Saint Peters, Missouri Weather Conditions

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Current Conditions

  • 31°
  • Light Snow
  • Wind: NE 6 mph
  • Humidity: 89%
  • Visibility: 1.5 miles
  • Dew Point: 28°
  • Pressure: 30.26 in. -
  • Heat Index: 25

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Next 12 Hours

12  pm
3  pm
6  pm
9  pm
12  am
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
30°
36°
34°
32°
30°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Snow
  • High: 36 °
  • Low: 28 °
  • Snow
  • Friday
  • Mostly Cloudy
  • High: 36 °
  • Low: 30 °
  • Mostly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 41 °
  • Low: 28 °
  • Partly Cloudy
  • Sunday
  • Mostly Cloudy
  • High: 46 °
  • Low: 34 °
  • Mostly Cloudy
  • Monday
  • Chance of Rain
  • High: 45 °
  • Low: 39 °
  • Chance of Rain

Forecast for Saint Peters, Missouri

Updated: 9:00 AM CST on December 18, 2014

  • Thursday

    Overcast with snow, then a chance of snow in the afternoon. High of 36F. Winds less than 5 mph. Chance of snow 80%.

  • Thursday Night

    Overcast. Low of 28F. Winds less than 5 mph.

  • Friday

    Mostly cloudy. High of 36F. Winds less than 5 mph.

  • Friday Night

    Overcast. Low of 30F. Winds less than 5 mph.

  • Saturday

    Overcast in the morning, then partly cloudy. High of 41F. Winds less than 5 mph.

  • Saturday Night

    Mostly cloudy. Fog overnight. Low of 28F. Winds from the East at 5 to 10 mph shifting to the SSE after midnight.

  • Sunday

    Overcast. Fog early. High of 46F. Winds from the SSE at 5 to 10 mph.

  • Sunday Night

    Overcast in the evening, then mostly cloudy. Low of 34F. Winds from the South at 5 to 10 mph.

  • Monday

    Overcast with a chance of rain in the afternoon. Fog early. High of 45F. Winds from the South at 10 to 15 mph. Chance of rain 20%.

  • Monday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 39F. Winds from the SSW at 10 to 15 mph. Chance of rain 30%.

  • Tuesday

    Overcast with a chance of rain. High of 43F. Breezy. Winds from the West at 10 to 20 mph. Chance of rain 20%.

  • Tuesday Night

    Mostly cloudy. Low of 32F with a windchill as low as 25F. Breezy. Winds from the WNW at 10 to 20 mph.

  • Wednesday

    Overcast. High of 37F with a windchill as low as 23F. Breezy. Winds from the West at 20 to 25 mph.

  • Wednesday Night

    Partly cloudy. Low of 27F with a windchill as low as 18F. Breezy. Winds from the West at 15 to 20 mph.

  • Thursday

    Partly cloudy. High of 37F with a windchill as low as 16F. Winds from the West at 10 to 15 mph.

  • Thursday Night

    Overcast with a chance of snow. Low of 30F. Winds less than 5 mph. Chance of snow 30% with accumulations up to 2 in. possible.

  • Friday

    Overcast with a chance of snow. High of 36F with a windchill as low as 27F. Winds from the WNW at 5 to 10 mph. Chance of snow 20%.

  • Friday Night

    Mostly cloudy. Low of 25F. Winds from the WNW at 5 to 10 mph.

  • Saturday

    Clear. High of 30F with a windchill as low as 19F. Winds from the WNW at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 23F. Winds less than 5 mph.

  • Sunday

    Clear. High of 28F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 23F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 12:11 PM CST

Temperature: 33.4 °F Dew Point: 30 °F Humidity: 87% Wind: East at 1.7 mph Pressure: 30.10 in Hourly Precipitation: - Windchill: 33 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 12:18 PM CST

Temperature: 32.2 °F Dew Point: 29 °F Humidity: 88% Wind: Calm Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 12:07 PM CST

Temperature: 32.6 °F Dew Point: 30 °F Humidity: 88% Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 12:18 PM CST

Temperature: 31.9 °F Dew Point: 29 °F Humidity: 86% Wind: NNE at 2.0 mph Pressure: 30.32 in Hourly Precipitation: 0.01 in Windchill: 32 °F Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 12:15 PM CST

Temperature: 33.6 °F Dew Point: 30 °F Humidity: 87% Wind: South at 1.0 mph Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

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

Updated: 12:18 PM CST

Temperature: 33.4 °F Dew Point: 27 °F Humidity: 77% Wind: Calm Pressure: 30.25 in Hourly Precipitation: 0.01 in Windchill: 33 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 12:18 PM CST

