Saint Peters, Missouri Weather Conditions

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Current Conditions

  • 44°
  • Overcast
  • Wind: Calm
  • Humidity: 89%
  • Visibility: 10.0 miles
  • Dew Point: 41°
  • Pressure: 29.60 in. -

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Next 12 Hours

6  am
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Rain
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41°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Rain
  • High: 45 °
  • Low: 23 °
  • Rain
  • Monday
  • Partly Cloudy
  • High: 45 °
  • Low: 30 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 45 °
  • Low: 27 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 52 °
  • Low: 41 °
  • Partly Cloudy
  • Thursday
  • Partly Cloudy
  • High: 50 °
  • Low: 28 °
  • Partly Cloudy

Forecast for Saint Peters, Missouri

Updated: 3:00 AM CST on January 25, 2015

  • Sunday

    Overcast with rain. High of 45F. Breezy. Winds from the West at 10 to 20 mph. Chance of rain 80%.

  • Sunday Night

    Overcast with a chance of snow in the evening, then partly cloudy. Low of 23F. Breezy. Winds from the NNW at 10 to 20 mph. Chance of snow 30%.

  • Monday

    Overcast in the morning, then partly cloudy. High of 45F. Winds from the West at 5 to 10 mph.

  • Monday Night

    Partly cloudy in the evening, then clear. Low of 30F. Winds from the West at 5 to 10 mph.

  • Tuesday

    Partly cloudy. High of 45F. Winds from the NW at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy in the evening, then clear. Low of 27F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 52F. Breezy. Winds from the SSE at 10 to 20 mph.

  • Wednesday Night

    Clear. Low of 41F. Winds from the South at 10 to 15 mph.

  • Thursday

    Mostly cloudy in the morning, then overcast. High of 50F. Breezy. Winds from the NW at 20 to 25 mph.

  • Thursday Night

    Partly cloudy. Low of 28F. Winds from the NNW at 5 to 20 mph.

  • Friday

    Clear. High of 43F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 27F. Winds from the East at 5 to 10 mph.

  • Saturday

    Partly cloudy with a chance of snow. High of 36F with a windchill as low as 19F. Winds from the East at 5 to 10 mph. Chance of snow 20%.

  • Saturday Night

    Partly cloudy with a chance of snow. Low of 30F. Winds less than 5 mph. Chance of snow 20% with accumulations up to 1 in. possible.

  • Sunday

    Clear. High of 32F with a windchill as low as 18F. Winds from the North at 5 to 10 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 16F with a windchill as low as 9F. Winds from the NNW at 5 to 10 mph.

  • Monday

    Clear. High of 27F. Winds from the NW at 5 to 10 mph.

  • Monday Night

    Clear. Low of 14F. Winds less than 5 mph.

  • Tuesday

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

  • Tuesday Night

    Clear. Low of 18F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 32F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Fog overnight. Low of 18F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: St. Peters, St. Peters, MO

Updated: 6:12 AM CST

Temperature: 44.4 °F Dew Point: 42 °F Humidity: 91% Wind: WSW at 2.0 mph Pressure: 29.58 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Saint Peters Hills, Saint Peters, MO

Updated: 6:12 AM CST

Temperature: 44.6 °F Dew Point: 42 °F Humidity: 90% Wind: Calm Pressure: 29.43 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Hunters Valley, Saint Peters, MO

Updated: 6:08 AM CST

Temperature: 43.5 °F Dew Point: 42 °F Humidity: 93% Wind: ESE at 2.7 mph Pressure: 29.46 in Hourly Precipitation: - Windchill: 44 °F Graphs

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

Updated: 6:06 AM CST

Temperature: 44.2 °F Dew Point: 43 °F Humidity: 94% Wind: Calm Pressure: 29.45 in Hourly Precipitation: - Windchill: 44 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 6:12 AM CST

Temperature: 44.6 °F Dew Point: 39 °F Humidity: 80% Wind: WSW at 1.8 mph Pressure: 29.56 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Harmony Ridge, Cottleville, MO

Updated: 6:12 AM CST

Temperature: 44.1 °F Dew Point: 42 °F Humidity: 94% Wind: Calm Pressure: 29.48 in Hourly Precipitation: - Windchill: 44 °F Graphs

