Outlook to August 2July 20th, 2013 at 11:58 pm by Chad Evans under Chad's WLFI Weather Blog
OVERALL: Trend favors a shift from slightly above-normal temperatures Monday-Tuesday to slightly-below normal temperatures Wednesday, July 24 to July 31. Above-normal temperatures will return as August begins & they may hang on for a while.
Rainfall loves a bit below-normal up to August 2. Normal overall now-August 2 is about 1.56″.
THE DETAILS: Areas of fog are possible tonight, followed by partly cloudy skies & highs in the mid 80s Sunday. Much of the really nice, dry, cooler air will be shunted to our northeast, but it will still feel better.
After lower dew points Sunday (more comfortable) at 58-64, tropical air will surge back in Sunday night as a warm front lifts through. Dew points will surge back to the lower 70s with some scattered showers & t’storms.
Monday-Tuesday will 2-3 rounds of some scattered showers & t’storms. We will watch it, but it currently appears the main severe threat will develop from northwestern Illinois to Minnesota, Iowa & Nebraska & we will tend to get the left overs of any t’storm complexes that develop (as they move away from environment of stronger mid- & upper-level winds) or the old outflow boundaries/MCVs may be triggers to pop a some storms. Cold front will clear area Tuesday night-Wednesday morning.
By Wednesday through late week, dry, pretty pleasant weather will move in with highs of 80-85 with lower humidity & overnight lows of 57-61.
Some scattered t’storms are possible next Saturday with highs of 80-85, while Sunday currently looks dry with partly cloudy skies & highs of 78-83 & lows of 57-61. It looks comfortable with highs of 78-83 & lows of 52-57 July 29-31, but the heat may be turned up again to begin August.
Data continues to suggest massive upper ridge building to our west will move in as August begins. At first, I thought this ridge may get in here by late July, but it looks as if it will not do so until we begin August.
Overall, rainfall looks a bit below-normal through August 1.