Clinton, Iowa 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

534
FXUS63 KDVN 251022
AFDDVN

Area Forecast Discussion
National Weather Service Quad Cities IA IL
522 AM CDT Sun May 25 2025

.KEY MESSAGES...

- Expect scattered showers (15-30% coverage - maybe higher in a
  narrow axis) in southern areas today, generally south of
  I-80, with wetting rains expected to be in narrow west to east
  swaths.

- Dry and pleasant weather for Memorial Day.

- Active pattern returns Monday night, with the next best chance
  (30- 50%) for appreciable rain on Tuesday.

&&

.SHORT TERM /THROUGH TUESDAY/...
Issued at 201 AM CDT Sun May 25 2025

Midlevel clouds continue to stream east over the area early this
morning, generally holding our CWA in the mid 50s northeast to lower
60s central and southwest. Much like last night, radar is showing a
narrow band of FGEN forcing, set up from Omaha NE to the southeast
tip of Iowa.  Saturation has been much better towards Nebraska with
moderate rain in place, but farther east, this has been a trace
event thus far this morning in southern Iowa. Today, this band of
forcing should remain in place, with a wave of saturation expected
to ripple along east through our CWA through mid morning. A narrow
band of rain showers is expected, and that may require a very narrow
grid update for high pops today, while the remainder of the area
sees dry weather today.   With cloud cover more consistent in the
south today, highs are only expected to reach the lower 60s, while
north of I-80 sees highs of upper 60s to near 70.

Tonight, with clearing skies lows again will drop cooler similar to
two nights ago.  Lows in the lower 40s northeast to upper 40s
southwest are expected.

Memorial Day looks very pleasant!  Highs in the upper 60s to lower
70s with east winds around 10 mph through the day are confidently
forecast. Increasing clouds will provide at least a mostly cloudy
afternoon, but any rainfall should hold off until after 6 PM in the
far south.

Monday night and Tuesday, a broad trof of low pressure aloft, with a
weak surface low pressure sliding just east of the area, will move
through, with 20-30% pops Monday night in the south, ramping up to
30-60% chances by afternoon Tuesday. Moisture will remain limited
for this forcing, but a diurnal uptick as the trof passes by Tuesday
afternoon will be our best coverage of showers and weak
thunderstorms in our week`s forecast. Clouds and showers Tuesday
will hold back highs once again to the 60s in all locations.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
Issued at 201 AM CDT Sun May 25 2025

Tuesday night and Wednesday, the upper trof will lift northeast of
the CWA, with shower chances continuing at 15-25% in the north and
dry south.  A return of pleasant temperatures is again expected,
with Wednesday`s highs in the upper 60s to low 70s.

A milder regime is forecast for late week, as highs return to the
mid 70s Thursday, and upper 70s to low 80s for Friday and Saturday.
Models have backed off (except 00z EC) on the upper low pivoting
over the region in this period, and shower chances are nearly out of
the forecast now, holding only a 20% chance for Thursday, as warmer
air could fire up a diurnal shower or storm.  Upper level heights
will continue to rise towards the end of the period, leading to
above normal temperatures into the upcoming weekend.

&&

.AVIATION /12Z TAFS THROUGH 12Z MONDAY/...
Issued at 521 AM CDT Sun May 25 2025

Consistently VFR weather remains expected over the area
through tonight, with mainly mid clouds streaming eastward. A
few bands of light rain area possible, mainly south of
Interstate 80, where the BRL TAF will included light rain in
the early morning hours. Cigs may lower to around 3500 ft during
this light rain possibility at BRL, but dry air at lower levels
should continue to keep VFR weather in place. Farther north,
very little hourly change in weather is expected, as mid clouds
decrease by early Sunday afternoon.


&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...None.
IL...None.
MO...None.

&&

$$

SHORT TERM...Ervin
LONG TERM...Ervin
AVIATION...Ervin