textproduct: Aberdeen

KEY MESSAGES

- The next round of rain continues this morning across eastern SD. Totals of a couple tenths of an inch are expected around and east of the Sisseton Hills/Prairie Coteau region. Totals up to a tenth of an inch are expected east of the Missouri River.

- Active pattern continues with additional chances for rain arriving Monday and continuing through Tuesday. There is a 70-90% chance to see a half inch or more of rain between the Missouri and James Rivers and north of Hwy 14, with rainfall totals decreasing moving south.

- Expect temperatures near normal for the next few days, with highs in the upper 60s to low 70s. Signs point towards a slight cooldown by mid-week next week.

DISCUSSION

Issued at 1254 AM CDT Sat Sep 26 2026

As of 1 AM CDT, rain is starting to move north into eastern SD. This is much later than expected from previous forecasts and will affect rainfall totals. It also looks like the main body of the precipitation will be farther east than expected, further affecting totals for areas along and west of the Sisseton Hills/Prairie Coteau. Temperatures across the area are in the upper 50s to low 60s with winds out of the southeast at generally less than 10 mph.

Our next chance for precipitation will be Monday through Tuesday as a low moves southwest to northeast across the Dakotas. Precipitation amounts are expected to be higher with this event than our rain today. Chance of more than half an inch are around 70-90% between the Missouri and James Rivers north of Hwy 14 through Tuesday morning. This is when most of the precipitation will fall, rain will linger across eastern SD into the afternoon with minor additional accumulations. This will be a more widespread event with precipitation starting in central SD late Sunday night/early Monday morning and moving east across the forecast area. Rain should come to an end over eastern SD Tuesday afternoon.

Temperatures through the period will be right around to slightly above average, particularly across central SD. There is a cooling trend towards the end of the forecast, but its pretty slight and only a few degrees below normal. Winds Monday afternoon south of Hwy 14 and east of the James could gust up to 30 mph, locally higher in south central SD. Other than this, winds look normal through the 7 day forecast.

AVIATION /12Z TAFS THROUGH 12Z SUNDAY/

Issued at 617 AM CDT Sat Sep 26 2026

Terminals KABR,KATY,KPIR,KMBG

IFR/MVFR conditions are expected to prevail for the next 24 hours at KABR and KATY in drizzle and fog. KPIR and KMBG will see improvement after 21z Saturday to MVFR and then VFR. Fog may develop early Sunday and drop sites back down.

ABR WATCHES/WARNINGS/ADVISORIES

SD...None. MN...None.