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- calendar_today October 12, 2026
Unseasonably Warm Temperatures Expected in Missouri
This week, Missouri residents can expect temperatures more typical of summer than mid-October, as a significant temperature spike is forecast across the state. Meteorologists report an incoming stretch of weather that could challenge or break standing record highs, with the unusual warmth set to be felt throughout much of Missouri on Monday and Tuesday.
Details on the Expected Heat Wave
According to Jordan Didio, a meteorologist with the National Weather Service in Springfield, a ridge of high pressure and warm air is responsible for the dramatic increase in temperatures. The region is anticipated to see highs reach the upper 80s and low 90s across both days: "We’re about 15 to 20 degrees above our climatological average," Didio explained. "We may tie them, we may break these records, but they’ll come very close either way." This high pressure ridge is the primary force behind the unseasonable summerlike heat currently pushing through the state.
Record Highs in Jeopardy
The projected warmth is significant enough to threaten longstanding daily record highs for October in the area. Didio stated, "That’s going to produce temperatures around 90 and even the low 90s really across the entire area. Those are going to challenge some daily record high temperatures." With temperatures running 15 to 20 degrees above the climatological average, the start of the week will feel notably more like summer than fall.
Chance of Rain and Thunderstorms Midweek
The spell of summerlike heat in October will not last, however. As the week progresses, the forecast calls for changes due to the approach of a new weather system. Didio outlined, "Chances for rain and thunderstorms Wednesday and Thursday could usher in much cooler weather by the end of the week." The arrival of rain and thunderstorms is expected to signal an end to the extreme heat, paving the way for a significant temperature swing.
Significant Temperature Swing and Cooler Weather Ahead
Behind the rain and storms, much cooler air is predicted to settle across Missouri. "Behind that system as we get into Friday, Saturday and Sunday, you could see potentially much cooler temperatures," Didio said. "We’re talking about temperatures in the 60s or even 70s." The change will be pronounced, with a potential temperature swing of 20 to 25 degrees as the state transitions from record-challenging heat to typical fall temperatures.
Summary
Missouri is facing a period of extreme and unusual warmth for October, with temperatures expected to approach or surpass record highs due to a ridge of high pressure. The heat will be short-lived, as midweek rain and thunderstorms are forecast to bring a rapid return to fall temperatures and much cooler weather across the state by the weekend.
Source: missourinet.com.
