Saint Charles, Missouri Weather Conditions

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Current Conditions

  • 18°
  • Overcast
  • Wind: NW 17 mph
  • Humidity: 62%
  • Visibility: 10.0 miles
  • Dew Point: 7°
  • Pressure: 30.43 in. +
  • Heat Index: 3

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Next 12 Hours

6  pm
9  pm
12  am
3  am
6  am
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Clear
Clear
16°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Snow
  • High: 23 °
  • Low: 1 °
  • Snow
  • Friday
  • Partly Cloudy
  • High: 18 °
  • Low: 5 °
  • Partly Cloudy
  • Saturday
  • Snow
  • High: 28 °
  • Low: 23 °
  • Snow
  • Sunday
  • Chance of Snow
  • High: 39 °
  • Low: 23 °
  • Chance of Snow
  • Monday
  • Partly Cloudy
  • High: 37 °
  • Low: 27 °
  • Partly Cloudy

Forecast for Saint Charles, Missouri

Updated: 3:00 PM CST on February 26, 2015

  • Thursday

    Overcast with snow, then a chance of snow in the afternoon. High of 23F with a windchill as low as 7F. Breezy. Winds from the North at 15 to 20 mph. Chance of snow 90%.

  • Thursday Night

    Partly cloudy. Low of 1F. Winds from the NNW at 10 to 15 mph.

  • Friday

    Partly cloudy. High of 18F. Winds from the NNW at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 5F with a windchill as low as -6F. Winds from the SE at 5 to 10 mph.

  • Saturday

    Partly cloudy with a chance of snow in the afternoon. High of 28F with a windchill as low as -2F. Winds from the ESE at 5 to 15 mph. Chance of snow 30%.

  • Saturday Night

    Overcast with snow, then a chance of snow after midnight. Low of 23F with a windchill as low as 14F. Winds from the SE at 5 to 10 mph. Chance of snow 50% with accumulations up to 2 in. possible.

  • Sunday

    Overcast with a chance of snow and rain showers, then a chance of snow and a chance of rain in the afternoon. High of 39F. Winds from the South at 5 to 10 mph. Chance of snow 70% with accumulations up to 1 in. possible.

  • Sunday Night

    Partly cloudy with a chance of snow in the evening, then overcast with a chance of snow. Fog overnight. Low of 23F. Winds from the West at 5 to 10 mph shifting to the North after midnight. Chance of snow 60% with accumulations up to 1 in. possible.

  • Monday

    Mostly cloudy in the morning, then overcast. Fog early. High of 37F with a windchill as low as 18F. Winds from the East at 5 to 15 mph.

  • Monday Night

    Mostly cloudy with a chance of snow. Fog overnight. Low of 27F with a windchill as low as 16F. Breezy. Winds from the SE at 10 to 20 mph. Chance of snow 70% with accumulations up to 2 in. possible.

  • Tuesday

    Partly cloudy with a chance of rain. Fog early. High of 59F. Breezy. Winds from the SSW at 10 to 20 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Tuesday Night

    Partly cloudy. Low of 18F. Breezy. Winds from the NW at 15 to 25 mph.

  • Wednesday

    Partly cloudy with a chance of snow. High of 37F with a windchill as low as 0F. Breezy. Winds from the NNW at 20 to 25 mph. Chance of snow 20%.

  • Wednesday Night

    Partly cloudy. Low of 7F with a windchill as low as -8F. Breezy. Winds from the NNW at 20 to 25 mph.

  • Thursday

    Partly cloudy. High of 30F with a windchill as low as -2F. Breezy. Winds from the WNW at 15 to 20 mph.

  • Thursday Night

    Clear. Low of 14F with a windchill as low as 5F. Winds from the WSW at 5 to 10 mph.

  • Friday

    Clear. Fog early. High of 23F. Winds from the SSW at 5 to 10 mph.

  • Friday Night

    Clear. Fog overnight. Low of 19F. Winds less than 5 mph.

  • Saturday

    Clear. Fog early. High of 36F. Winds less than 5 mph.

  • Saturday Night

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

  • Sunday

    Clear. Fog early. High of 37F. Winds less than 5 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 25F. Winds less than 5 mph.

  • Monday

    Clear. Fog early. High of 55F. Winds from the South at 5 to 10 mph.

  • Monday Night

    Clear. Low of 25F. Winds from the SSW at 5 to 10 mph.

Severe Weather Alert Descriptions

 Local Storm Report 



02/26/2015 0548 am

Weldon Spring, St Charles County.

