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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: 9:27 pm CDT Jun 1, 2025
 
Tonight

Tonight: Partly cloudy, with a low around 47. Northeast wind around 5 mph becoming south southeast after midnight.
Partly Cloudy


Monday

Monday: Mostly sunny, with a high near 82. South southwest wind 5 to 10 mph.
Mostly Sunny


Monday
Night
Monday Night: Partly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 15 mph.
Partly Cloudy


Tuesday

Tuesday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 88. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 20%.
Mostly Sunny
then Slight
Chance
T-storms and
Breezy
Tuesday
Night
Tuesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 64. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Chance
T-storms

Wednesday

Wednesday: Showers and possibly a thunderstorm.  High near 76. Chance of precipitation is 80%.
Showers


Wednesday
Night
Wednesday Night: Showers likely and possibly a thunderstorm.  Cloudy, with a low around 57. Chance of precipitation is 70%.
Showers
Likely

Thursday

Thursday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 72.
Chance
Showers then
Chance
T-storms
Thursday
Night
Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 56.
Chance
T-storms

Lo 47 °F Hi 82 °F Lo 62 °F Hi 88 °F Lo 64 °F Hi 76 °F Lo 57 °F Hi 72 °F Lo 56 °F

 

Tonight
 
Partly cloudy, with a low around 47. Northeast wind around 5 mph becoming south southeast after midnight.
Monday
 
Mostly sunny, with a high near 82. South southwest wind 5 to 10 mph.
Monday Night
 
Partly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 15 mph.
Tuesday
 
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 88. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tuesday Night
 
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
 
Showers and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.
Wednesday Night
 
Showers likely and possibly a thunderstorm. Cloudy, with a low around 57. Chance of precipitation is 70%.
Thursday
 
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72.
Thursday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Friday
 
A chance of showers. Mostly sunny, with a high near 73.
Friday Night
 
A chance of showers. Mostly clear, with a low around 56.
Saturday
 
Mostly sunny, with a high near 75.
Saturday Night
 
A chance of showers. Partly cloudy, with a low around 58.
Sunday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 77.

 

Forecast from NOAA-NWS for Crown Point IN.

Weather Forecast Discussion
458
FXUS63 KLOT 012328
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
628 PM CDT Sun Jun 1 2025

.KEY MESSAGES...

- Hazy skies prevail through Monday from Canadian wildfire
  smoke. Patchy smoke possible near the surface Monday
  afternoon.

- Above average temperatures expected Monday and Tuesday

- A period of showers and storms expected late Tuesday through
  early Wednesday.

- Much lower confidence, but a second round of showers and
  t-storms is possible late Wednesday into Thursday.

&&

.DISCUSSION...
Issued at 216 PM CDT Sun Jun 1 2025

Quiet conditions remain through the overnight, thanks to the
high pressure in the region. Easterly winds will be light
tonight before veering to the southwest on Monday. No
precipitation expected until Tuesday night.

An upper-level ridge over the Plains will slowly continue to
move east toward the Great Lakes, keeping north to northwest
flow aloft. This keeps the main impacts in the short term
forecast centered on the smoke from the Canadian wildfires
moving over the area (despite surface winds out of the southwest
on Monday). Models are still suggesting that the higher
concentration of smoke particles will move over northern
Illinois tomorrow. Model soundings are suggesting diurnal mixing
could be fairly deep tomorrow with a very weak inversion around
5000 feet. With better agreement in the near surface smoke
models suggesting that mixing could bring at least some of the
smoke down to the surface, it was decided to add patchy smoke to
the forecast for all areas except Ford, Iroquois and the
counties in northwest Indiana. Smoke getting to those areas will
be monitored, but the plume might not reach there until later
when it is a less favorable time of day for deeper boundary
layer mixing. This will remain a lower confidence forecast given
the uncertainty on how deep the mixing will be. Nevertheless,
Hazy skies are expected to persist across the entire area during
what would normally be a period with little cloud cover.
Lastly, the Euro and the NBM are still keeping warm temperatures
across the area, other models are starting to pick up on the
fact that with hazy/smoky skies, max temperatures originally
anticipated may not be realized. While temperatures are still
currently expected to reach the 80s, depending on the smoke
concentration, they may struggle to get to the mid to upper
80s.

