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Castle Rock, Colorado 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Castle Rock CO
National Weather Service Forecast for: Castle Rock CO
Issued by: National Weather Service Denver-Boulder, CO
Updated: 8:23 am MDT Apr 4, 2025
 
Today

Today: Snow likely, mainly after noon.  Cloudy, with a high near 34. Breezy, with a north wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 70%. Total daytime snow accumulation of 1 to 2 inches possible.
Snow Likely
and Breezy

Tonight

Tonight: Snow likely, mainly before 10pm.  Cloudy, with a low around 22. Blustery, with a north northeast wind 6 to 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Snow Likely
and Blustery
then Chance
Snow
Saturday

Saturday: A 20 percent chance of snow showers before noon.  Mostly cloudy, then gradually becoming sunny, with a high near 39. North wind 5 to 7 mph.
Slight Chance
Snow Showers
then Mostly
Sunny
Saturday
Night
Saturday Night: Mostly clear, with a low around 21. North wind 5 to 7 mph becoming southwest after midnight.
Mostly Clear

Sunday

Sunday: Sunny, with a high near 55. Light and variable wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 15 mph.
Sunny

Sunday
Night
Sunday Night: Mostly clear, with a low around 30.
Mostly Clear

Monday

Monday: Sunny, with a high near 64.
Sunny

Monday
Night
Monday Night: Partly cloudy, with a low around 37.
Partly Cloudy

Tuesday

Tuesday: Partly sunny, with a high near 69.
Partly Sunny

Hi 34 °F Lo 22 °F Hi 39 °F Lo 21 °F Hi 55 °F Lo 30 °F Hi 64 °F Lo 37 °F Hi 69 °F

Hazardous Weather Outlook
 

Today
 
Snow likely, mainly after noon. Cloudy, with a high near 34. Breezy, with a north wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
 
Snow likely, mainly before 10pm. Cloudy, with a low around 22. Blustery, with a north northeast wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Saturday
 
A 20 percent chance of snow showers before noon. Mostly cloudy, then gradually becoming sunny, with a high near 39. North wind 5 to 7 mph.
Saturday Night
 
Mostly clear, with a low around 21. North wind 5 to 7 mph becoming southwest after midnight.
Sunday
 
Sunny, with a high near 55. Light and variable wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 15 mph.
Sunday Night
 
Mostly clear, with a low around 30.
Monday
 
Sunny, with a high near 64.
Monday Night
 
Partly cloudy, with a low around 37.
Tuesday
 
Partly sunny, with a high near 69.
Tuesday Night
 
Partly cloudy, with a low around 39.
Wednesday
 
Sunny, with a high near 71.
Wednesday Night
 
Mostly clear, with a low around 41.
Thursday
 
Sunny, with a high near 73.

 

Forecast from NOAA-NWS for Castle Rock CO.

Weather Forecast Discussion
208
FXUS65 KBOU 041015
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
415 AM MDT Fri Apr 4 2025

.KEY MESSAGES...

- Areas of fog early this morning, especially east of Fort Morgan
  and Limon. Patchy drizzle with temperatures mostly above
  freezing.

- Snow showers will develop by midday, continuing through much of
  tonight. Generally light snow accumulations with little or no
  accumulation below 6000 feet. Heavier amounts possible in the
  foothills west and southwest of Denver, but limited impacts.

- Warmer and drier next week.

&&

.SHORT TERM /Through Tonight/...
Issued at 415 AM MDT Fri Apr 4 2025

As expected, we`re sitting in rich moisture, but there`s not
really any forcing for precipitation right now. Winds are light
and the existing cloud deck has been pretty steady state
overnight. There is some fog in the northeast corner where dew
points are a little higher. There`s likely some patchy dense fog
on ridges/upslope areas and drizzle as well. Temperatures are
mostly above freezing and surfaces should still be warm enough to
prevent icing in most spots.

The main thing happening today is accelerating north winds as high
pressure builds into the northern plains and low pressure moves
south of Colorado. This will produce some low level convergence,
especially against the foothills west and southwest of Denver and
the Palmer Divide. There will also be some QG lift that should
redevelop the clouds above the surface moisture, and help produce
light rain or snow in the boundary layer. However, the QG forcing
is weak and the moisture above the ground is looking less and
less, so this may wind up being mainly a boundary layer event.
That could reduce or eliminate the precipitation away from the
terrain. We still think there`s a pretty good chance of at least a
little precipitation across the area, but we nudged PoPs down a
little and our forecast QPF is pretty light except for the
upslope areas. Temperatures also look slightly warmer than
previously forecast, though they won`t rise much during the day.
Still probably mostly snow for Denver, but another degree or two
will further reduce the chance of accumulation. Once again, the
overlap between the waning lift and a little cooling in the
evening will give the best chance for any accumulation east of the
mountains. There could still be some impacts in the foothills
which could have steady light to moderate snow for a while, and
maybe also south of Castle Rock with the colder temperatures and
steady upslope.

Even if we don`t wind up having much precipitation, it will be a
cold and windy day to be outside, with afternoon temperatures in
the 30s and 15 to 30 mph winds in Denver producing wind chills
in the 20s. A few raindrops of snowflakes in the air will add to
the cold!

&&

.LONG TERM /Saturday through Thursday/...
Issued at 415 AM MDT Fri Apr 4 2025

On Sat, some lingering light snow may occur thru mid morning mainly
in the mountains south of I-70 and over the Palmer Divide.  By aftn,
there will still be some lingering moisture in the mtns which will
lead to a chc of light snow showers.  Across the plains, it will be
dry.  Temps will remain below normal with highs in the 40`s across
nern CO.

For Sunday, dry northerly flow aloft will be over the area.
Temperatures will rebound back to seasonal levels across nern CO.
Looking ahead to Mon thru Wed, a flat upper level ridge will be
over the area with mainly zonal flow aloft. Cross-sections don`t
show much moisture embedded in the flow so will keep things mainly
dry. As far as temps, should see a gradual warming trend as
downslope flow develops. Highs across the plains will be in the
60`s on Mon with lower to mid 70`s for Tue and Wed.

&&

.AVIATION /12Z TAFS through 12Z Saturday/...
Issued at 415 AM MDT Fri Apr 4 2025

Fog and low clouds will persist in the Denver area this morning.
IFR conditions will prevail, but there will be areas of LIFR
ceilings. Thicker fog with visibilities below a mile now looks
unlikely. A cold front will pass between 15z and 17z with north
winds gusting to around 25 knots. This will likely (70%) break up
the low clouds with MVFR conditions prevailing behind the front.
Snow will redevelop though, with areas of IFR conditions again
after 19z. Snow accumulations in the Denver area are expected to
be an inch or less and mainly on grassy areas.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

SHORT TERM...Gimmestad
LONG TERM...RPK
AVIATION...Gimmestad
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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