LATEST FORECAST DISCUSSION
Meteorologist: Monica Ott
September has been a warm and dry month for Western Wisconsin. In Eau Claire we haven't even seen an inch of rainfall yet, which means we are still more than two inches below average for the monthly precipitation. There are rain chances several days this week and although none of these chances look to bring us a soaking rainfall, any bit will certainly help!
One cool thing to mention...Friday afternoon marked the equinox (which is the time when the direct rays of the sun are at the Equator) but it was not the day this fall when we had exactly 12 hours of daylight and 12 hours of darkness. That usually falls a few days afterwards for us up north, here. And, the equilux as it is known, happens for us today! That means the sunrise is at 6:57 AM and sunset happens at 6:57 PM.
Temperatures will still feel pretty summer-like today as highs remain close to 80°, but as that cold front finally passes through we will see a big shift in the temperature and the dewpoint through the afternoon and evening. It will still feel quite sticky today with dewpoints in the upper 60s but after the front passes this evening, the heat and humidity will drastically be lowered. Showers and thunderstorms will continue through the afternoon (but not a washout) and through the night more rainfall is expected as lows remain mild in the low 60s.
A more significant cool down is expected starting Tuesday with highs around 70 and continued rain showers. By the middle of the week we could be looking at below average temperatures. High pressure will build to the west, clearing the skies Wednesday and allowing a cooler air mass to trickle down from Canada. Highs will only be in the mid to low 60s for the remainder of the work week.
Friday looks to be the coolest day in a while with highs in the low 60s. The models indicate a quick moving system to develop to our northwest and arrive late Thursday or early Friday, but the timing will likely change some in the coming days. Good news for next weekend...lots of sunshine and comfortable temperatures around 70.