Temperature: 32.2 °F Dew Point: 29 °F Humidity: 87% Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 12:18 PM CST

Temperature: 33.9 °F Dew Point: 27 °F Humidity: 77% Wind: ENE at 3.5 mph Pressure: 30.27 in Hourly Precipitation: 0.01 in Windchill: 31 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 12:18 PM CST

Temperature: 32.8 °F Dew Point: 29 °F Humidity: 87% Wind: ENE at 2.0 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: CommuniTree Gardens Nursery, St. Louis, MO

Updated: 12:17 PM CST

Temperature: 32.7 °F Dew Point: 29 °F Humidity: 87% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 12:17 PM CST

Temperature: 32.7 °F Dew Point: 26 °F Humidity: 76% Wind: Calm Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: St. Peters, St. Peters, MO

Updated: 12:18 PM CST

Temperature: 32.2 °F Dew Point: 29 °F Humidity: 88% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.01 in Windchill: 32 °F Graphs

Location: Maryland Heights, MO

Updated: 12:17 PM CST

Temperature: 33.5 °F Dew Point: 30 °F Humidity: 86% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 12:16 PM CST

Temperature: 31.4 °F Dew Point: 28 °F Humidity: 89% Wind: ENE at 1.0 mph Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Fox Hill, Saint Charles, MO

Updated: 12:17 PM CST

Temperature: 32.2 °F Dew Point: 26 °F Humidity: 79% Wind: NE at 3.7 mph Pressure: 29.67 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 12:17 PM CST

Temperature: 34.7 °F Dew Point: 31 °F Humidity: 85% Wind: NNW at 1.1 mph Pressure: 29.71 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 12:06 PM CST

Temperature: 35.1 °F Dew Point: 31 °F Humidity: 84% Wind: Calm Pressure: 30.17 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 12:18 PM CST

Temperature: 33.6 °F Dew Point: 30 °F Humidity: 87% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 12:18 PM CST

Temperature: 33.4 °F Dew Point: 30 °F Humidity: 86% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

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

Updated: 12:17 PM CST

Temperature: 33.4 °F Dew Point: 30 °F Humidity: 86% Wind: ESE at 1.7 mph Pressure: 30.12 in Hourly Precipitation: - Windchill: 33 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 12:18 PM CST

Temperature: 33.6 °F Dew Point: 30 °F Humidity: 86% Wind: Calm Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 11:50 AM CST

Temperature: 31.6 °F Dew Point: 28 °F Humidity: 87% Wind: Calm Pressure: 29.64 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

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

Updated: 12:13 PM CST

Temperature: 30.8 °F Dew Point: 27 °F Humidity: 87% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.01 in Windchill: 31 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 12:18 PM CST

Temperature: 33.7 °F Dew Point: 28 °F Humidity: 81% Wind: Calm Pressure: 30.20 in Hourly Precipitation: 0.01 in Windchill: 34 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 12:18 PM CST

Temperature: 34.6 °F Dew Point: 29 °F Humidity: 80% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.02 in Windchill: 35 °F Graphs

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

Updated: 12:18 PM CST

Temperature: 33.3 °F Dew Point: 30 °F Humidity: 88% Wind: Calm Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 12:15 PM CST

Temperature: 34.7 °F Dew Point: 28 °F Humidity: 77% Wind: ESE at 2.0 mph Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Public Works Department Building, OFallon, MO

Updated: 12:15 PM CST

Temperature: 34.0 °F Dew Point: 30 °F Humidity: 87% Wind: East at 1.0 mph Pressure: 30.26 in Hourly Precipitation: 0.05 in Windchill: 34 °F Graphs

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

Updated: 12:08 PM CST

Temperature: 35.1 °F Dew Point: 30 °F Humidity: 80% Wind: NE at 1.1 mph Pressure: 30.17 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 12:18 PM CST

Temperature: 33.2 °F Dew Point: 29 °F Humidity: 84% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.01 in Windchill: 33 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 12:15 PM CST

Temperature: 31.2 °F Dew Point: 28 °F Humidity: 88% Wind: East at 1.0 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

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

Updated: 12:18 PM CST

Temperature: 31.9 °F Dew Point: 28 °F Humidity: 85% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

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

Updated: 12:18 PM CST

Temperature: 31.0 °F Dew Point: 29 °F Humidity: 92% Wind: NE at 4.0 mph Pressure: 30.67 in Hourly Precipitation: 0.01 in Windchill: 27 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 12:17 PM CST

Temperature: 31.2 °F Dew Point: 28 °F Humidity: 87% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 12:15 PM CST

Temperature: 31.6 °F Dew Point: 28 °F Humidity: 87% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service St Louis MO 
1214 PM CST Thu Dec 18 2014 


Update: 
issued at 1210 PM CST Thu Dec 18 2014 


Snowfall lingering over the region late this morning should 
continue to wind down heading into the afternoon. I've continued 
some mention of drizzle...primarily in the deeper low level 
moisture on the Missouri side of the Mississippi River. 


