Janesville Illinois Weather Forecast Discussion

029
FXUS63 KILX 101103
AFDILX
Area Forecast Discussion...Updated Aviation
National Weather Service Lincoln IL
603 AM CDT Fri Oct 10 2025
.KEY MESSAGES...
- Light showers generating up to a tenth of an inch of rainfall
  will decrease in coverage as they move east this morning. The
  highest chances for measurable rain (15-30%) will be west of
  roughly I-55.
- There is a low (10-15%) probability of a stray shower Monday
  and Tuesday. Otherwise, expect dry and mild conditions through
  at least the middle of next week.
&&
.DISCUSSION...
Issued at 127 AM CDT Fri Oct 10 2025
***** CLOUDY WITH A FEW SHOWERS FRIDAY *****
Early Friday morning, WPC analyzed a cold front extending from
Minnesota southwestward across Nebraska. Ahead of it, a narrow
corridor of warm and moisture advection has brought enough moisture
for the front to spark some isolated showers across Iowa and
Wisconsin. Locally, high pressure has promoted light winds and clear
skies which have allowed temperatures to sink like a rock since
sundown. The forecast for patchy frost remains on track across our
east where dewpoints are in the mid 30s, while cloud cover and
southerly winds will overspread areas west of roughly I-55 before
daybreak - preventing temperatures from getting cold enough for
frost.
CAMs suggest the widely scattered upstream showers will generally
begin a waning trend as they cross the Mississippi River into a
progressively more dry airmass; ILX`s 00z raob, for example,
featured a PWAT of 0.33", which is below the 10th percentile of
climatology (0.40"). The highest chance of measurable rain will be
west of I-55 and especially west of the IL River where HREF, REFS,
and NBM suggest a 15-30% chance. In addition, these showers and
attendant rain amounts will be light given the (1) dry environmental
airmass and (2) lack of instability. HREF and REFS LPMM confine
amounts to under a tenth of an inch. Some guidance, most
aggressively the NAM, indicates potential for drizzle this evening
into tonight as prob cloud ice diminishes, 0-1km mean RH exceeds
85%, and some weak negative (i.e., upward) omega coincide, though
HREF is only advertising 10-20% chances for IFR (

NWS ILX Office Area Forecast Discussion