From Sean Bellafiore:
The last full day of Winter 2018/2019 featured mostly sunny skies and highs in the upper 60s and low 70s. The first few days of Spring 2019 features similar weather with temperatures in the 60s and 70s, but we're already eyeing a few rounds of spring showers over the next several days. It'll be a quiet evening across Central Texas as overnight lows drop into the mid/upper 40s with mostly clear skies. Skies gradually turn partly to mostly cloudy Wednesday as a weak cold front slides through the area during the afternoon. The front may have just enough muster to form a few isolated afternoon showers along and west of I-35, but Wednesday's rain chances are a paltry 20% at best. Highs Wednesday range from the mid/upper 60s along and west of I-35 to the low 70s east of I-35 where the cold air won't arrive in time to drop afternoon temperatures.
Wednesday's cold air mass really isn't too cold, but it'll have enough cold air to drop temperatures Thursday morning into the upper 30s and low/mid 40s. Mostly clear skies Thursday morning last through the afternoon and high temperatures climb back into the low/mid 70s. Morning lows Friday jump back into the mid 40s while afternoon highs again climb back into the low/mid 70s, but our next storm system is on approach and will turn mostly clear skies early into mostly cloudy skies late in the afternoon.
Friday afternoon remains rain-free as does much of the night Friday, but rain chances jump up during the day Saturday. Scattered showers and non-severe storm chances are up to 60% with the best chance of rain coming during the late morning and the afternoon. Mostly cloudy skies and the scattered rain keep afternoon highs in the mid/upper 60s. We won't have much instability in the atmosphere to work with, so while we'll likely hear some rumbles of thunder, storms are not anticipated to strengthen too much and will likely only contain very small hail and gusty 40 MPH winds at most.
Rain chances fall to 30% Sunday as temperatures rebound into the mid 70s yet again. With slightly warmer temperatures Sunday, we'll have a bit of a better chance at seeing an isolated severe storm or two even though the overall rain chances are lower. It's still a bit early to diagnose Sunday's severe weather threat, but as of now, the severe weather threat is slightly higher than Saturday but still low overall. Temperatures climb back into the mid 70s Monday with partly cloudy skies, but yet another cold front may spark a few isolated showers again. Monday's front is expected to bring a more noticeable temperature drop and highs Tuesday may only reach the mid 60s.