Saint Louis, Missouri Weather Conditions

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Current Conditions

  • 63°
  • Overcast
  • Wind: Calm
  • Humidity: 59%
  • Visibility: 10.0 miles
  • Dew Point: 48°
  • Pressure: 30.01 in. +

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Rain Showers
Rain Showers
Thunderstorm
T-storms
Thunderstorm
T-storms
Thunderstorm
T-storms
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T-storms
66°
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73°
72°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Thunderstorm
  • High: 73 °
  • Low: 52 °
  • T-Storms
  • Tuesday
  • Clear
  • High: 64 °
  • Low: 48 °
  • Clear
  • Wednesday
  • Partly Cloudy
  • High: 68 °
  • Low: 54 °
  • Partly Cloudy
  • Thursday
  • Chance of a Thunderstorm
  • High: 70 °
  • Low: 52 °
  • Chance of T-Storms
  • Friday
  • Partly Cloudy
  • High: 77 °
  • Low: 46 °
  • Partly Cloudy

Forecast for Saint Louis, Missouri

Updated: 4:00 AM CDT on April 21, 2014

  • Monday

    Overcast with thunderstorms and rain showers. High of 73F. Winds from the SW at 5 to 10 mph. Chance of rain 70%.

  • Monday Night

    Overcast with thunderstorms and rain showers. Low of 52F. Winds from the WNW at 5 to 10 mph.

  • Tuesday

    Clear. High of 64F. Winds from the NNW at 10 to 15 mph.

  • Tuesday Night

    Clear. Low of 48F. Winds from the NNE at 5 to 15 mph.

  • Wednesday

    Partly cloudy. High of 68F. Winds from the SE at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy. Low of 54F. Winds from the SSE at 10 to 15 mph.

  • Thursday

    Overcast with a chance of a thunderstorm and rain. High of 70F. Winds from the South at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Thursday Night

    Partly cloudy in the evening, then clear. Low of 52F. Winds from the WSW at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 77F. Breezy. Winds from the West at 10 to 20 mph.

  • Friday Night

    Clear. Low of 46F. Winds from the North at 5 to 15 mph.

  • Saturday

    Partly cloudy. High of 81F. Winds from the North at 10 to 15 mph.

  • Saturday Night

    Partly cloudy. Low of 43F. Winds from the NNE at 5 to 10 mph.

  • Sunday

    Overcast. High of 79F. Winds from the ENE at 5 to 10 mph.

  • Sunday Night

    Mostly cloudy. Low of 41F. Winds from the ENE at 5 to 10 mph.

  • Monday

    Overcast with a chance of rain. High of 68F. Winds from the NNE at 10 to 15 mph. Chance of rain 20%.

  • Monday Night

    Partly cloudy. Low of 41F. Winds from the East at 5 to 10 mph.

  • Tuesday

    Clear. High of 66F. Winds less than 5 mph.

  • Tuesday Night

    Partly cloudy. Low of 52F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 66F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 50F. Winds less than 5 mph.

  • Thursday

    Clear. High of 66F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 50F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Crestwood, Crestwood, MO

Updated: 7:03 AM CDT

Temperature: 57.7 °F Dew Point: 52 °F Humidity: 80% Wind: Calm Pressure: 29.73 in Hourly Precipitation: - Graphs

Location: Sunset Hills, St Louis, MO

Updated: 7:01 AM CDT

Temperature: 65.0 °F Dew Point: 50 °F Humidity: 58% Wind: Calm Pressure: 29.98 in Hourly Precipitation: - Graphs

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

Updated: 7:08 AM CDT

Temperature: 62.1 °F Dew Point: 49 °F Humidity: 63% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 7:00 AM CDT

Temperature: 61.0 °F Dew Point: 51 °F Humidity: 70% Wind: Calm Pressure: 29.99 in Hourly Precipitation: - Graphs

Location: Essex and Geyer, St. Louis, MO

Updated: 7:04 AM CDT

Temperature: 61.2 °F Dew Point: 51 °F Humidity: 68% Wind: Calm Pressure: 29.83 in Hourly Precipitation: - Graphs

Location: Webster Groves, Webster Groves, MO

Updated: 7:05 AM CDT

Temperature: 64.9 °F Dew Point: 42 °F Humidity: 44% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: South County, Affton, MO

Updated: 7:08 AM CDT

Temperature: 59.8 °F Dew Point: 52 °F Humidity: 76% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 7:05 AM CDT

Temperature: 65.0 °F Dew Point: 49 °F Humidity: 57% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

Location: Radiom Dr, Affton, MO

Updated: 7:08 AM CDT

Temperature: 59.4 °F Dew Point: 51 °F Humidity: 74% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Graphs

Location: Lindenwood Park, St Louis, MO

Updated: 7:08 AM CDT

Temperature: 60.3 °F Dew Point: 49 °F Humidity: 67% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 7:08 AM CDT

