Weather in Texas can be unpredictable. NICA has some rules (click for all rules) we always follow:
Lighting (30 min stop)
Cold (below freezing, no ride)
Beyond that, we track the weather using Weather.gov and determine the potential muddiness (or slipperiness around ATX) using TexMesoNet. Here are some example links to place we ride and race.
Soil and slipperiness:
Weather forecast (the same one NICA uses to determine if a race will happen). To adjust for any location, just get the Lat/Long for that location and swap it into one of the URLs.