The normal high for September 9th and 10th in Rockford is 78 degrees. Forecasted highs are expected to be some 15 degrees or more above the normal for this time of year and approach record territory tomorrow. The forecasted high tomorrow looks to be within striking distance of the record high of 96 degrees set back in 1931. The overnight low tonight is only forecasted to drop into the low 70s. The record low maximum of 72 was set back all the way in 1897 looks to be in jeopardy as well.
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In combination with the heat, dew points will be near 70 the next two days before a cold front ushers in cooler temperatures and drier air for the back half of the work week. The heat and humidity the next two days will make it feel more like it is in the middle to upper 90s during the peak heating hours of the afternoon.
To the west of Rockford in northeast Iowa and southwestern Wisconsin the NWS has issued Heat Advisories as temperatures will be in the middle to upper 90s with heat indices approaching and exceeding 100 in spots. With extremely dry conditions off to our west and with the combination of the heat and strong southerly winds, a fire danger will exist during the afternoon hours.
Rockford has only seen 0.03” of rain so far this month. We have seen measurable precipitation in Rockford on only 4 days in the last month! We area already down almost an inch of rain for September and in August Rockford was over an inch and a half below normal. Our best chance of rain looks to come on Wednesday with the passage of a cold front.
As the cold front pushes through our area during the middle of the week temperatures are expected to go back to near normal for this time of year, which is in the upper 70s. By Friday much cooler and drier air is expected with temperatures not making it out of the 60s and overnight lows dipping into the upper 40s. Right now, next weekend looks mostly dry and seasonably warm. Temperatures both days should be into the 70s, with a slight chance of rain Saturday night and into Sunday.
36 Hour Forecast:
This Afternoon: Mostly sunny and hot with a high near 92. Heat index values as high as 96. South winds around 10 mph, with some gusts up to 15 mph.
This Evening: Very warm, muggy, and hazy. Temperatures in the middle 80s. Heat index values near 90. South Southwest winds 5 to 15 mph.
Tonight: Hazy, warm, and muggy. Near record low maximum temperatures of near 72. Southwest winds around 10 mph.
Tomorrow Morning: Warm and humid. Mostly clear, some patch fog in some spots, burning off quickly. Temperatures in the middle 70s. Southwest winds 5 to 15 mph.
Tomorrow Afternoon: Mostly sunny, hazy, hot, and humid. Near record high temperatures near 94. Southwest winds 5 to 15 mph, with higher gusts up to 20 mph.
Tomorrow Evening: Mostly clear, warm and muggy. Temperatures in the middle 80s. Southwest winds 5 to 10 mph, gusts up to 15 mph.
Tomorrow Night: Turning partly cloudy, a 30 percent chance of showers and thunderstorms after midnight. Low in the upper 60s. Southwest winds around 5 to 10 mph.