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Crown Point, Indiana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Crown Point IN
National Weather Service Forecast for: Crown Point IN
Issued by: National Weather Service Chicago, IL
Updated: 5:07 pm CDT Jul 5, 2025
 
Tonight

Tonight: A 20 percent chance of showers and thunderstorms after 3am.  Increasing clouds, with a low around 72. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Partly Cloudy
then Slight
Chance
T-storms
Sunday

Sunday: Showers and thunderstorms likely, mainly after 1pm.  Mostly cloudy, with a high near 84. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
T-storms
Likely
Sunday
Night
Sunday Night: A 40 percent chance of showers and thunderstorms, mainly before 4am.  Mostly cloudy, with a low around 66. North wind 5 to 10 mph, with gusts as high as 15 mph.
Chance
T-storms

Monday

Monday: A 10 percent chance of showers and thunderstorms before 7am.  Partly sunny, with a high near 80. North wind 5 to 10 mph, with gusts as high as 15 mph.
Slight Chance
T-storms then
Partly Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 63. North northeast wind 5 to 10 mph becoming light and variable  in the evening.
Mostly Clear

Tuesday

Tuesday: Mostly sunny, with a high near 87.
Mostly Sunny

Tuesday
Night
Tuesday Night: A slight chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. Chance of precipitation is 20%.
Slight Chance
T-storms

Wednesday

Wednesday: A chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 85.
Mostly Sunny
then Chance
T-storms
Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 66.
Mostly Cloudy

Lo 72 °F Hi 84 °F Lo 66 °F Hi 80 °F Lo 63 °F Hi 87 °F Lo 68 °F Hi 85 °F Lo 66 °F

Hazardous Weather Outlook
 

Tonight
 
A 20 percent chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 72. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
 
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 84. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
A 40 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 66. North wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
 
A 10 percent chance of showers and thunderstorms before 7am. Partly sunny, with a high near 80. North wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
 
Mostly clear, with a low around 63. North northeast wind 5 to 10 mph becoming light and variable in the evening.
Tuesday
 
Mostly sunny, with a high near 87.
Tuesday Night
 
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 20%.
Wednesday
 
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
Wednesday Night
 
Mostly cloudy, with a low around 66.
Thursday
 
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Thursday Night
 
Partly cloudy, with a low around 66.
Friday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Friday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Saturday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Crown Point IN.

Weather Forecast Discussion
766
FXUS63 KLOT 052007
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
307 PM CDT Sat Jul 5 2025

.KEY MESSAGES...

- Shower and thunderstorm chances return this evening especially
  across northwest IL. Waves of widely scattered showers and
  storms are expected in the general region overnight into
  Sunday. Torrential downpours will provide localized relief to
  ongoing drought conditions, and some areas will stay
  completely dry.

- A period of dry and slightly cooler weather is on track to
  start the upcoming week.

&&

.DISCUSSION...
Issued at 307 PM CDT Sat Jul 5 2025

Through Sunday:

A hot well mixed boundary layer has allowed surface dewpoints to
mix out into the mid 60s as air temperatures have warmed into the
low to mid 90s. The lower dewpoints have acted to hold heat
indices in check, with readings generally right around the actual
surface temperature. The poor low-level moisture has also helped
cap the airmass to thunderstorm development this afternoon. While
this is expected to continue to be the general trend through the
remainder of the afternoon, we will be monitoring the increasing
threat for scattered thunderstorms across northwestern IL into
early this evening (after 6 PM).

A recent surface analysis indicates that a much richer low-level
airmass (dew points in the low to mid 70s) currently resides to
our west in the vicinity of an a surface frontal trough and mid-
level impulse over IA. The eastern periphery of the richer
moisture is already beginning to work into far northwestern IL
near the Mississippi and has recently helped spark some showers.
These showers look to move into western parts of Lee Ogle and
Winnebago counties prior to 4 PM, though the threat of thunder
looks to remain low as they move into a increasingly capped
envionrment with eastward extent.