Temperature: 61.2 °F Dew Point: 49 °F Humidity: 65% Wind: South at 1.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 7:06 AM CDT

Temperature: 59.0 °F Dew Point: 50 °F Humidity: 73% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Graphs

Location: South Hampton, Saint Louis, MO

Updated: 7:08 AM CDT

Temperature: 62.9 °F Dew Point: 50 °F Humidity: 63% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Manchester, MO, Manchester, MO

Updated: 7:02 AM CDT

Temperature: 58.6 °F Dew Point: 51 °F Humidity: 77% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 7:08 AM CDT

Temperature: 63.6 °F Dew Point: 50 °F Humidity: 62% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

Location: Twin Oaks, Twin Oaks, MO

Updated: 7:02 AM CDT

Temperature: 63.3 °F Dew Point: 49 °F Humidity: 59% Wind: Calm Pressure: 29.88 in Hourly Precipitation: - Graphs

Location: Arnold, Arnold, MO

Updated: 7:01 AM CDT

Temperature: 61.1 °F Dew Point: 50 °F Humidity: 67% Wind: SSE at 1.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Graphs

Location: San Luis Trails, Fenton, MO

Updated: 7:08 AM CDT

Temperature: 65.5 °F Dew Point: 46 °F Humidity: 50% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 7:08 AM CDT

Temperature: 63.1 °F Dew Point: 50 °F Humidity: 62% Wind: South at 4.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: Arnold, MO

Updated: 6:56 AM CDT

Temperature: 61.1 °F Dew Point: 52 °F Humidity: 71% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 7:08 AM CDT

Temperature: 62.4 °F Dew Point: 45 °F Humidity: 53% Wind: SSE at 2.0 mph Pressure: 30.09 in Hourly Precipitation: 0.00 in Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 7:08 AM CDT

Temperature: 61.7 °F Dew Point: 50 °F Humidity: 65% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 7:08 AM CDT

Temperature: 62.6 °F Dew Point: 45 °F Humidity: 52% Wind: SSE at 5.4 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 7:07 AM CDT

Temperature: 62.5 °F Dew Point: 49 °F Humidity: 61% Wind: SSE at 2.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

Location: Shaw/Tower Grove, St. Louis, MO

Updated: 3:58 AM CDT

Temperature: 64.8 °F Dew Point: 44 °F Humidity: 46% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Arbor Valley, Ballwin, MO

Updated: 6:59 AM CDT

Temperature: 59.2 °F Dew Point: 50 °F Humidity: 72% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 7:08 AM CDT

Temperature: 62.5 °F Dew Point: 47 °F Humidity: 57% Wind: SE at 1.6 mph Pressure: 29.34 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest HLCRST MO US UPR, Saint Louis, MO

Updated: 6:00 AM CDT

Temperature: 65 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 7:08 AM CDT

Temperature: 64.1 °F Dew Point: 47 °F Humidity: 53% Wind: SSE at 1.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in 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 
652 am CDT Mon Apr 21 2014 


Short term: (today through thursday) 
issued at 400 am CDT Mon Apr 21 2014 


Two shortwave trofs are coming into phase over the Great Plains 
this morning. A relatively weak low level jet is pointed at the 
mid-Mississippi Valley as a result with only around 15kts at 
850mb. Even though the jet is rather weak in the grand scheme of 
things, there appears to be enough isentropic lift and moisture 
convergence associated with the first vortmax ejecting northeast 
from the trof across southwest Missouri to produce a rather large 
area of light to moderate rain. Short-range guidance including the 
rap, hrrr, and 4km NCEP WRF push this area of showers up into our 
County warning forecast area by 12z. Multiple runs of these models have shown this trend, 
and the precip across southwest Missouri has been increasing in 
coverage and intensity (a bit) over the past hour or so. See no 
reason to disbelieve the guidance at this time, so have bumped up 
pops this morning...primarily over central and parts of southeast 
Missouri. 


The northern shortwave is dragging a cold front southeast through 
Nebraska at this time and the front will enter the northwestern 
portions of our County warning forecast area between 21-00z this evening. Expect 
clouds/precip this morning to keep temperatures from warming up as 
much as yesterday. However, most of if not the entire County warning forecast area should 
stay in the warm sector today, so have leaned toward warmer mav 
guidance. It won't take much insolation to push temperatures into 
the mid and possibly upper 70s especially since it looks like we'll 
be starting the day in the upper 50s to low 60s across most of the 
area. Still expecting scattered to numerous showers and 
thunderstorms to develop this afternoon ahead of the cold front. 
While there should be more than enough instability for storms to 
occur, deep layer shear should be relatively weak (around 15-20kts), 
and cape values will be generally 1200 j/kg or less so severe storms 
are not expected. 