Snow m0.3 inch, reported by official NWS obs.


            0.3 inch new snowfall at the NWS office in Weldon
            Spring.




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Fox Hill, Saint Charles, MO

Updated: 6:25 PM CST

Temperature: 16.0 °F Dew Point: 6 °F Humidity: 64% Wind: West at 3.7 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: 10 °F Graphs

Location: Huntington Downs, Saint Charles, MO

Updated: 6:24 PM CST

Temperature: 19.8 °F Dew Point: 8 °F Humidity: 60% Wind: North at - Pressure: 30.42 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 6:25 PM CST

Temperature: 16.8 °F Dew Point: 7 °F Humidity: 66% Wind: Calm Pressure: 30.45 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 6:25 PM CST

Temperature: 18.2 °F Dew Point: 3 °F Humidity: 50% Wind: NNW at 2.0 mph Pressure: 30.44 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 6:25 PM CST

Temperature: 17.2 °F Dew Point: 7 °F Humidity: 65% Wind: NNE at 3.0 mph Pressure: 30.47 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 6:25 PM CST

Temperature: 17.5 °F Dew Point: 7 °F Humidity: 63% Wind: NW at 14.0 mph Pressure: 30.53 in Hourly Precipitation: 0.00 in Windchill: 4 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 6:25 PM CST

Temperature: 16.9 °F Dew Point: 7 °F Humidity: 64% Wind: NE at 3.1 mph Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: 12 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 6:25 PM CST

Temperature: 18.1 °F Dew Point: 9 °F Humidity: 68% Wind: WNW at 5.0 mph Pressure: 30.48 in Hourly Precipitation: 0.00 in Windchill: 11 °F Graphs

Location: Earth City, Earth City, MO

Updated: 7:16 PM EST

Temperature: 19.0 °F Dew Point: 8 °F Humidity: 62% Wind: WNW at 12.0 mph Pressure: 30.39 in Hourly Precipitation: 0.00 in Windchill: 6 °F Graphs

Location: manors of orchard glen, St. Peters, MO

Updated: 6:25 PM CST

Temperature: 16.0 °F Dew Point: -2 °F Humidity: 44% Wind: West at 6.0 mph Pressure: 30.43 in Hourly Precipitation: 0.00 in Windchill: 7 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 6:25 PM CST

Temperature: 16.9 °F Dew Point: 7 °F Humidity: 63% Wind: NNW at 2.0 mph Pressure: 30.50 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 6:16 PM CST

Temperature: 17.3 °F Dew Point: -18 °F Humidity: 19% Wind: NNE at 9.0 mph Pressure: 30.48 in Hourly Precipitation: 0.00 in Windchill: 6 °F Graphs

Location: Windwood,Nic S., St. Peters, MO

Updated: 6:15 PM CST

Temperature: 16.5 °F Dew Point: 6 °F Humidity: 63% Wind: WNW at 6.8 mph Pressure: 30.14 in Hourly Precipitation: - Windchill: 7 °F Graphs

Location: Alber Pointe Drive, Florissant, MO

Updated: 6:23 PM CST

Temperature: 18.0 °F Dew Point: 8 °F Humidity: 64% Wind: North at - Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Riverside at Albers Pointe, Florissant, MO

Updated: 6:24 PM CST

Temperature: 17.1 °F Dew Point: 6 °F Humidity: 66% Wind: North at - Pressure: 30.37 in Hourly Precipitation: - Windchill: 17 °F Graphs

Location: Hunters Valley, Saint Peters, MO

Updated: 6:20 PM CST

Temperature: 16.0 °F Dew Point: 5 °F Humidity: 62% Wind: Calm Pressure: 30.41 in Hourly Precipitation: - Windchill: 16 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 6:25 PM CST

Temperature: 16.5 °F Dew Point: 7 °F Humidity: 65% Wind: ENE at 12.1 mph Pressure: 30.45 in Hourly Precipitation: 0.00 in Windchill: 3 °F Graphs

Location: Saint Peters Hills, Saint Peters, MO

Updated: 6:25 PM CST

Temperature: 17.6 °F Dew Point: -2 °F Humidity: 42% Wind: North at 1.3 mph Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 6:23 PM CST

Temperature: 17.5 °F Dew Point: 8 °F Humidity: 65% Wind: NW at 5.0 mph Pressure: 30.46 in Hourly Precipitation: 0.00 in Windchill: 10 °F Graphs

