FRIDAY: Hot, Hazy, Humid

Iowa Heat Indices

Iowa High Temps

What did you think of the weather today? If you thought it was hot today, then you are not going to like the forecast for tomorrow. Fortunately it did not get as warm today as originally thought due to the clouds and rain. From the graphic above, temperatures were the coolest across northeast Iowa where they were under the clouds all day. However, if you notice out west, they were able to break out the sun and they warmed up into the lower 90s. This left central Iowa in between, so temperatures ended up in the mid 80s. Tonight there will a chance of isolated thunderstorms across southwest Iowa and northern Iowa.

Iowa Dew PointsTomorrow will be mostly sunny so this will allow temperatures to warm up quickly into the lower 90s. However, if clouds or rain from tonight stick around longer than expected tomorrow, this will have an impact on temperatures as we saw today. The image above is of dew points. I wish the image was forecasted highs as that would be just lovely, but unfortunately it is not. When dew points are in the 70s, that is tropical. For temperatures to be comfortable, you want dew points to be in the 50s. Since the dew points will be in the 70s on Friday, this will mean our heat index will be in the triple digits. If you don’t like the heat, I would recommend stop reading right here….

Iowa Heat IndicesI tried to warn you… Yes, the feel like temperatures Friday will range from 100°F-105°F. Because of this, I would expect schools with no central air to be dismissing early on Friday. If you will be outside on Friday, make sure to drink plenty of water and take frequent breaks. Rain will then be pushing up from the south late Friday afternoon into the overnight hours. This rain will be widespread Friday night. The severe threat looks to be low, however small hail and gusty winds may be possible. The bigger threat will be heavy rain. This same pattern will last through the weekend. Saturday and Sunday will be dry with highs in the low to mid 90s with rain chances overnight. We will finally get a break in the heat by Monday but the overnight rain chances will last through midweek next week. Stay cool!

Zach Sharpe

My name is Zach Sharpe. I am the president and forecaster for the Iowa Storm Chasing Network. You can find me on Twitter @Stormchaserzach and on Facebook at:

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