The warmer air will come with high pressure moving over the Western Atlantic east with a southwesterly flow around the high Monday through Tuesday, according to the National Weather Service.
Monday's high temperatures will be in the lower to mid-50s across Fairfield County. Meanwhile, a low moving through the Midwest and Great Lakes region will slowly approach, bringing a chance of rain late Monday to areas across southwestern Connecticut.
Mild air will remain across the region Monday night with lows in the middle to upper 40s under cloudy skies.
Rain will be likely on Tuesday as low pressure passes to the north by late in the day.
High pressure will build back in briefly Tuesday evening. Temperatures Tuesday will be even higher than Monday, reaching the mid-50s to lower 60s.
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