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70s on Tuesday, Then Extended Cold Snap

The biggest story to start off the work week will be a welcome warm up. High pressure returns today, bringing with it much more seasonable temperatures. Look for a high in the upper 50s under sunny skies. If you have any yard work you’d like to get done this week, Monday and Tuesday will be the two best days, since they will bring the warmest and driest conditions. Highs will warm into the 70s on Tuesday and Wednesday will still feature 60s, but rain becomes likely. Wednesday night into Thursday, another cold front and Low pressure system makes its way through our area, sharply dropping temperatures back into the lower-50s for Thursday. 0.5”-1.0” of rain will be likely during this timeframe.


Thursday through next weekend will be much cooler…we’re talking highs in the upper-40s to lower-50s for the most part, which will place us about 10 degrees below normal for mid-October. With cold air aloft and cold air advection occurring over Lake Michigan, lake effect rain showers and hit or miss instability showers will be likely on Thursday and Friday. You can think of instability showers as pop-up activity during the heating of the day. They form because the air ~1 mile above the ground is much colder than at the ground itself, so as the sun heats the ground, the warm air rises and quickly becomes warmer than the cold environment aloft. This generates clouds and showers. So, yes…as ironic as it sounds, you could think of the sun being out as the reason it starts raining!


Yet another cold front will come through Saturday night into Sunday, which will reinforce the cold air already in place. This will likely bring another round of rain associated with the front followed by lake effect rain showers afterwards. If it can become just cold enough, lake effect snow flurries may be possible as well, so this will be something interesting to watch closely as we head towards this weekend and carry into next week. If you haven’t turned on your furnace yet, you’ll probably have to after Tuesday because overnight lows will consistently be in the lower-30s. Here is a look at the high temperature forecast trend over the next 10 days:




Mt. Pleasant Almanac for This Week:


Almanac Information is a way to look at normal and record high and low temperatures for this time of year. The normal temperatures are based on the 30-year average high and low for that date between 1991 and 2020. For example, if you take the high temperature for every September 26th between 1991 and 2020 and calculate the average of all 30 values, the result would be 70. Therefore, the normal high for today is 70°. Record high and low temperature data goes back to 1895. Sunrise and sunset data is also provided. All information is valid for Mount Pleasant.


October 10th

Normal High/Low: 63°/42°

Record High: 87° 1938

Record Low: 23° 2000

Sunrise: 7:47AM

Sunset: 7:04PM


October 11th

Normal High/Low: 63°/42°

Record High: 85° 1928

Record Low: 22° 1964

Sunrise: 7:48AM

Sunset: 7:02PM


October 12th

Normal High/Low: 62°/42°

Record High: 84° 1938

Record Low: 22° 1908

Sunrise: 7:50AM

Sunset: 7:01PM


October 13th

Normal High/Low: 62°/41°

Record High: 82° 1930

Record Low: 25° 1937

Sunrise: 7:51AM

Sunset: 6:59PM


October 14th

Normal High/Low: 61°/41°

Record High: 83° 1975

Record Low: 21° 1907

Sunrise: 7:52AM

Sunset: 6:57PM


October 15th

Normal High/Low: 61°/41°

Record High: 84° 1897

Record Low: 22° 1907

Sunrise: 7:53AM

Sunset: 6:56PM


October 16th

Normal High/Low: 60°/40°

Record High: 85° 1938

Record Low: 23° 1907

Sunrise: 7:55AM

Sunset: 6:54PM



Mid-Mitten Weather View’s Mission is to serve people by providing timely information to help keep you safe and make decisions based on the weather. We are passionate about educating both our forecasters and our followers about how weather forecasting works and how we can be best prepared when impactful weather threatens. Our team consists of both CMU alumni degreed meteorologists and current student forecasters from the University. For daily updates, we welcome you to check out our Facebook Page! We look forward to catching you back here next week for another weekly 7-Day forecast update.


-Weather Forecast by CMU Student Forecasters Isaac Cleland and John Jones

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