textproduct: Topeka

KEY MESSAGES

- Unseasonably warm and dry conditions persist through Sunday.

- A cold front will bring some low chances for rain Sunday night into Monday, with greatest coverage and amounts expected across north- central Kansas.

DISCUSSION

Issued at 118 PM CDT Fri Oct 23 2026

A mature upper ridge remains centered over the central CONUS this afternoon, while a closed upper low lingers off the California coast and slowly inches eastward. At the surface, weak high pressure has shifted east with a lee trough deepening over the High Plains, supporting a southerly low-level flow regime across the area. The resulting airmass is warm and dry for late October, and mixing to near the top of the boundary layer is allowing temperatures to climb into the upper 70s to lower 80s in most locations under mostly sunny skies.

Saturday and Sunday remain dominated by the ridge and a persistent southerly breeze, yielding continued warm and mainly dry weather. Highs both days are expected to reach around 80 degrees in much of the area, with only modest day-to-day variation tied to cloud cover. Clouds should begin to increase from west to east on Sunday as the upstream trough and attendant surface front approach from the northern High Plains, but forcing and deeper moisture appear insufficient for meaningful precipitation during the daytime Sunday. Any showers that manage to develop ahead of the front would likely remain isolated and confined to far northwestern portions of the area.

Confidence remains low regarding the timing and progression of the cold front and associated rain chances Sunday into Monday, and this period continues to represent the main forecast challenge. Ensemble and deterministic guidance still favor a relatively slow eastward movement of the upper trough, with the surface front stalling near or just northwest of the area through much of Sunday before finally pushing southeastward Sunday night into Monday.

Rain chances should first increase across north-central Kansas (Republic, Cloud, Clay, Riley, Dickinson, Geary) Sunday evening as deeper ascent and moisture arrive along the boundary. Coverage there is most likely to reach scattered to numerous showers with embedded light thunderstorms, while areas farther east and south see lower probabilities and more hit-or-miss activity. Given modest instability and limited moisture depth, current evidence supports mainly light to moderate rainfall amounts, with heavier totals and any stronger storms displaced to areas farther southwest where better overlap of forcing and moisture exists.

By Monday, the front is expected to sweep southeastward across the remainder of the area, shifting shower chances into east-central and northeast Kansas before tapering from northwest to southeast. Temperatures behind the boundary should fall back into the 60s behind the front and low 70s for daytime highs ahead of the front, with more extensive cloud cover and any lingering showers further limiting diurnal warming. Exact frontal timing remains uncertain, so the gradient between warm pre-frontal and cooler post-frontal temperatures will still shift in subsequent forecasts.

AVIATION /18Z TAFS THROUGH 18Z SATURDAY/

Issued at 1200 PM CDT Fri Oct 23 2026

VFR at all TAF sites through the TAF period with gusty southerly wind this afternoon.

TOP WATCHES/WARNINGS/ADVISORIES

None.