Truett 


&& 


Short term: (through late this afternoon) 
issued at 323 am CST Thu Dec 18 2014 


Vigorous little shortwave over northern Kansas is producing a broad 
area of snow over parts of north central Missouri back toward west 
central Missouri. The going forecast looks pretty good in general; 
however current radar and latest short range model guidance suggests 
that there will be more precipitation across parts of northeast 
Missouri and west central Illinois than previously forecast. Low to 
mid level frontogenesis and isentropic lift will increase through 
15z as the wave passes north of the area. The shortwave should be 
dampening out as it moves into an area of longwave ridging, so 
precipitation should be on the decline through the morning, and 
there is still a wedge of low level dry air to overcome, but 
measurable precip does look likely across most of the area. 
Accumulations still look pretty light with most areas receiving an 
inch or less except for parts of central and southeast Missouri 
where an inch or two of wet snow is likely to accumulate. With 
temperatures hovering right around freezing, expect some slick spots 
on any untreated roads this morning, but temperatures should be 
rising above freezing in most locations by mid to late morning so 
that should alleviate any Road issues. Additionally, expect precip 
to be winding down pretty rapidly after 15z as the shortwave dampens 
out and the primary band of frontogenesis and isentropic lift 
weakens. The one place where there may be lingering problems is 
northeast Missouri and west central Illinois where temperatures may 
struggle to break freezing this afternoon. 


Carney 


Long term: (tonight through wednesday) 
issued at 350 am CST Thu Dec 18 2014 


Relatively quiet weather will prevail over the area for the rest of 
the week with a large surface ridge extending from southern Canada 
through the upper Midwest and Great Lakes region down into the 
mid-Mississippi Valley. Another wave will ripple through in the 
quasi-zonal flow aloft Friday night. The lower atmosphere looks too 
dry to allow any precip to reach the ground from this wave...all 
except for southern portions of the area. Have kept chance/slight 
chance pops across southeast Missouri and southwest Illinois with 
little or no qpf associated with them. 


Saturday and Sunday look warmer with southwest flow deepening ahead 
of the next trof with temperatures rising to around normal on 
Saturday and above normal on Sunday. Medium range guidance looks to 
be in good agreement that the trof will deepen across the central 
U.S. Monday into Wednesday. This should bring US another period of 
cloudy and occasionally rainy weather with the best probabilities of 
precipitation Monday night into Tuesday. The atmosphere will likely 
be too warm for much frozen precipitation until possibly Tuesday or 
Tuesday night. Quantitative precipitation forecast looks pretty light on the GFS and European model (ecmwf) by the 
time the atmosphere is cold enough to snow, but there may be a few 
periods of flurries or light snow Tuesday and Tuesday night. 


Carney 


&& 


Aviation: (for the 18z tafs through 18z Friday afternoon) 
issued at 1210 PM am CST Thu Dec 18 2014 


Snowfall should continue to diminish across the area heading into 
the afternoon, with a corresponding loss of visibility 
restrictions as the snowfall ebbs. Bigger question is likely to 
be ceiling trends. Low level moisture has IFR stratus locked 
across the southern half of mo; however, surface ridge extending 
from upper msvly to lower Ohio Valley appears to be keeping some 
dry low level air locked over eastern sections of our County Warning Area. This 
appears to be keeping the stratus locked in place, and any 
lowering of ceilings in this drier air has been associated with 
pockets of heavier snow...fairly brief and rather spotty in nature. 
Have attempted to reflect this by keeping ceilings from stl to uin 
in the high end MVFR range this afternon, while cou should remain 
locked in IFR stratus. With time heading into the evening, 
anticipate that IFR stratus and fog will attempt to form aong this 
stl-uin line, while the existing stratus deck over mid MO will 
lower and head into LIFR range. 


Specifics for kstl: as suggested by primary afd, stl area appears 
to be on the E fringes of much more significant low level 
moisture, and cloud/ceiling trends will likely be very tricky as a 
result. For now have gone with high end MVFR cigs for the 
afternoon as the snowfall gradually comes to a end, with ceilings 
and visibilities lowering tonight as boundary layer cools and 
heads into the IFR Cat after 06z. 


Truett 


&& 


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


$$ 


Weather forecast office lsx 



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