Location: Maryland Heights, MO

Updated: 4:12 PM CST

Temperature: 22.4 °F Dew Point: 13 °F Humidity: 67% Wind: NNW at 1.0 mph Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 22 °F Graphs

Location: Jost Farm, Florissant, MO

Updated: 6:25 PM CST

Temperature: 17.1 °F Dew Point: 2 °F Humidity: 52% Wind: West at 3.1 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 12 °F Graphs

Location: McClay Trails, Saint Charles, MO

Updated: 6:22 PM CST

Temperature: 16.0 °F Dew Point: 5 °F Humidity: 62% Wind: WNW at 3.1 mph Pressure: 30.18 in Hourly Precipitation: - Windchill: 11 °F Graphs

Location: CommuniTree Gardens Nursery, St. Louis, MO

Updated: 6:21 PM CST

Temperature: 18.1 °F Dew Point: 8 °F Humidity: 65% Wind: NW at 4.9 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: 11 °F Graphs

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

Updated: 6:14 PM CST

Temperature: 17.8 °F Dew Point: 9 °F Humidity: 67% Wind: NNE at 7.3 mph Pressure: 30.33 in Hourly Precipitation: - Windchill: 8 °F Graphs

Location: C. Verripslaantje, Saint Charles, MO

Updated: 6:23 PM CST

Temperature: 18.5 °F Dew Point: 11 °F Humidity: 73% Wind: North at - Pressure: 30.31 in Hourly Precipitation: - Windchill: 18 °F Graphs

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

Updated: 6:25 PM CST

Temperature: 17.1 °F Dew Point: 9 °F Humidity: 69% Wind: Calm Pressure: 30.48 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: APRSWXNET Maryland Heights MO US, Maryland Heights, MO

Updated: 6:03 PM CST

Temperature: 20 °F Dew Point: 11 °F Humidity: 67% Wind: Calm Pressure: 30.43 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 6:24 PM CST

Temperature: 18.3 °F Dew Point: 10 °F Humidity: 69% Wind: WNW at 1.7 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 6:25 PM CST

Temperature: 16.7 °F Dew Point: -1 °F Humidity: 45% Wind: Calm Pressure: 30.37 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: APRSWXNET Berkeley MO US, Woodson Terrace, MO

Updated: 4:46 PM CST

Temperature: 22 °F Dew Point: 11 °F Humidity: 63% Wind: WNW at 5 mph Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 15 °F Graphs

Location: Honeygrove Court, Saint Louis, MO

Updated: 6:24 PM CST

Temperature: 24.6 °F Dew Point: 12 °F Humidity: 57% Wind: North at - Pressure: 30.42 in Hourly Precipitation: - Windchill: 25 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 6:10 PM CST

Temperature: 19.6 °F Dew Point: 9 °F Humidity: 63% Wind: WNW at 8.0 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Windchill: 10 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 6:20 PM CST

Temperature: 16.7 °F Dew Point: 7 °F Humidity: 65% Wind: NW at 5.3 mph Pressure: 30.33 in Hourly Precipitation: - Windchill: 9 °F Graphs

Location: Public Works Department Building, OFallon, MO

Updated: 6:25 PM CST

Temperature: 18.7 °F Dew Point: 8 °F Humidity: 61% Wind: Calm Pressure: 30.45 in Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 6:24 PM CST

Temperature: 17.5 °F Dew Point: 6 °F Humidity: 60% Wind: Calm Pressure: 30.39 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Country Crossing - Birdie Hills and Treeshadow, St. Peters, MO

Updated: 6:16 PM CST

Temperature: 16.7 °F Dew Point: 6 °F Humidity: 63% Wind: North at 7.8 mph Pressure: 30.29 in Hourly Precipitation: - Windchill: 6 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 6:22 PM CST

Temperature: 15.2 °F Dew Point: 6 °F Humidity: 67% Wind: North at 4.0 mph Pressure: 30.41 in Hourly Precipitation: 0.00 in Windchill: 9 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 6:25 PM CST

Temperature: 18.7 °F Dew Point: 8 °F Humidity: 63% Wind: ESE at 2.3 mph Pressure: 30.40 in Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

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

Updated: 6:25 PM CST

Temperature: 16.9 °F Dew Point: 6 °F Humidity: 61% Wind: Calm Pressure: 30.42 in Hourly Precipitation: 0.00 in Windchill: 17 °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 
538 PM CST Thu Feb 26 2015 


