Saint Louis, Missouri Weather Conditions

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Current Conditions

  • 33°
  • Mostly Cloudy
  • Wind: ENE 5 mph
  • Humidity: 75%
  • Visibility: 7.0 miles
  • Dew Point: 26°
  • Pressure: 30.31 in. 0
  • Heat Index: 29

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Next 12 Hours

6  am
9  am
12  pm
3  pm
6  pm
Fog
Fog
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Overcast
Overcast
32°
32°
36°
37°
34°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Mostly Cloudy
  • High: 39 °
  • Low: 32 °
  • Mostly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 43 °
  • Low: 32 °
  • Partly Cloudy
  • Sunday
  • Mostly Cloudy
  • High: 43 °
  • Low: 36 °
  • Mostly Cloudy
  • Monday
  • Overcast
  • High: 46 °
  • Low: 39 °
  • Overcast
  • Tuesday
  • Overcast
  • High: 43 °
  • Low: 32 °
  • Overcast

Forecast for Saint Louis, Missouri

Updated: 3:00 AM CST on December 19, 2014

  • Friday

    Mostly cloudy. Fog early. High of 39F. Winds less than 5 mph.

  • Friday Night

    Overcast. Low of 32F. Winds less than 5 mph.

  • Saturday

    Partly cloudy. High of 43F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy in the evening, then overcast. Low of 32F. Winds less than 5 mph.

  • Sunday

    Overcast. High of 43F. Winds from the SSE at 5 to 10 mph.

  • Sunday Night

    Overcast. Low of 36F. Winds from the SSE at 5 to 10 mph.

  • Monday

    Overcast. High of 46F. Breezy. Winds from the South at 10 to 20 mph.

  • Monday Night

    Overcast with a chance of rain after midnight. Low of 39F. Winds from the SSW at 10 to 15 mph. Chance of rain 20%.

  • Tuesday

    Overcast. High of 43F. Winds from the WNW at 10 to 15 mph.

  • Tuesday Night

    Mostly cloudy. Low of 32F with a windchill as low as 21F. Breezy. Winds from the WNW at 15 to 20 mph.

  • Wednesday

    Partly cloudy. High of 39F with a windchill as low as 23F. Breezy. Winds from the West at 15 to 20 mph.

  • Wednesday Night

    Partly cloudy. Low of 30F with a windchill as low as 23F. Winds from the WSW at 10 to 15 mph.

  • Thursday

    Partly cloudy. Fog early. High of 39F. Winds from the SSW at 5 to 15 mph.

  • Thursday Night

    Overcast. Fog overnight. Low of 28F. Winds from the South at 10 to 15 mph.

  • Friday

    Mostly cloudy. Fog early. High of 36F with a windchill as low as 19F. Breezy. Winds from the West at 15 to 20 mph.

  • Friday Night

    Partly cloudy. Low of 25F with a windchill as low as 19F. Winds from the WNW at 5 to 15 mph.

  • Saturday

    Partly cloudy. High of 34F with a windchill as low as 18F. Winds from the WNW at 5 to 10 mph.

  • Saturday Night

    Partly cloudy. Low of 21F. Winds from the NW at 5 to 10 mph.

  • Sunday

    Clear. High of 32F. Winds from the WNW at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 21F. Winds less than 5 mph.

  • Monday

    Clear. High of 30F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 21F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Local Storm Report 



12/18/2014 0928 am

Eureka, St Louis County.

Snow m1.0 inch, reported by trained spotter.


            Still snowing.





12/18/2014 0828 am

Chesterfield, St Louis County.

Snow m0.8 inch, reported by broadcast media.





