Muggy Start and High Heat Index
The air in Van Alstyne is currently heavy with moisture, creating an oppressively humid atmosphere. Right now, the thermometer reads 79F, but the combination of heat and humidity makes it feel like 82F. The relative humidity sits at a sticky 89%, with a dew point of 75F indicating significant moisture in the air. Winds are blowing from the south at 8 mph, with gusts reaching up to 20 mph, while the sky remains clear.
Today, the heat will intensify. Temperatures are forecast to climb to a high near 91F. The National Weather Service indicates that heat index values will reach as high as 99F, making it feel significantly hotter than the actual air temperature. South winds will pick up slightly, ranging from 10 to 15 mph. Despite the heat, the sky will be mostly sunny, and the chance of precipitation is low at just 7%. The low for tonight is near 76F.
Storms Expected Tomorrow
Conditions will shift dramatically as the week progresses. Tonight, the sky will turn partly cloudy with a low around 76F. Temperatures may rise slightly to around 78F overnight. There is a 30% chance of showers and thunderstorms developing after 4am. Any rainfall tonight will likely be minimal, with new amounts less than a tenth of an inch possible.
Tomorrow brings a notable change in weather. Showers and thunderstorms are likely, with the chance of precipitation rising to 66% in the morning forecast and potentially 70% according to detailed models. Highs will drop to near 84F, with temperatures falling to around 81F in the afternoon. Winds will shift to the west at 5 to 10 mph. Rainfall totals between a tenth and a quarter of an inch are possible.
Looking ahead to tomorrow night, showers and thunderstorms will likely continue before 1am, followed by more widespread rain. The sky will be mostly cloudy with a low around 66F. North northeast winds will increase to around 10 mph. This period carries an 80% chance of precipitation, with new rainfall amounts between a half and three quarters of an inch possible.
