Saint Charles, Missouri Weather Conditions

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Current Conditions

  • 48°
  • Clear
  • Wind: East 14 mph
  • Humidity: 63%
  • Visibility: 10.0 miles
  • Dew Point: 36°
  • Pressure: 30.13 in. +

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Next 12 Hours

10  am
1  pm
4  pm
7  pm
10  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
55°
63°
70°
66°
55°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Partly Cloudy
  • High: 70 °
  • Low: 50 °
  • Partly Cloudy
  • Thursday
  • Thunderstorm
  • High: 70 °
  • Low: 46 °
  • T-Storms
  • Friday
  • Clear
  • High: 81 °
  • Low: 52 °
  • Clear
  • Saturday
  • Partly Cloudy
  • High: 70 °
  • Low: 52 °
  • Partly Cloudy
  • Sunday
  • Chance of a Thunderstorm
  • High: 73 °
  • Low: 52 °
  • Chance of T-Storms

Forecast for Saint Charles, Missouri

Updated: 4:00 AM CDT on April 23, 2014

  • Wednesday

    Partly cloudy. High of 70F. Winds from the South at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy. Low of 50F. Winds from the SE at 10 to 15 mph.

  • Thursday

    Overcast with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 70F. Breezy. Winds from the South at 15 to 20 mph. Chance of rain 80% with rainfall amounts near 0.4 in. possible.

  • Thursday Night

    Mostly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then overcast. Low of 46F. Winds from the WSW at 10 to 15 mph. Chance of rain 30% with rainfall amounts near 0.3 in. possible.

  • Friday

    Clear. High of 81F. Winds from the SW at 10 to 15 mph.

  • Friday Night

    Clear. Low of 52F. Winds from the SW at 5 to 15 mph shifting to the WNW after midnight.

  • Saturday

    Partly cloudy. High of 70F. Winds from the ENE at 10 to 15 mph.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm and rain after midnight. Low of 52F. Winds from the East at 10 to 15 mph. Chance of rain 40% with rainfall amounts near 0.2 in. possible.

  • Sunday

    Overcast with a chance of a thunderstorm and rain in the morning, then partly cloudy with a chance of a thunderstorm and rain. High of 73F. Breezy. Winds from the ESE at 15 to 20 mph. Chance of rain 50%.

  • Sunday Night

    Partly cloudy with a chance of a thunderstorm. Low of 52F. Breezy. Winds from the ESE at 15 to 20 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 79F. Breezy. Winds from the SSE at 15 to 20 mph. Chance of rain 50%.

  • Monday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 50F. Winds from the SSE at 5 to 15 mph. Chance of rain 50%.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm. Fog early. High of 75F. Winds from the SE at 5 to 10 mph shifting to the NW in the afternoon. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Tuesday Night

    Overcast with a chance of rain. Low of 43F. Breezy. Winds from the NW at 10 to 20 mph. Chance of rain 70% with rainfall amounts near 0.8 in. possible.

  • Wednesday

    Overcast with a chance of rain. High of 70F. Breezy. Winds from the North at 15 to 20 mph. Chance of rain 50%.

  • Wednesday Night

    Mostly cloudy. Low of 45F. Winds from the NNW at 5 to 20 mph.

  • Thursday

    Mostly cloudy. High of 70F. Winds from the NW at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Fog overnight. Low of 46F. Winds from the NW at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 70F. Winds from the NW at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 50F. Winds less than 5 mph.

  • Saturday

    Clear. High of 68F. Winds less than 5 mph.