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Crestwood, Crestwood, MO

Updated: 5:49 AM CST

Temperature: 32.4 °F Dew Point: 28 °F Humidity: 84% Wind: NE at 2.2 mph Pressure: 30.00 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: APRSWXNET Sappington MO US, Saint Louis, MO

Updated: 5:22 AM CST

Temperature: 33 °F Dew Point: 30 °F Humidity: 87% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: St. Louis, MO

Updated: 5:55 AM CST

Temperature: 32.8 °F Dew Point: 30 °F Humidity: 88% Wind: Calm Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Sunset Hills, St Louis, MO

Updated: 5:45 AM CST

Temperature: 33.4 °F Dew Point: 30 °F Humidity: 87% Wind: Calm Pressure: 30.28 in Hourly Precipitation: - Windchill: 33 °F Graphs

Location: East Madison, Kirkwood, MO, Kirkwood, MO

Updated: 5:55 AM CST

Temperature: 31.8 °F Dew Point: 28 °F Humidity: 87% Wind: Calm Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Crest Ave. Kirkwood MO, St. Louis, MO

Updated: 5:42 AM CST

Temperature: 33.4 °F Dew Point: 30 °F Humidity: 87% Wind: Calm Pressure: 30.23 in Hourly Precipitation: - Windchill: 33 °F Graphs

Location: Essex and Geyer, St. Louis, MO

Updated: 5:46 AM CST

Temperature: 32.4 °F Dew Point: 29 °F Humidity: 86% Wind: West at 1.1 mph Pressure: 30.08 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: Webster Groves, Webster Groves, MO

Updated: 5:55 AM CST

Temperature: 32.2 °F Dew Point: 27 °F Humidity: 82% Wind: NNE at 4.0 mph Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: South County, Affton, MO

Updated: 5:55 AM CST

Temperature: 32.6 °F Dew Point: 29 °F Humidity: 87% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Big Bend and I-270, Kirkwood, MO

Updated: 5:55 AM CST

Temperature: 32.1 °F Dew Point: 27 °F Humidity: 80% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: APRSWXNET Fenton MO US, Fenton, MO

Updated: 5:24 AM CST

Temperature: 34 °F Dew Point: 30 °F Humidity: 85% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: www.seedgeeks.com, Brentwood, MO

Updated: 5:48 AM CST

Temperature: 32.4 °F Dew Point: 28 °F Humidity: 85% Wind: WNW at 1.1 mph Pressure: 30.25 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 5:55 AM CST

Temperature: 32.4 °F Dew Point: 29 °F Humidity: 88% Wind: Calm Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 5:55 AM CST

Temperature: 32.7 °F Dew Point: 30 °F Humidity: 88% Wind: Calm Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Parkridge, Brentwood, MO

Updated: 5:54 AM CST

Temperature: 32.5 °F Dew Point: - Humidity: - Wind: NE at 2.2 mph Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 5:55 AM CST

Temperature: 31.6 °F Dew Point: 27 °F Humidity: 84% Wind: NNE at 3.8 mph Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Boulevard Heights, St. Louis, MO

Updated: 5:51 AM CST

Temperature: 37.2 °F Dew Point: 30 °F Humidity: 74% Wind: North at - Pressure: 30.36 in Hourly Precipitation: - Windchill: 37 °F Graphs

Location: Franz Park, St. Louis, MO

Updated: 5:55 AM CST

Temperature: 32.5 °F Dew Point: 29 °F Humidity: 87% Wind: North at - Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Manchester, MO, Manchester, MO

Updated: 5:46 AM CST

Temperature: 32.6 °F Dew Point: 30 °F Humidity: 88% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: BROADWAY (South), St. Louis, MO

Updated: 5:50 AM CST

Temperature: 32.5 °F Dew Point: - Humidity: 77% Wind: North at - Pressure: 29.65 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 5:55 AM CST

Temperature: 32.5 °F Dew Point: 30 °F Humidity: 91% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Twin Oaks, Twin Oaks, MO

Updated: 5:55 AM CST

Temperature: 32.5 °F Dew Point: 30 °F Humidity: 92% Wind: Calm Pressure: 30.18 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: ARNOLD, Arnold, MO

Updated: 5:50 AM CST

Temperature: 31.8 °F Dew Point: - Humidity: 81% Wind: North at - Pressure: 29.55 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: Ladue, St. Louis, MO

