The first day of spring in Thornton offers up mild temps, lots of sun

The changing of the seasons is here! Spring officially begins at 9:06pm tonight and we will say goodbye to winter with a fine looking day.

Sunny skies start us off and will be with us the majority of the day. The late afternoon and evening will bring just a few clouds. Overall, conditions will be calm and dry as we head for a high in the mid-60s.

Tonight, partly cloudy skies will be above and conditions remain calm. Overnight lows will be in the low to mid-30s.