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Tuesday Forecast: One last round of late summer heat; cooler and wetter weather looms later this week!

Published: Sep. 27, 2021 at 7:20 AM CDT|Updated: Sep. 28, 2021 at 5:50 AM CDT
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LINCOLN, Neb. (KOLN) - If you’ve been enjoying the late summer heat over the past day or two, we have one more day with those summery temperatures before a cold front swings through the state bringing with it some cooler and wetter weather as we finish off September and begin October. In fact, into the day on Tuesday we could be seeing our last 90°+ temperatures of the year with temperatures becoming much more seasonal by the end of the week.

Into Monday evening - much like the last several evenings - clear skies and comfortable conditions are expected across the state. Clear skies will continue into the overnight hours as well with more sunshine to start the day on Tuesday. We’ll finally begin to see the beginning influences of our cold front and upper level trough into Tuesday afternoon though as clouds are expected to increase across parts of central and western Nebraska into the afternoon and evening with skies becoming mostly cloudy by Tuesday night across western Nebraska. Most areas likely stay dry though for the day tomorrow, though there will be a chance for some isolated to scattered showers and storms across parts of western Nebraska into Tuesday evening and Tuesday night.

Skies are expected to remain mainly sunny across eastern Nebraska on Tuesday with some...
Skies are expected to remain mainly sunny across eastern Nebraska on Tuesday with some increasing cloud cover to the west. Dry weather is expected for most, though some isolated to scattered showers and storms will be possible across western Nebraska into Tuesday evening.(KOLN)

The weather will really begin to change as we head into the day on Wednesday and Thursday as the advancing cold front cuts across the state and is forecast to stall out across parts of eastern Nebraska. As the front initially pushes through, scattered showers and thunderstorms are expected to develop along the front with perhaps an isolated strong to severe storm being possible. As the front slows and stalls across the area, moisture will continue to be pulled up from the south which will keep showers with isolated thunderstorms going across the area into the day on Thursday, Thursday night, and even into Friday. Another piece of energy will move into the area by the weekend which will keep chances for showers in the forecast across the area.

This is the first time in quite sometime that we could see widespread rain across much of the coverage area and models continue to advertise the potential for some pretty decent rainfall amounts across the area too. The European model has been much more bullish on the potential for heavier rain across the area, showing between 1.50″ to 2.50″ of rain across the eastern half of the state through 12 PM on Saturday. The American GFS model isn’t quite as bullish and has much lower amounts through that same time with 0.25″ to 0.75″ across much of the area. The going forecast for now tends to lean towards the European model with many areas across central and eastern Nebraska looking at the potential for 1.00″ to 1.50″ of rain through the end of the week. That being said, there’s still plenty of time for the forecast to change, so make sure you stay tuned for more updates!

The European model is much more bullish on rainfall amounts later this week and shows the...
The European model is much more bullish on rainfall amounts later this week and shows the eastern half of the state picking up between 1.50" to 2.50" of rainfall.(KOLN)
The American model isn't quite as bullish on the heavier rain, keeping rainfall amounts between...
The American model isn't quite as bullish on the heavier rain, keeping rainfall amounts between 0.25" and 0.75" across the state.(KOLN)

Temperatures will be transitioning from a more summery feel to more seasonal, fall-like readings as the front moves through the state. We’ll see one more hot day on Tuesday with temperatures reaching the upper 80s in the west thanks to some added cloud cover, to the lower 90s in the east where we should see sunny to mostly sunny skies through the day on Tuesday.

Temperatures stay well above average on Tuesday with highs int he upper 80s to low 90s.
Temperatures stay well above average on Tuesday with highs int he upper 80s to low 90s.(KOLN)

Wednesday will be the transition day from summer to fall as the front moves across the state. We should see high temperatures in the upper 50s in the far west to the mid 80s across eastern and southeastern Nebraska.

Wednesday will be a transition day as a cold front moves across the state. High temperatures...
Wednesday will be a transition day as a cold front moves across the state. High temperatures will range from the upper 50s in the far west to the mid 80s in southeastern Nebraska.(KOLN)

Behind the front and with areas of clouds and rain through the day, temperatures will settle into the 60s to low 70s on Thursday which is right about where we should be for late September.

Temperatures will settle into the upper 60s to low 70s on Thursday with mostly cloudy skies and...
Temperatures will settle into the upper 60s to low 70s on Thursday with mostly cloudy skies and areas of rain.(KOLN)

The extended forecast will keep temperatures in the lower to middle 70s through the remainder of the week, the weekend and into early next week. Rain chances will be highest from Wednesday evening and into the day on Thursday with rain chances beginning to decrease a bit Thursday night. That said though, we’ll still hold on to some decent chances for some additional light rain into the day on Friday and Saturday with some low-end rain chances in the forecast into the day on Sunday and Monday of next week.

More late September heat is expected on Tuesday with cooler - but still warm - temperatures on...
More late September heat is expected on Tuesday with cooler - but still warm - temperatures on Wednesday. Cooler, wetter weather is expected for Thursday and beyond.(KOLN)

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