  • Saturday Night

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

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Stable Ridge Estates, Saint Charles, MO

Updated: 8:43 AM CDT

Temperature: 57.7 °F Dew Point: 44 °F Humidity: 60% Wind: ESE at 1.6 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Fox Hill, Saint Charles, MO

Updated: 8:44 AM CDT

Temperature: 52.2 °F Dew Point: 26 °F Humidity: 36% Wind: East at 8.7 mph Pressure: 29.50 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Lindenwood, St. Charles, MO

Updated: 8:44 AM CDT

Temperature: 50.7 °F Dew Point: 38 °F Humidity: 62% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 8:44 AM CDT

Temperature: 51.8 °F Dew Point: 37 °F Humidity: 56% Wind: ENE at 3.5 mph Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 8:40 AM CDT

Temperature: 52.1 °F Dew Point: 39 °F Humidity: 61% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 8:44 AM CDT

Temperature: 51.2 °F Dew Point: 37 °F Humidity: 58% Wind: ESE at 4.0 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Riverwood Place, Florissant, MO

Updated: 8:44 AM CDT

Temperature: 51.3 °F Dew Point: 39 °F Humidity: 62% Wind: SE at 3.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: West Drive, St. Peters, MO

Updated: 8:44 AM CDT

Temperature: 50.5 °F Dew Point: 38 °F Humidity: 61% Wind: ENE at 4.0 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Tanglewood, Saint Peters, MO

Updated: 8:44 AM CDT

Temperature: 50.4 °F Dew Point: 39 °F Humidity: 66% Wind: East at 2.7 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Saint Peters, MO

Updated: 8:44 AM CDT

Temperature: 51.4 °F Dew Point: 39 °F Humidity: 63% Wind: SSW at 3.0 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Danielle Downs, St. Peters, MO

Updated: 8:44 AM CDT

Temperature: 56.1 °F Dew Point: 42 °F Humidity: 59% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: St. Peters, St. Peters, MO

Updated: 8:40 AM CDT

Temperature: 51.5 °F Dew Point: 38 °F Humidity: 61% Wind: SSE at 5.0 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Maryland Heights, MO

Updated: 8:42 AM CDT

Temperature: 52.0 °F Dew Point: 39 °F Humidity: 61% Wind: SE at 3.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Jost Farm, Florissant, MO

Updated: 8:40 AM CDT

Temperature: 52.5 °F Dew Point: 40 °F Humidity: 63% Wind: East at 7.6 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: St. Ann, MO, St. Ann, MO

Updated: 8:38 AM CDT

Temperature: 51.6 °F Dew Point: 37 °F Humidity: 57% Wind: NE at 4.2 mph Pressure: 30.06 in Hourly Precipitation: - Windchill: - Graphs

Location: 1 Mile South of St. Louis Lambert Airport, Woodson Terrace, MO

Updated: 8:44 AM CDT

Temperature: 49.0 °F Dew Point: 39 °F Humidity: 69% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 8:44 AM CDT

Temperature: 53.8 °F Dew Point: 37 °F Humidity: 52% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 8:44 AM CDT

Temperature: 54.3 °F Dew Point: 40 °F Humidity: 58% Wind: East at 4.3 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 8:29 AM CDT

Temperature: 50.7 °F Dew Point: 40 °F Humidity: 66% Wind: ESE at 1.1 mph Pressure: 30.03 in Hourly Precipitation: - Windchill: - Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 8:44 AM CDT

Temperature: 52.5 °F Dew Point: 40 °F Humidity: 62% Wind: East at 5.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: O'fallon / St. Peters, St. Peters, MO

Updated: 8:44 AM CDT

Temperature: 51.6 °F Dew Point: 41 °F Humidity: 68% Wind: East at 2.3 mph Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 8:44 AM CDT

Temperature: 50.9 °F Dew Point: 38 °F Humidity: 61% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 8:44 AM CDT

Temperature: 56.3 °F Dew Point: 38 °F Humidity: 51% Wind: Calm Pressure: 29.45 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 8:40 AM CDT

Temperature: 50.5 °F Dew Point: 38 °F Humidity: 62% Wind: NE at 6.0 mph Pressure: 30.14 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 8:43 AM CDT

Temperature: 50.4 °F Dew Point: 39 °F Humidity: 65% Wind: NE at 3.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Downtown O'Fallon, O'Fallon, MO

