Saint Louis, Missouri Weather Conditions

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Current Conditions

  • 73°
  • Haze
  • Wind: ESE 8 mph
  • Humidity: 64%
  • Visibility: 6.0 miles
  • Dew Point: 60°
  • Pressure: 29.99 in. +

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Next 12 Hours

11  am
2  pm
5  pm
8  pm
11  pm
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Overcast
Overcast
Overcast
Overcast
Chance of Rain
Chance of Rain
70°
78°
79°
73°
69°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Overcast
  • High: 81 °
  • Low: 62 °
  • Overcast
  • Sunday
  • Chance of a Thunderstorm
  • High: 75 °
  • Low: 53 °
  • Chance of T-Storms
  • Monday
  • Partly Cloudy
  • High: 64 °
  • Low: 45 °
  • Partly Cloudy
  • Tuesday
  • Clear
  • High: 66 °
  • Low: 48 °
  • Clear
  • Wednesday
  • Partly Cloudy
  • High: 70 °
  • Low: 45 °
  • Partly Cloudy

Forecast for Saint Louis, Missouri

Updated: 10:15 AM CDT on January 18, 2015

  • Saturday

    Cloudy skies. A stray shower or thunderstorm is possible. High 81F. Winds SE at 10 to 15 mph.

  • Saturday Night

    Considerable cloudiness. Occasional rain showers after midnight. Thunder possible. Low 62F. Winds E at 10 to 15 mph. Chance of rain 60%.

  • Sunday

    Variable clouds with scattered thunderstorms. A few storms may be severe. High near 75F. Winds NW at 5 to 10 mph. Chance of rain 60%.

  • Sunday Night

    Thunderstorms during the evening will give way to steady rain overnight. Low 53F. Winds WSW at 10 to 20 mph. Chance of rain 90%.

  • Monday

    Wind increasing. A few clouds from time to time. High 64F. Winds WNW at 20 to 30 mph.

  • Monday Night

    Some clouds early will give way to generally clear conditions overnight. Low around 45F. Winds W at 10 to 20 mph.

  • Tuesday

    Mostly sunny skies. High 66F. Winds WNW at 10 to 20 mph.

  • Tuesday Night

    Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 48F. Winds WSW at 10 to 15 mph. Chance of rain 50%.

  • Wednesday

    Partly cloudy skies. High near 70F. Winds W at 10 to 15 mph.

  • Wednesday Night

    Mostly clear skies. Low around 45F. Winds NNW at 5 to 10 mph.

  • Thursday

    Some clouds in the morning will give way to mainly sunny skies for the afternoon. High around 65F. Winds NNW at 5 to 10 mph.

  • Thursday Night

    Clear. Low 46F. Winds N at 5 to 10 mph.

  • Friday

    Sunshine and clouds mixed. High 66F. Winds E at 5 to 10 mph.

  • Friday Night

    Partly cloudy skies early followed by increasing clouds with showers developing later at night. Low 51F. Winds ENE at 10 to 15 mph. Chance of rain 40%.

  • Saturday

    Cloudy early with partial sunshine expected late. High 61F. Winds NE at 10 to 15 mph.

  • Saturday Night

    A few clouds from time to time. Low 46F. Winds NE at 10 to 15 mph.

  • Sunday

    A mainly sunny sky. High around 65F. Winds NE at 10 to 15 mph.

  • Sunday Night

    Clear. Low 46F. Winds NE at 5 to 10 mph.

  • Monday

    Sunny skies. High around 65F. Winds NNE at 10 to 15 mph.

  • Monday Night

    Mainly clear skies. Low 48F. Winds NE at 10 to 15 mph.

  • Tuesday

    Abundant sunshine. High 66F. Winds N at 10 to 15 mph.

  • Tuesday Night

    Clear skies. Low 48F. Winds NNE at 10 to 15 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Branch Street, St. Louis, MO

Updated: 11:30 AM CDT

Temperature: 72.1 °F Dew Point: - Humidity: 69% Wind: North at - Pressure: 29.55 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: BLAIR STREET, St. Louis, MO

Updated: 11:30 AM CDT

Temperature: 72.5 °F Dew Point: - Humidity: 73% Wind: North at - Pressure: 29.48 in Hourly Precipitation: - Heat Index: 74 °F Graphs

Location: Soulard, St. Louis, MO

Updated: 11:35 AM CDT

Temperature: 76.8 °F Dew Point: 65 °F Humidity: 66% Wind: North at - Pressure: 30.07 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Soulard, Saint Louis, MO

Updated: 11:28 AM CDT

Temperature: 72.0 °F Dew Point: 63 °F Humidity: 74% Wind: Calm Pressure: 29.65 in Hourly Precipitation: - Heat Index: 74 °F Graphs

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

Updated: 11:29 AM CDT

Temperature: 73.2 °F Dew Point: 63 °F Humidity: 70% Wind: SE at 1.7 mph Pressure: 29.83 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: RAWS, Saint Louis, MO

