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Ames, Iowa 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Ames IA
National Weather Service Forecast for: Ames IA
Issued by: National Weather Service Des Moines, IA
Updated: 2:18 am CST Feb 7, 2025
 
Overnight

Overnight: Mostly cloudy, with a low around 18. North northwest wind 3 to 6 mph.
Mostly Cloudy

Friday

Friday: Cloudy through mid morning, then gradual clearing, with a high near 38. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Gradual
Clearing

Friday
Night
Friday Night: A slight chance of freezing rain after 3am.  Mostly cloudy, with a low around 25. East southeast wind 6 to 8 mph.  Chance of precipitation is 10%.
Mostly Cloudy
then Slight
Chance
Freezing Rain
Saturday

Saturday: Snow likely, possibly mixed with freezing rain before noon, then a chance of snow.  Cloudy, with a high near 32. East wind 7 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 60%. Little or no ice accumulation expected.  New snow accumulation of less than a half inch possible.
Wintry Mix
Likely then
Chance Snow
Saturday
Night
Saturday Night: Partly cloudy, with a low around 10. North northwest wind 6 to 11 mph, with gusts as high as 18 mph.
Partly Cloudy

Sunday

Sunday: Partly sunny, with a high near 27.
Partly Sunny

Sunday
Night
Sunday Night: Partly cloudy, with a low around 12.
Partly Cloudy

Monday

Monday: Mostly sunny, with a high near 31.
Mostly Sunny

Monday
Night
Monday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 6.
Chance Snow

Lo 18 °F Hi 38 °F Lo 25 °F Hi 32 °F Lo 10 °F Hi 27 °F Lo 12 °F Hi 31 °F Lo 6 °F

 

Overnight
 
Mostly cloudy, with a low around 18. North northwest wind 3 to 6 mph.
Friday
 
Cloudy through mid morning, then gradual clearing, with a high near 38. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Friday Night
 
A slight chance of freezing rain after 3am. Mostly cloudy, with a low around 25. East southeast wind 6 to 8 mph. Chance of precipitation is 10%.
Saturday
 
Snow likely, possibly mixed with freezing rain before noon, then a chance of snow. Cloudy, with a high near 32. East wind 7 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Saturday Night
 
Partly cloudy, with a low around 10. North northwest wind 6 to 11 mph, with gusts as high as 18 mph.
Sunday
 
Partly sunny, with a high near 27.
Sunday Night
 
Partly cloudy, with a low around 12.
Monday
 
Mostly sunny, with a high near 31.
Monday Night
 
A 40 percent chance of snow. Mostly cloudy, with a low around 6.
Tuesday
 
Mostly cloudy, with a high near 15.
Tuesday Night
 
Mostly cloudy, with a low around 4.
Wednesday
 
A 30 percent chance of snow. Mostly cloudy, with a high near 19.
Wednesday Night
 
A 30 percent chance of snow. Mostly cloudy, with a low around 4.
Thursday
 
Mostly sunny, with a high near 22.

 

Forecast from NOAA-NWS for Ames IA.

Weather Forecast Discussion
588
FXUS63 KDMX 070442
AFDDMX

Area Forecast Discussion
National Weather Service Des Moines IA
1042 PM CST Thu Feb 6 2025

 ...Updated for the 06z Aviation Discussion...

.KEY MESSAGES...

- Wind advisory remains in effect through 6 pm.

- Light snow accumulations possible over northern Iowa Friday
  night and Saturday, light icing possible central and south.

- Colder next week with a few periods with light snow chances,
  mainly central and south.

&&

.DISCUSSION...
Issued at 253 PM CST Thu Feb 6 2025

System passing through Minnesota and Wisconsin this afternoon is
also clipping into northern Iowa. This system is bringing drier air
along with deepening mixing and strong subsidence to the northern
portion of the state. Modest cold advection is occurring with the
passing of an attendant boundary. This is leading to gusty
west/northwest winds which are primarily fueled by the mixed layer
winds that are peaking near 45 kts over the northern portion of the
state. These max mixed layer winds diminish quickly south into
central Iowa. For example, the peak mixed layer winds near Des
Moines are around 22 kts. A wind advisory remains in effect for
portions of northern Iowa through 00z with high pressure arriving
from the west and decoupling should begin to occur shortly after
that time with the peak mixed layer winds off to the east as well.

The area of high pressure will continue to ridge over Iowa tonight.
Expecting mid-level cloudiness to increase overnight and these
clouds are already evident over Wyoming and Idaho. These clouds
should arrive as the light winds arrive so they should act as a
blanket and prevent widespread radiational cooling overnight. A few
flurries may occur over the far northwest into Friday morning but
dry air below the cloud base should evaporate most of this.
Otherwise, Friday should be uneventful with highs in the 30s along
with some peaks at the sun.

The main forecast challenge is the precipitation chances Friday
night into Saturday. These precipitation chances are from two
separate systems, one in the northern stream and the other in the
southern stream. These systems will not phase until well east of
Iowa. The northern stream system is expected to bring light snow to
parts of northern Iowa with some accumulations possible. The
southern stream precipitation will be mainly to the south of Iowa
across central Missouri and into the Ohio Valley. The concern is a
thickening low level stratus field and the return of freezing
drizzle potential. Much of the forcing south of the northern Iowa
snow, is focused in a thermal layer that is warmer than -5C, which
is well within the supercooled water droplet range and a low
residence of ice crystals. Therefore, have increased the coverage of
freezing drizzle for late Friday night into Saturday morning. Some
light snow, with snow crystal morphology again favoring snow needles
may mix with the freezing drizzle as the saturated layer could clip
into the -6C to -7C range which increases ice crystal potential.
Stay tuned if traveling during this time period. At this time, it
does appear that icing is possible if enough near surface saturation
occurs.

Colder weather will follow for Sunday and into next week. There
appear to be several chances for light snow into next week pending
the influence of Arctic high pressure to the north. Often times snow
chance trends in guidance is to the south due to northern dry air
from these highs. We will keep watching this. Should the snow stay
over parts of Iowa, it would have a deep dendritic layer available.
Stay tuned!

&&

.AVIATION /06Z TAFS THROUGH 06Z SATURDAY/...
Issued at 1042 PM CST Thu Feb 6 2025

VFR ceilings will spread across Iowa overnight and persist into
Friday, mainly over northern Iowa. Visibilities are likely to
remain unrestricted for the duration of the forecast. Surface
winds become light and variable through daybreak and begin to
slowly increase from the east southeast by Friday afternoon into
the evening.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...None.

&&

$$

DISCUSSION...Donavon
AVIATION...Cogil
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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