Updated: 5:50 AM CST

Temperature: 33.1 °F Dew Point: - Humidity: 77% Wind: North at - Pressure: 29.62 in Hourly Precipitation: - Windchill: 33 °F Graphs

Location: Arnold, Arnold, MO

Updated: 5:45 AM CST

Temperature: 32.2 °F Dew Point: 29 °F Humidity: 88% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: San Luis Trails, Fenton, MO

Updated: 5:55 AM CST

Temperature: 31.8 °F Dew Point: 29 °F Humidity: 90% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 5:55 AM CST

Temperature: 31.6 °F Dew Point: 29 °F Humidity: 90% Wind: ENE at 1.0 mph Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: APRSWXNET Ladue MO US, Saint Louis, MO

Updated: 5:26 AM CST

Temperature: 32 °F Dew Point: 28 °F Humidity: 86% Wind: NE at 1 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Arnold, MO

Updated: 5:41 AM CST

Temperature: 31.8 °F Dew Point: 31 °F Humidity: 97% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Forest Park, St. Louis, MO

Updated: 5:50 AM CST

Temperature: 31.5 °F Dew Point: - Humidity: 77% Wind: North at - Pressure: 29.67 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: RAWS MBOT MO US, Saint Louis, MO

Updated: 5:19 AM CST

Temperature: 33 °F Dew Point: 28 °F Humidity: 83% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 5:55 AM CST

Temperature: 32.7 °F Dew Point: 28 °F Humidity: 83% Wind: Calm Pressure: 30.39 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 5:55 AM CST

Temperature: 33.3 °F Dew Point: 28 °F Humidity: 81% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 5:55 AM CST

Temperature: 32.2 °F Dew Point: 28 °F Humidity: 84% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Christopher Winds, Oakville, MO

Updated: 5:55 AM CST

Temperature: 31.8 °F Dew Point: 30 °F Humidity: 91% Wind: East at 2.0 mph Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Glan Tai Estates, Ballwin, MO

Updated: 5:55 AM CST

Temperature: 33.1 °F Dew Point: 28 °F Humidity: 81% Wind: Calm Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: De Smet Jesuit High School, Creve Coeur, MO

Updated: 5:44 AM CST

Temperature: 31.4 °F Dew Point: 27 °F Humidity: 84% Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Guardian Court, Arnold, MO

Updated: 5:55 AM CST

Temperature: 34.7 °F Dew Point: 30 °F Humidity: 82% Wind: North at - Pressure: 30.23 in Hourly Precipitation: - Windchill: 35 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated aviation 
National Weather Service St Louis MO 
551 am CST Fri Dec 19 2014 


Short term: (through late this afternoon) 
issued at 300 am CST Fri Dec 19 2014 


A weak ridge of high pressure which extends from the Great Lakes 
region south through the mid-Mississippi Valley is in control of our 
weather today. Soundings are showing plenty of low level moisture 
trapped under an inversion at around 850mb. The vertical structure 
of the atmosphere is much like what we had last weekend with the 
moisture stratified in the low levels, so I don't expect much 
sunshine for the majority of the area...with the possible exception 
of south central and extreme southwest Illinois. Some drier air is 
trying to drift in on weak easterly low level flow. Vertical cross 
sections show intermittent weak upward motion through the day, 
primarily over central Missouri, and short term guidance spits out a 
hundredth of quantitative precipitation forecast here and there. Additionally, the hrrr shows some 
weak simulated radar echos over parts of central and southeast 
Missouri today, so have added in a little patchy drizzle to the 
forecast. 