Updated: 8:44 AM CDT

Temperature: 51.0 °F Dew Point: 38 °F Humidity: 60% Wind: NE at 5.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 8:40 AM CDT

Temperature: 56.4 °F Dew Point: 33 °F Humidity: 41% Wind: SE at 7.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 8:41 AM CDT

Temperature: 49.7 °F Dew Point: 37 °F Humidity: 62% Wind: ESE at 8.0 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 8:44 AM CDT

Temperature: 57.7 °F Dew Point: 40 °F Humidity: 52% Wind: ENE at 2.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Timber Ridge, Godfrey, IL

Updated: 8:40 AM CDT

Temperature: 49.3 °F Dew Point: 37 °F Humidity: 62% Wind: ESE at 4.0 mph Pressure: 30.14 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Royal Oaks, O'Fallon, MO

Updated: 8:44 AM CDT

Temperature: 50.4 °F Dew Point: 40 °F Humidity: 66% Wind: East at 2.0 mph Pressure: 30.14 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Brecht Ln, Godfrey, IL

Updated: 8:43 AM CDT

Temperature: 53.1 °F Dew Point: 36 °F Humidity: 53% Wind: East at 6.3 mph Pressure: 30.02 in Hourly Precipitation: - Windchill: - Graphs

Location: St. Paul (SJC), OFallon, MO

Updated: 8:44 AM CDT

Temperature: 50.3 °F Dew Point: 40 °F Humidity: 67% Wind: East at 2.0 mph Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 8:40 AM CDT

Temperature: 50.8 °F Dew Point: 38 °F Humidity: 61% Wind: SSW at 5.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: - 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 
643 am CDT Wed Apr 23 2014 


Short term: (today through friday) 
issued at 342 am CDT Wed Apr 23 2014 


Surface ridge extending from Wisconsin south/southwest into the 
mid-Mississippi Valley and back into East Texas will move east today 
ahead of developing low pressure over the Great Plains. Increasing 
southerly low level flow will result. All short-range model 
guidance develops an area of warm advection showers over the eastern 
plains and pushes it east northeast into northwest Missouri and Iowa 
today. Looks possible that the southeast edge of the showers could 
clip our area, but low level air is pretty dry according to the NAM, 
GFS, and RUC and the primary thrust of moisture return will be back 
over western Missouri so have only introduced slight chance pops 
over our northwest counties. We should see highs pretty close to 
what occurred yesterday even with the warm advection since we'll be 
starting out the day cooler than Tuesday morning. The exception 
will be central Missouri where morning lows should be a bit warmer 
than areas further east. 


The shortwave currently digging across The Rockies will move out 
into the Great Plains tonight and the resulting cold front will move 
into northwest Missouri around 12z. Still looks like showers and 
thunderstorms will be ongoing along and ahead of the front as it 
moves through the County warning forecast area on Thursday. Diurnal heating will likely be 
limited due to cloud cover and advancing precip from the west, so 
instability still looks relatively weak. While there should be 
enough cape for thunderstorms, widespread severe weather does not 
look likely at this time. Stuck closer to the warmer mav guidance 
for highs since morning lows will be around 50 across the area and 
15-20 degrees of rise should be attainable in warm advection this 
time of year regardless of cloud cover. 


Guidance is in good agreement with pushing the front through the 
entire area shortly after 00z. Still have some lingering precip 
east of the Mississippi River Thursday evening as the front exits, 
but dry after midnight. Pacific high builds across the region 
Friday morning. As opposed to a colder Canadian airmass, the 
Pacific Ridge should produce temperatures near or slightly above 
normal in the upper 40s to low 50s Friday morning. West-southwest 
flow develops Friday morning as the high scoots quickly into the 
Tennessee Valley so expect temperatures to rebound into the mid and 
upper 70s. 


