By the numbers: moving one of college football's oldest border clashes from late November to late summer completely alters the atmospheric playbook.

For more than a century, generations of Tigers and Jayhawks measured the Border War by the bite of late-autumn air. From frozen sidelines and sleet showers to pocket hand warmers and bundled-up student sections, the historic clash between Missouri and Kansas was practically synonymous with Thanksgiving week football.

With the modern non-conference schedule shifting the revived series into mid-September, however, the meteorological game script looks drastically different. Instead of monitoring Canadian cold fronts and freezing levels along the I-70 corridor, equipment managers and fans alike are navigating late-summer warmth, elevated humidity, and sideline hydration.

Historically, more than 90 percent of all Border War meetings took place in November. In both Columbia and Lawrence, late November climatology features average afternoon highs near 50 degrees and overnight lows hovering right around freezing. In those traditional gridiron battles, cold air brought measurable consequences: footballs stiffened, kicking ranges shrank, and frost-hardened turf often dictated conservative, run-heavy game plans.

Mid-September tells a fundamentally different story. Typical mid-September highs across Mid-Missouri and Eastern Kansas peak in the low 80s, with dew points in the upper 50s and 60s. On artificial turf under late-summer sun, surface temperatures can easily exceed 100 degrees, making muscle cramping, exhaustion, and electrolyte management the primary physiological obstacles. While November games test crowd endurance against wind chill, September demands shade, water, and heat management.

Despite more than 120 all-time meetings dating back to 1891, games played before October remain extremely rare. Prior to tonight's kickoff, the rivals have squared off in September only four times, and the small sample size haze produced an evenly split 2-2 record.

Kansas claimed the first September meeting with a defensive 15-7 victory in Lawrence back in 1997, and capitalized again on home turf in 2003 with a 35-14 win. Missouri answered with a 41-23 victory at Faurot Field in 1998, and leveled the September ledger last season during a 42-31 shootout in Columbia.

Fortunately for fans making the trip along I-70 to Memorial Stadium tonight, late-summer weather is offering textbook football conditions.

Expect kickoff temperatures in Lawrence to hover in the upper 70s under mostly clear sky conditions, gradually easing into the lower 70s by the fourth quarter. With dewpoints holding in the comfortable 60s and winds remaining on the lighter side, spectators won't need parkas or misting fans, just a light layer for the drive home.

It may not feel like the frost-covered Border Wars of the past, but tonight's forecast delivers near-ideal conditions for the next chapter of this bitter interstate rivalry.