Updated: 10:19 AM CDT

Temperature: 72 °F Dew Point: 61 °F Humidity: 69% Wind: ESE at 3 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: ACW Alliance at BJC Washington University Campus, Saint Louis, MO

Updated: 11:36 AM CDT

Temperature: 72.5 °F Dew Point: 61 °F Humidity: 67% Wind: ESE at 1.6 mph Pressure: 29.33 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Forest Park, St. Louis, MO

Updated: 11:30 AM CDT

Temperature: 71.4 °F Dew Point: - Humidity: 63% Wind: North at - Pressure: 29.40 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Holly Hills, Saint Louis, MO

Updated: 11:36 AM CDT

Temperature: 71.8 °F Dew Point: 62 °F Humidity: 70% Wind: Calm Pressure: 29.23 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: EAST GRANITE, Granite City, IL

Updated: 11:27 AM CDT

Temperature: 72.9 °F Dew Point: 63 °F Humidity: 71% Wind: SSE at 3.2 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Franz Park, St. Louis, MO

Updated: 11:35 AM CDT

Temperature: 72.5 °F Dew Point: 64 °F Humidity: 75% Wind: North at - Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Carondelet Park, Saint Louis, MO

Updated: 11:36 AM CDT

Temperature: 72.0 °F Dew Point: 62 °F Humidity: 72% Wind: Calm Pressure: 29.49 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: MesoWest, Fairmont City, IL

Updated: 10:55 AM CDT

Temperature: 75 °F Dew Point: 62 °F Humidity: 64% Wind: SSE at 3 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: 27th Street, Granite City, IL

Updated: 11:36 AM CDT

Temperature: 72.9 °F Dew Point: 64 °F Humidity: 72% Wind: North at - Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Boulevard Heights, St. Louis, MO

Updated: 11:35 AM CDT

Temperature: 75.2 °F Dew Point: 65 °F Humidity: 71% Wind: North at - Pressure: 30.08 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Lindenwood Park, Saint Louis, MO

Updated: 11:35 AM CDT

Temperature: 70.0 °F Dew Point: 64 °F Humidity: 80% Wind: North at - Pressure: 29.96 in Hourly Precipitation: - Heat Index: - Graphs

Location: MesoWest, Granite City, IL

Updated: 9:20 AM CDT

Temperature: 72 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Morehouse Lane, University City, MO

Updated: 11:35 AM CDT

Temperature: 67.3 °F Dew Point: 61 °F Humidity: 79% Wind: North at - Pressure: 30.09 in Hourly Precipitation: - Heat Index: - Graphs

Location: www.seedgeeks.com, Brentwood, MO

Updated: 11:29 AM CDT

Temperature: 73.2 °F Dew Point: 63 °F Humidity: 71% Wind: WSW at 1.1 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Ladue, St. Louis, MO

Updated: 11:30 AM CDT

Temperature: 72.3 °F Dew Point: - Humidity: 65% Wind: North at - Pressure: 29.35 in Hourly Precipitation: - Heat Index: 76 °F Graphs

Location: Parkridge, Brentwood, MO

Updated: 11:36 AM CDT

Temperature: 71.2 °F Dew Point: - Humidity: - Wind: NE at 1.6 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: South County, Affton, MO

Updated: 11:36 AM CDT

Temperature: 70.6 °F Dew Point: 64 °F Humidity: 81% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Webster Groves, Webster Groves, MO

Updated: 11:35 AM CDT

Temperature: 71.0 °F Dew Point: 44 °F Humidity: 38% Wind: NE at 5.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Raritan Drive, Webster Groves, MO

Updated: 11:36 AM CDT

Temperature: 71.1 °F Dew Point: 64 °F Humidity: 77% Wind: North at - Pressure: 30.07 in Hourly Precipitation: - Heat Index: 72 °F Graphs

Location: New Goose, Fairview Heights, IL

Updated: 11:37 AM CDT

Temperature: 73.4 °F Dew Point: 64 °F Humidity: 73% Wind: SE at 1.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: BUCKLEY MEADOWS 4, Saint Louis, MO

Updated: 11:25 AM CDT

Temperature: 71.8 °F Dew Point: 63 °F Humidity: 75% Wind: ESE at 2.2 mph Pressure: 29.77 in Hourly Precipitation: - Heat Index: 73 °F Graphs

Location: City of Olivette - Public Works, Olivette, MO

Updated: 11:37 AM CDT

Temperature: 71.8 °F Dew Point: 62 °F Humidity: 71% Wind: East at 2.0 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: West End, Belleville, IL

Updated: 11:37 AM CDT

Temperature: 72.7 °F Dew Point: 44 °F Humidity: 54% Wind: SSE at 3.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Millstadt, Millstadt, IL

Updated: 11:36 AM CDT

Temperature: 74.3 °F Dew Point: 57 °F Humidity: 55% Wind: Calm Pressure: 30.70 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Crestwood, Crestwood, MO

