Weather predicted to improve

The weather went from bad to worse. The low last night was 30 degrees and I'm wondering if my Pansies will survive. I didn't cover them and can't believe it was so cold yesterday. I checked the 10 day forecast and it showed last night as the coldest. Temperatures should be in the high 30's to mid 40's at night and 50's to 60's during the day. It's been a crazy cold Spring, but the future looks warmer.