Convection should diminish within a few hours after sunset, and the 
cold front will continue moving southeast...clearing the southeast 
border of our County warning forecast area by 06z. Cooler and drier air will overspread the 
area behind the front. Expect temperatures on Tuesday and Wednesday 
to be near normal with highs in the mid 60s to low 70s and lows 
generally in 40s to low 50s. Meanwhile, a piece of the high 
amplitude trof spinning over the eastern Pacific will come onshore 
Tuesday and move across The Rockies Wednesday into the Great Plains 
Wednesday night. This will result in good moisture return ahead of 
the surface front Wednesday night into Thursday. All guidance is 
printing out precip ahead of the front on Thursday. Deep layer 
shear should be in excess of 40kts with the strong trof aloft and 
the cold front sweeping through during the day Thursday. Unsure yet 
what the severe potential will be as instability may be limited. 




Carney 


Long term: (thursday night through sunday) 
issued at 400 am CDT Mon Apr 21 2014 


Medium range guidance continues to have difficulty coming to a 
consensus for this period. Pattern becomes highly amplified Friday 
and Saturday as the bulk of that gihemous Pacific trof comes 
ashore. The main difference between the European model (ecmwf) and GFS headed into 
the weekend is the strength of the amplification of the flow over 
the eastern 1/2 of the Continental U.S.. both models have a decent upper level 
low over southern Ontario by 00z Saturday, but the ec opens it up as 
the wave heads east into Sunday morning while the GFS keeps a 
stronger closed low. The GFS allows for a much stronger surface 
ridge and colder air to flow south out of Canada into the mid and 
lower Mississippi Valley Saturday and Sunday while the ec keeps the 
cold air bottled up over the upper Midwest. The Gem seems to 
potentially favor the ec solution in the last periods of its 
forecast, but with little else to support either solution, have 
stuck with the National Weather Service central region ensemble blend for the forecast, 
which calls for below normal temperatures and a chance of precip 
Saturday night into Sunday. 


Carney 


&& 


Aviation: (for the 12z tafs through 12z Tuesday morning) 
issued at 629 am CDT Mon Apr 21 2014 


A bit of a tricky forecast this period due to showers and 
thunderstorms expected to impact area terminals today through this 
evening. Currently, an area of -ra/-shra over southwest/southern 
Missouri is moving northeast, with at least vcsh expected at kcou 
and Metro taf sites not long after the forecast period begins this 
morning. While it currently appears that Metro taf sites could see 
more intermittent precipitation through the morning hours, kcou is 
more likely to see persistent -shra as the precipitation shield 
over southwest Missouri continues its slow trek toward the 
northeast. Observations have indicated some locations experiencing 
MVFR visibility in the rain, with ceilings remaining largely VFR 
(aoa 5000-6000ft). KUIN looks to remain dry and VFR through the 
morning, through about 15z when -ra/rain showers move in from the west and 
southwest. 


This afternoon, the details become a bit murky, as instability 
will be sufficient for thunderstorms to occur ahead of a cold 
front which is expected to move through the area during the late 
afternoon and evening hours. It is looking very much like a 
situation in which it will be hard to pin down exactly when/where 
thunderstorms will develop this afternoon until they actually 
initiate. Therefore, have continued thunderstorms in the vicinity mention for area taf 
sites through the afternoon and evening until the details are more 
apparent. The aforementioned cold front, currently extending from 
north central Iowa southwestward into north central Kansas is 
expected to move through KUIN by 00z, kcou by 02z, and Metro taf 
sites by 04z. After fropa, south winds will veer to the west and 
eventually northwest by the end of the period with clearing skies. 


Specifics for kstl: 


An area of -ra/-shra is moving toward the terminal this morning 
from the southwest, with vcsh expected not long after the start of 
the forecast period. Precipitation through the morning should be 
largely intermittent, though expect peak -shra activity between 
about 13-15z as the precipitation shield moves through the 
terminal. While upstream observations do not indicate any 
visibility reductions below MVFR, some further reductions may be 
possible, especially if any stronger storms move over the 
terminal. This afternoon, instability ahead of a slow moving cold 
front will be sufficient for thunderstorms to develop across the 
area, however the exact location and timing of these storms 
remains in question, and thus have maintained the thunderstorms in the vicinity mention for 
kstl through the afternoon and evening, with the late afternoon 
and early evening looking like the most likely time frame. The 
cold front is expected to move through the terminal by 04z 
tonight, with winds veering to the west and northwest in its wake 
and clearing skies by 06z. 


Jp 


&& 


Preliminary point temperatures/pops: 
Saint Louis 76 53 70 47 / 60 50 0 0 
Quincy 74 47 67 42 / 60 20 0 0 
Columbia 73 48 69 45 / 60 30 0 0 
Jefferson City 74 50 70 44 / 70 40 0 0 
Salem 74 53 66 42 / 60 60 5 0 
Farmington 73 52 69 41 / 60 60 5 0 


&& 


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


$$ 


Weather forecast office lsx 












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