Updated: 11:28 AM CDT

Temperature: 72.0 °F Dew Point: 64 °F Humidity: 75% Wind: SSE at 4.2 mph Pressure: 29.71 in Hourly Precipitation: - Heat Index: 74 °F Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 11:37 AM CDT

Temperature: 66.2 °F Dew Point: 64 °F Humidity: 91% Wind: ENE at 4.4 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Tim and Carolyns yard, COLLINSVILLE, IL

Updated: 11:37 AM CDT

Temperature: 75.2 °F Dew Point: 64 °F Humidity: 68% Wind: SE at 2.5 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Heat Index: 77 °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 
723 am CDT Sat Apr 18 2015 


Short term: (through late this afternoon) 
issued at 406 am CDT Sat Apr 18 2015 


The upper level low over Colorado will move slowly eastward today. As 
southwest flow shortwaves move into our area, along with increasing 
upper level divergence ahead of the the upper level low/trough, 
scattered showers and storms moving north northeastward through 
western MO should eventually translate eastward into the western 
portion of our forecast area, west of the Mississippi River this 
afternoon. Followed the convective forecast of the 4 km NCEP WRF 
for today which appears to have a pretty good handle on the current 
convection. Above normal temperatures can be expected again today, 
slightly cooler across the western portion of the forecast area due 
to increased cloud cover along with the potential for at least 
scattered showers/storms this afternoon. 


Gks 


Long term: (tonight through friday) 
issued at 450 am CDT Sat Apr 18 2015 


A much better potential for more widespread convection will occur 
tonight and Sunday as the upper level low moves eastward through Kansas 
tonight and Sunday morning, and through MO Sunday afternoon with 
shortwaves continuing to be ejected out ahead of it. The NAM and 
GFS models develop a surface low which will move northeastward 
through southeast MO and western Kentucky late tonight and into southeast 
Illinois and southwest in by 18z Sunday. The NAM model is stronger with 
this surface low versus the GFS, while the European model (ecmwf) is even weaker than 
the GFS. Will continue to follow the NCEP 4 km WRF model which 
develops a large area of convection associated with this surface low 
which spreads northward into much of the forecast area late 
tonight. Will put the highest pops tonight across southeast MO and 
southwest Illinois. Convection will continue Sunday into Sunday evening 
as the upper level low/trough opens up and moves through our area 
with a cold front moving southeastward through the forecast region 
Sunday night. There is still a risk for severe storms on Sunday, 
but it appears that this risk will be further south, mainly across 
southeast MO where more instability is forecast. Cooler 
temperatures can be expected on Sunday due to the cloud cover and 
precipitation, then cooler Sunday night and Monday due to low level 
cold air advection behind the 850 mb trough/surface cold front. A 
cooler period is expected for the next work week as an upper level 
trough/low moves into the Great Lakes region and we get into 
persistent northwest flow. The European model (ecmwf) model is a little colder than 
the GFS, particularly for Wednesday through Friday as it brings a 
cold front southward through our area on Wednesday with the zero 
degree c 850 mb isotherm dropping southward to stl by Thursday 
morning. With model differences, especially later in the extended 
forecast period, will forecast temperatures at least slightly below 
normal for the work week. 


Gks 


&& 


Aviation: (for the 12z tafs through 12z Sunday morning) 
issued at 633 am CDT Sat Apr 18 2015 


A tricky fcst with closed stacked low spinning over Colorado. This 
feature is not fcst to move very far during the taf valid 
prd...only mvng to SW Kansas by 12z sun. Lobes of energy rotating 
around the upper level disturbance will modulate the convective 
threat. A band of rain showers/tstms has dvlpd this mrng across ern 
OK/KS...though addtnl isld activity has dvlpd ahead of this area 
with all precip mvng almost due north as it rotates around the 
parent system across Colorado. Due to the slow mvmnt of this feature and 
the fact that the individual convective elements are mvng north, 
precip will be slow to progress across MO today/tonight. Kcou is 
the lowest confidence site as it wil be closest to the activity 
across wrn MO thru the day. It is also possible that addtnl rain showers/tstms 
may dvlp in an unstable air mass across ern MO this aftn/evng but 
not confident enough in coverage to include mention attm. Expect a 
VFR fcst except in precip. Once precip moves into a terminal, it 
should last several hours before ending. 


Specifics for kstl: 


VFR fcst today with widespread convection mvng north across ern 
Kansas/OK spreading into wrn MO. The may be some addtnl convection 
that dvlps today east of this band of precip but not confident in 
coverage to include attm. Due to the slow mvmnt of the system, the 
precip will be slow to advance east. There could be a several hour 
window this evng/tonight where precip will be near but not yet affecting 
the terminal. Once precip moves in, it should last several hours. 


2% 


&& 


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


$$ 


Weather forecast office lsx 












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