NWS Forecast Office Huntsville, AL

A cold front will approach the area late tonight, with showers becoming more widespread after midnight. Isolated thunderstorms are also possible. Heavy rainfall will be possible, which may lead to localized flooding. Overnight lows will only fall into the upper 60s to lower 70s.

Scattered to numerous showers/storms are expected today across the TN Valley. This activity is expected to become more widespread late tonight and on Wednesday, before tapering off on Thursday. Heavy rainfall will be possible each day, with up to 2 inches of additional rainfall expected. This may lead to localized flash flooding, especially east of I-65.

This graphic contains daily climate data (climate normals and records) for today for the sites listed. The legend is in the lower left portion of the image. The current "normals" period is 1981-2010. The date for each location represents the year in which the first observations began. However, some weather elements were recorded and/or retained before others at some sites. For example, at Huntsville, precipitation records begin in 1894, but official temperature records start in 1907. Following is a list containing the starting year that continuous weather records began at each site. Location: Year Temperature Records Began/Year Precipitation Records Began... Huntsville:1907/1894... Muscle Shoals:1893/1893... Cullman:1907/1907... Fayetteville:1957/1935... Guntersville:1910/1904... Russellville:1953/1953... Scottsboro:1891/1891... For more information, please visit the National Centers for Environmental Information at http://www.ncdc.noaa.gov