The upper-level flow pattern finally shifts westerly Monday
night, then southwesterly Tuesday morning as the next upper-
level low moves over the Hudson Bay extending over the northern
Plains. There is higher confidence that this will effectively
(finally) push the smoke east of the area. Although there is
lower confidence in the exact timing of improvement in hazy sky
conditions, an overall improving trend is anticipated through
the day Tuesday. With smoke exiting the area, there is better
chances for temperatures reaching into the upper 80s with a
non-zero chance of a couple of 90 degree readings.

An upper-level short wave trough over southern Colorado
(embedded in the longer wave connected to the upper level low)
will move toward the Great Lakes Tuesday night and Wednesday
morning. A surface cold front extending from Lake Superior to
Kansas will move eastward overnight providing ample forcing for
showers and thunderstorms to develop. Lapse rates are looking
fairly weak, and the system will be passing over during a less
than favorable time. Given the lower instability, there is lower
confidence in the severe risk on Tuesday though it cannot be
completely ruled out. Especially for area west of the Fox Valley
where it might arrive earlier in the afternoon.

Models are still disagreeing on how quick this system exits.
The GFS solutions keep this fairly progressive which would
result in drier conditions around the Rockford Metro while
showers continue around and southeast of Interstate 55 on
Wednesday. Then the next upper-level short wave from over the
Desert Southwest would arrive late Thursday night into Friday
for another round of showers and storms. However, the Euro has a
much slower progression suggesting it stalling and turning into
a pseudo stationary front over the southeastern portions of the
CWA, before the next short wave kicks it east and brings rain
on Friday. This provides lower confidence in the overall trend
and prevented making much adjustments to the PoPs that the NBM
provided. Considering how dry the forecast has been as of
recently, the main forecast note is the pattern is looking
favorable for inclement weather from mid week and into the
weekend. It is the timing of rainy versus dry periods that will
need to be ironed out.

Temperatures return to more seasonable values for the second
half of the week and into the weekend. Shower chances cannot be
completely ruled out next weekend, but current guidances favors
more drier periods than wet.

DK

&&

.AVIATION /00Z TAFS THROUGH 06Z MONDAY/...
Issued at 628 PM CDT Sun Jun 1 2025

Forecast concern for the terminals...

- Increasing Canadian wildfire smoke aloft tonight which may
  result in periods of reduced visibility Monday.

A weak surface high continues to reside over the Great Lakes
which will maintain dry and generally VFR conditions through the
period. That said, there is a lake breeze moving west across
northern IL which will move through RFD between 130z and 02z
this evening causing winds to turn east-southeast in its wake.
Otherwise, expect light easterly winds to become more variable
overnight before settling into a south-southwest direction
Monday morning. Wind speeds will also increase on Monday as
deeper mixing commences which should allow occasional mid to
upper teen gusts to develop Monday afternoon. As gusts subside
Monday evening, there is a chance that wind directions may
briefly (an hour or two at most) become southeasterly but
suspect the overall prevailing direction will be southwest.

Finally, smoke from ongoing wildfires in Canada will remain
overhead through the TAF period as well. The upper trough over
the eastern CONUS that has been advecting the smoke into our
area will gradually move eastward tonight into the day on Monday
which will result in more westerly mid-level winds across Canada
and the Upper Midwest. Therefore, suspect that the heavier
concentrations of smoke (currently in the Dakotas and MN) will
move more into WI with the plume of smoke in IA being more of
our issue. While this plume will still result in hazy VFR skies,
confidence in surface smoke concentration remains low. That
said, have decided to maintain the SCT025 mention for the
off chance a higher smoke concentration results in slightly
lower ceilings in addition to some minor visibility reductions
at the surface. Will continue to watch trends this evening and
overnight and make adjustments as needed.

Yack

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...None.
IN...None.
LM...None.

&&

$$

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