Short term: (through late tonight) 
issued at 327 PM CST Thu Feb 26 2015 


Cold air continues to filter into the area as a strong surface 
ridge noses into the area. The final glimpses of light snow 
flurries are coming to an end near the St. Louis Metro area, with 
maybe another hour or two before the snow completely cuts off. 
Regardless of how much longer the flurries continue, further 
accumulations through the evening are very unlikely, so have 
generally trended pops downward through the rest of the evening. 
Overnight lows will be rather chilly as the surface high moves 
overhead, with temperatures on Friday morning reaching between 0 
and 10 degrees along and south of I-70, with temperatures between 
0 and -5 across areas north of I-70. With the new snow pack over 
far northern Missouri and good radiational cool and little to no 
wind, there could be few isolated spots dropping to between -5 and 
-10 over far northern Missouri and Illinois. Since the surface 
high will be overhead for the night expect winds to drop off to 
around 0 to 5 mph, especially over the snow pack where the surface 
ridge will be more centered. This will help keep the wind chill 
values from plummeting too much. With wc values generally in the 
-10 to -15 range in far north Missouri and Illinois have opted to 
forgo a Wind Chill Advisory for that area, at least for now. Will 
let the evening and midnight shift take one more look at it. 


Long term: (friday through next thursday) 
issued at 327 PM CST Thu Feb 26 2015 


With the cold air solidly in place over the are it will set the 
stage for a winter system to affect a large portion of the 
forecast area for the weekend and again early next week. Broad 
troughing over the northern part of the Continental U.S. Will bring mostly 
zonal mid level flow over the forecast area. As a more potent area 
of low pressure energy digs into the West Coast a low level trough will 
take form over the interior mountain west and start a flow of warm 
air advection into the area. With the warm/moist air 
isentropically lifting over the cooler air in place it will 
gradually re saturate the atmospheric column and start to 
precipitate Saturday afternoon to evening across central Missouri 
and probably Saturday night for eastern Missouri and western 
Illinois. Since the thermal profile will be very cold, expect this 
activity to be all in the form of snow. At least for now it does 
not appear that p-type will be in much question, especially for 
the Saturday night period. At this time it does not appear that 
there will be much in the way of heavy snow, but the prolonged 
nature of the warm air advection, as the low stays anchored over 
the West Coast will provide at least 24, and perhaps 36 hours of 
very light snow, which will likely accumulate several inches 
through the weekend. Right now the models still favor a track of 
the higher snow amounts to be generally along and north of 
Interstate 70, and this makes sense since this corridor will have 
the better chance to maintain a cool enough thermal profile to 
keep everything snow. Farther south, in southern MO and Illinois there 
is a chance that some warmer low level temps could creep into the 
thermal profile, which would maybe cause some mixed precip types 
on Sunday. Given some lingering model discrepancy the confidence 
on specific amounts in a given location are still somewhat low to 
medium, however it does appear that areas along and north of I-70 
will see several inches of accumulating snow, perhaps getting up 
to 4 to 6 inches. As stated above, Standard uncertainty caveats 
apply, so amounts and locations will likely shift as we approach 
the event. 


The focus then shifts to early next week as another wave of energy 
ejects out of the Desert Southwest and into the forecast area. 
This trough will be a bit more potent than the weekend system, and 
will likely draw in more low level warm air and more moisture. At 
this point both ec and GFS would hint toward a large portion of 
the forecast area, especially areas south of I-70 getting mostly 
rain, with a few hours on either side of the rainy period of 
wintry mix as the thermal column warms up. Confidence is rising 
that there will be at least a decent amount of precipitation over 
a widespread area through the early to mid week period, but again, 
thermal column uncertainty will preclude any hard amounts and 
locations for any specific precip type. By late next week another 
strong cold front will sweep through and scour out the moisture, 
effectively ending chance for pops and ushering another cool down 
for the end of next week. 


&& 


Aviation: (for the 00z tafs through 00z Friday evening) 
issued at 528 PM CST Thu Feb 26 2015 


Only patches of clouds expected to remain overnight. Nly winds 
will remain thru the night, but gradually diminish. Expect some cumulus 
to develop Fri morning at uin, but uncertainty exists whether or 
not bkn cigs will develop or not. Otherwise, winds will remain 
light and nly with bkn mid clouds moving into the region during 
the afternoon. 


Specifics for kstl/ksus/kcps: area of clouds shud continue to 
slowly move sewd and break up after sunset this eve. Winds will 
gradually diminish this eve and remain light thru the remainder of 
the fcst. Mid cloud deck will advect into the region Fri 
afternoon. 


Tilly 


&& 


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


$$ 


Weather forecast office lsx 



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