The main area of storms we are watching is the line of ongoing
storms over IA. These storms are expected to continue increasing
in coverage as they shift east-northeastward into northwestern IL
late this afternoon and early evening. There continues to be a
low threat for a few of these storms to organize enough to produce
instances of localized strong wind gusts, though this threat is
expected to largely remain across northwestern IL (generally
along and west of I-39) through 10 PM this evening. Overall, poor
mid-level lapse rates and the loss of daytime heating should
ultimately result in these storms weakening with eastward extent
across northern IL later this evening. While this will curtail
the severe threat and decrease the coverage of showers and
storms after 10 PM, some widely scattered activity may continue
to fester in the area overnight, especially in advance of the
next impulse expected to move out of northern MO. The main
threat with any showers or storms overnight would be locally
heavy rainfall given the notable increase in moisture
(precipitable water values ~2").

Shower and storm coverage looks to be the lowest for a period
Sunday morning, before activity begins to increase in coverage
along the surface frontal boundary by midday/early afternoon.
Rich moisture overhead (precipitable water values ~2") in
advance of this front will support very efficient rainfall
production, and thus support torrential downpours within these
showers and storms. Relatively slow storm motions and possible
training cells may thus support some localized hydro concerns.
There continues to be differences in the timing of the cold
front dropping down southern Lake Michigan, and this ultimately
leads to lower confidence with the extent of the heavy rain and
hydro threat over much of the Chicago metro area. If the frontal
timing ends up slower and holding off until mid afternoon, then
the heavy rain and hydro threat will be higher in the Chicago
area. Otherwise, an early frontal timing should keep these
threats largely south of I-80 Sunday afternoon.

KJB


Sunday Night through Saturday:

The mid-level trough responsible for potential convection over
the area on Sunday will clear the area to the southeast by
Sunday evening. A trailing and slow-moving cold front will
continue to support scattered showers and some thunderstorms
south of a Dixon to Chicago line Sunday evening before
gradually suppressing activity farther to the south overnight.
Poor mid-level lapse rates will limit coverage of thunderstorms,
but slow storm motions combined with PWATs to around 2" will
yield locally heavy rain with any thunderstorm or stronger
shower.

The cold front is expected to clear the CWA to the south no
later than Monday morning as a weak surface ridge builds across
the western Great Lakes. This will favor dry conditions with
notably less humidity for much of the area on Monday. Similar
conditions should persist through the day on Tuesday as
consensus guidance stalls the front well south of the area.
Persistent onshore and stronger gradient flow behind the front
may also result in higher waves and dangerous swimming
conditions on Monday.

A low-amplitude trough drifting across the Upper Mississippi
River Valley on Wednesday will bring increasing chances for
showers and some storms Tuesday night into Wednesday night.
Mostly dry conditions are then favored Thursday and Friday,
though decaying convection could survive eastward into the CWA
on the eastern periphery of a central CONUS ridge and within a
more favorable moisture reservoir.

Kluber

&&

.AVIATION /18Z TAFS THROUGH 00Z MONDAY/...
Issued at 1224 PM CDT Sat Jul 5 2025

Breezy southwest winds and VFR conditions prevail early this
afternoon but the forecast will become more challenging with
time as low pressure works across the area bringing several
possibilities for showers and thunderstorms as well as MVFR or
even a period of IFR ceilings. A corridor of showers and
thunderstorms across eastern and central Iowa is making eastward
progress while a band of cumulus is developing along and east
of the Mississippi River in western IL. Shower/thunder chances
will move into RFD late this afternoon or first thing this
evening, but coverage and intensity will begin to fade with time
to the east. As a result, have maintained PROB30 potential
across the Chicago area terminals from mid evening into the
overnight and may need to tweak the start time a bit. Should see
a minimum in activity Sunday morning but one trough axis will
be lingering across the Chicago and NW IN terminals with a
secondary trough axis/front approaching from the north. The
thunderstorm forecast will need refinement but it appears that
midday/early afternoon will be the favored period for showers
and thunderstorms in the Chicago area, while they will be south
and east of RFD. There is still a chance that the Chicago
terminals remain just north of any activity. Activity should
then settle further to the south by mid or late afternoon with
winds turning northeasterly.

Given the moist atmosphere and upstream trends relative to the
position of the first trough passage, MVFR or even IFR stratus
is expected to move in/develop late tonight or early Sunday
morning and probably linger into midday. Confidence is somewhat
limited on the details but was sufficient to continue with the
possibility in the forecast for now.

MDB

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...None.
IN...None.
LM...Small Craft Advisory until 8 PM CDT this evening for the IL
     nearshore waters.

&&

$$

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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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