDAY: The weather can vary greatly across Long Island. Clouds, drizzle and fog will be slow to clear. It will become warmer with some hints of sunshine developing in the afternoon for especially Nassau County and western Suffolk County away from the immediate South Shore.

There can be a 20 degree or more difference in high temperatures from the East End to parts of Nassau and western Suffolk. It is expected to stay cooler -- 40s -- for the South Shore and East End where clouds and some fog will linger longer into the afternoon. The rest of Long Island is expected to warm into the upper 50s to low 60s - enjoy if you are in those areas!

Another sign of the warmer months we are heading into is that tree pollen is starting to become active. It is still very low, but something to start taking note of. Tree pollen always begins allergy season in late-winter and spring, followed by grass pollen from mid-spring through summer and ragweed becomes more problematic later in our summer months.

Monday and Tuesday look great with a mix of sun and clouds along with high temperatures mostly in the middle to upper 50s. Parts of Nassau County and western Suffolk County may get into the 60s. Rain chances increase for next Wednesday and Thursday - still with high temperatures in the upper 40s to middle 50s. Drier weather returns into next weekend with overall cooler high temperatures.