We are behind a cold front Tuesday with afternoon temperatures at late March and early April norms. Tuesday’s high of 58-degrees in Indianapolis is the normal for April 1. Last year, this same date only reached 49°, the second coldest ever for the date. The coldest was 47° set in 1960.
Skies will gradually clear and allow temperatures to fall well into frost territory early Wednesday morning. Frost formation begins when the thermometer reaches 36°, so we are bracketing the hours from 2 a.m. through 7 a.m. for the frosty conditions. Wide-spread frost is likely before sunrise.
TIME FOR A CHANGE?
The second half of spring 2021 has been chilly and ranks 17th coldest to-date. We have not had a 70-degree day since May 2, but that appears to be changing. A gradual afternoon warming trend is getting underway as we add an extended spell of sunny and dry weather.
Afternoon temperatures improve from 10-degrees below normal Tuesday and Wednesday to five to seven degrees below normal this weekend. However, the pattern is set to take a turn early next week when 70° high temperatures return. Starting next week and perhaps extending to the final week of May, the probability for above normal temperatures is looking very likely!