Carney 


Long term: (saturday through tuesday) 
issued at 342 am CDT Wed Apr 23 2014 


While the medium range guidance is coming into better agreement on 
the overall synoptic pattern, the smaller scale is still unclear. 
Generally, a secondary cold front will dip south across the upper 
Midwest driven south by the last vestiges of thursday's shortwave. 
The front will stall somewhere across the Midwest on Saturday, 
though models can't make up their minds where. GFS stalls the front 
across south/southwest Missouri Saturday morning, while the European model (ecmwf) 
stalls it out over northern Iowa. The Gem is right about in the 
middle stalling the front over northern Missouri. All three models 
have some low level baroclinicity over our area, whether it is the 
primary baroclinic zone associated with the front (gfs/gem) or a 
secondary baroclinic zone left over from the Pacific airmass which 
will be exiting to the east (ec). Warm advection begins Saturday 
morning with a 30+ kt low level jet pointed at this baroclinic zone 
and all three models print out some light precip. Have therefore 
kept chance pops going in central Missouri, and would not be 
surprised if subsequent shifts need to bump up pops a bit more 
across the area if model trends become more consistent. 


The front remains stalled somewhere between Springfield Missouri and 
Davenport Iowa depending on which model you believe through Monday 
as the longwave trof over the Pacific moves inland, and becomes 
negatively tilted over The Rockies and Great Plains. A strong 
surface low develops as a result and it moves into the Mississippi 
Valley Monday night into Tuesday. The upper trof cuts off and 
becomes stagnant while the surface low tracks across Missouri into 
the Ohio Valley Tuesday. Pattern is more reminiscent of late fall 
or winter than mid to late Spring. Unsure how likely this is to 
happen, but this is at least the second run in a row that i've seen 
do this. Will have to wait and see, but right now it looks like a 
cold/wet end to April. 


Carney 


&& 


Aviation: (for the 12z tafs through 12z Thursday morning) 
issued at 628 am CDT Wed Apr 23 2014 


VFR flight conditions will continue to prevail this forecast 
period, with winds veering and becoming more southerly as the 
surface ridge moves off to the east. The next system which will 
impact the area is taking shape over the plains, and as it moves 
east, area taf sites will see winds increase to roughly 10-15kt by 
late morning/early afternoon in response to a tightening pressure 
gradient and increased southerly flow. The aforementioned pressure 
gradient should also be enough to produce some gusts around 
20-22kt beginning by late afternoon, mainly impacting kcou and 
KUIN. Only increasing midlevel clouds are expected through the 
period, and while there is a chance for precipitation to move into 
central and northeast Missouri late Wednesday night, exact timing 
has yet to be pinned down, and as the onset would be in the last 
few hours of the forecast period, have not included mention at 
this time. 


Specifics for kstl: 
VFR flight conditions will prevail through the forecast period, 
with winds continuing to veer and become more southerly as the 
surface ridge moves east and the next system to impact the area 
takes shape over the plains. Expect winds to increase to about 
12-14kt by early afternoon, remaining fairly steady overnight, and 
become gusty Thursday morning as the surface pressure gradient 
tightens ahead of the approaching system. Showers and 
thunderstorms will move through the area on Thursday, though exact 
timing for impact at kstl has yet to be pinned down, and as it 
would likely be within the last couple hours of the forecast 
period, have not mentioned it in the taf at this time. Prior to 
the storms, expect a gradual increase in midlevel clouds 
overspreading the area from west to east today/tonight. 


Jp 


&& 


Preliminary point temperatures/pops: 
Saint Louis 69 52 72 52 / 5 10 80 30 
Quincy 66 49 66 46 / 10 20 80 20 
Columbia 72 53 70 47 / 10 30 80 10 
Jefferson City 75 53 70 47 / 10 20 80 10 
Salem 65 49 72 49 / 5 5 70 50 
Farmington 69 48 73 47 / 5 5 80 30 


&& 


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


$$ 


Weather forecast office lsx 












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