After being spoiled by above average temperatures this weekend, we finally snapped back to reality as a cold front moved through the state on Monday. This cold front caused our temperatures to return back to average, and for the winds to become blustery. Wind gusts across the state were near 30mph out of the west/northwest for much of the day. If you thought today was cold, we do not have good news for you.
The forecast models continue to show a very cool Friday and Saturday. Highs on Friday and Saturday look to stay into the 40’s! Yes you read that right, highs in the 40’s. The image above is of the 12z NAM (North American Model) run. The GFS (Global Forecast System) is even a few more degrees cooler than the 12z NAM run as shown above. The coldest temperatures will come Friday night into Saturday as overnight lows dip into the 20’s. As many of you may know, Friday is also Halloween.
If your trick-or-treat is Friday night, you will want to make sure you, and the kids are bundled up as it will be cool. Fortunately, the winds will be light with a wind out of the northeast at 5mph – 10mph. Temperatures between 5pm and 9pm will be in the upper 30s across northeast Iowa, to the lower 40s across southern Iowa, or roughly another 5° to 7° off of the temperatures shown above in the statewide temperature graphic. Friday will be one of the coolest trick-or-treats that we have seen in at least the past 5 years. As you can see in the graphic above, a forecasted high of 47° in the city of Des Moines on Friday will still be below all of the daily highs for October 31st, going all the way back to 2009. Halloween isn’t looking so much like a treat, however, it could always be worse.
How does this compare to average? Our average high for this time of year should range from the mid to lower 50’s across the north, to the mid to upper 50’s across the south. Friday will end up being below average, however, after being above average this weekend, it will be a tradeoff that we will have to deal with. This cool down will only be brief as early next week, we will warm back up into the 50’s, near average.
For all of the Halloween history forecasts across the state, click the images below.