Carney 


Long term: (tonight through thursday) 
issued at 300 am CST Fri Dec 19 2014 


(tonight - saturday) 


The brunt of a storm system is expected to pass relatively unnoticed 
to our south this evening, and if it weren't for some interaction 
with a more northerly component, would probably result in no 
precipitation anywhere, but such as it is, some very light snow 
looks to be possible early this evening for an area primarily south 
of stl Metro. This arrangement should be short-lived, with much of 
the mid and upper level moisture quickly being shunted off to the 
east, leaving behind extensive low cloud cover. At this point, 
there is good model consensus on a weak warm air advection, convergence regime 
setting up at the low levels that noses into central MO by midnight 
tonight and then snaking its way northward towards the uin area by 
Saturday morning. Have added in patchy drizzle as a result. For 
now, expecting influence of the surface ridge to trump this for stl 
Metro and areas S and east. Temps will probably not go very far 
tonight with clouds hanging tough, although where the surface ridge 
is dominant, should see a steady but slow drop...but for areas to 
the north and west of stl Metro where a light S flow will persist, near 
steady temps are expected. Speaking of temps, especially to the north 
and west of stl Metro where drizzle is expected to develop, readings 
will be within a degree or two of the freezing mark and so this will 
probably manifest more as patchy fzdz for areas in northeast MO and 
west-central Illinois. Prefer the lower MOS temps for Saturday maxes 
given cloud cover expected, but they should still rebound into the 
upper 30s and low 40s. 


(Sunday - wednesday) 


A rather deep upper level trough is expected to develop later on 
Sunday over the central Continental U.S. And then take a good part of the week 
before finally shifting east. Maintained the highest pops for 
Monday thru Tuesday, where there is good model consensus on when the 
trough will be close enough, yet its axis still just upstream...and 
then reduce to slight chances by Wednesday when the trough axis by 
this time will have shifted to the east. 


While much of the precipitation will be just rain, especially on the 
front-end, enough cold air starts working in on Tuesday, especially 
aloft, that will allow the atmosphere to sustain a changeover to 
snow. The only limiting factor at this point will be surface and/or 
boundary layer temps that will ultimately determine the rain vs. 
Snow question. GFS and ec MOS surface temps suggest this will not 
happen for most locales until late in the day on Tuesday with snow 
then expected as the dominant p-type from that point on. This will 
also be when the upper trough axis will be crossing thru, and so what 
is left will probably not be much, but perhaps light snow accums 
will be possible Tuesday night and early Wednesday. This will be 
our only realistic chance at a white Christmas, and something to 
watch, as a deeper system that digs a bit more south would up the 
potential. 


(Christmas) 


Models have been advertising for several days now a transitional 
period this day which should give US a net result of quiet wx with 
near seasonal temps. Nothing has changed with the current model 
runs so will let it stand. 


Tes 


&& 


Aviation: (for the 12z tafs through 12z Saturday morning) 
issued at 538 am CST Fri Dec 19 2014 


Expect persistent ceilings across the area today decreasing from 
VFR over Illinois to MVFR in eastern Missouri and down to IFR in 
central and parts of southeast Missouri. Patchy drizzle is also 
possible across the region today, particularly in central 
Missouri. Ceilings will likely drop slowly overnight tonight, with 
more patchy drizzle over parts of the area. 


Specifics for kstl: 


Ceilings will likely stay in MVFR range today. Short-range 
guidance is indicating that there will be a period of ceilings 
below 2000ft for this morning, and this seems reasonable given 
weak low level flow from the northeast and a few obs with ceilings 
around 1000ft upstream. Could see a little drizzle in the area 
today, but greater chances for drizzle should be over central 
Missouri. Expect that MVFR ceilings will continue through tonight. 


Carney 


&& 


Preliminary point temperatures/pops: 
Saint Louis 35 31 41 34 / 10 10 10 5 
Quincy 32 29 38 31 / 10 10 10 10 
Columbia 35 33 41 34 / 10 10 10 5 
Jefferson City 37 34 42 34 / 10 10 10 5 
Salem 35 29 41 31 / 10 10 5 0 
Farmington 36 30 43 31 / 10 10 10 0 


&& 


Lsx watches/warnings/advisories: 
MO...none. 
Illinois...none. 
&& 


$$ 


Weather forecast office lsx 












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