Location: McClay Trails, Saint Charles, MO

Updated: 6:05 AM CST

Temperature: 43.9 °F Dew Point: 42 °F Humidity: 93% Wind: ESE at 2.2 mph Pressure: 29.02 in Hourly Precipitation: - Windchill: 44 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 6:12 AM CST

Temperature: 44.3 °F Dew Point: 42 °F Humidity: 89% Wind: SW at 3.0 mph Pressure: 29.64 in Hourly Precipitation: 0.01 in Windchill: 44 °F Graphs

Location: APRSWXNET St. Peters MO US, Saint Peters, MO

Updated: 5:46 AM CST

Temperature: 44 °F Dew Point: 41 °F Humidity: 90% Wind: SW at 2 mph Pressure: 29.59 in Hourly Precipitation: 0.02 in Windchill: 44 °F Graphs

Location: Pennial Park, O'Fallon, MO

Updated: 6:10 AM CST

Temperature: 43.7 °F Dew Point: 41 °F Humidity: 89% Wind: South at 2.0 mph Pressure: 29.55 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: COTTLEVILLE/HARVESTER, St. Charles, MO

Updated: 6:12 AM CST

Temperature: 44.6 °F Dew Point: 42 °F Humidity: 91% Wind: Calm Pressure: 29.55 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 6:10 AM CST

Temperature: 44.6 °F Dew Point: 42 °F Humidity: 91% Wind: WSW at 3.0 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 6:12 AM CST

Temperature: 44.1 °F Dew Point: 42 °F Humidity: 93% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Ridgetop Estates, OFallon, MO

Updated: 6:10 AM CST

Temperature: 43.9 °F Dew Point: 42 °F Humidity: 94% Wind: West at 1.7 mph Pressure: 29.71 in Hourly Precipitation: - Windchill: 44 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 6:00 AM CST

Temperature: 45.7 °F Dew Point: 37 °F Humidity: 71% Wind: SW at 2.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 6:12 AM CST

Temperature: 44.2 °F Dew Point: 41 °F Humidity: 88% Wind: SSW at 4.6 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

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

Updated: 5:57 AM CST

Temperature: 44.4 °F Dew Point: 42 °F Humidity: 92% Wind: WSW at 2.7 mph Pressure: 29.31 in Hourly Precipitation: - Windchill: 44 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 5:58 AM CST

Temperature: 45.3 °F Dew Point: 42 °F Humidity: 89% Wind: WSW at 4.0 mph Pressure: 29.60 in Hourly Precipitation: 0.01 in Windchill: 43 °F Graphs

Location: Hyland Green, O'Fallon, MO

Updated: 6:12 AM CST

Temperature: 44.8 °F Dew Point: 43 °F Humidity: 93% Wind: Calm Pressure: 29.20 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 6:10 AM CST

Temperature: 44.6 °F Dew Point: 42 °F Humidity: 89% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Huntington Downs, Saint Charles, MO

Updated: 6:10 AM CST

Temperature: 45.7 °F Dew Point: 40 °F Humidity: 79% Wind: North at - Pressure: 29.59 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Royal Oaks, O'Fallon, MO

Updated: 6:12 AM CST

Temperature: 44.0 °F Dew Point: 42 °F Humidity: 92% Wind: SW at 5.0 mph Pressure: 29.59 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Little Oaks Drive, O'Fallon, MO

Updated: 6:10 AM CST

Temperature: 45.3 °F Dew Point: 41 °F Humidity: 85% Wind: North at - Pressure: 29.65 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 6:12 AM CST

Temperature: 44.2 °F Dew Point: 42 °F Humidity: 90% Wind: NNE at 1.1 mph Pressure: 29.55 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: The Boardwalk at WingHaven, OFallon, MO

Updated: 6:12 AM CST

Temperature: 44.8 °F Dew Point: 42 °F Humidity: 90% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Dardenne Prairie, Dardenne Prairie, MO

Updated: 6:10 AM CST

Temperature: 43.9 °F Dew Point: 38 °F Humidity: 79% Wind: SSW at 2.5 mph Pressure: 29.30 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 6:12 AM CST

Temperature: 43.5 °F Dew Point: 42 °F Humidity: 94% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Doris Avenue, O'Fallon, MO

Updated: 6:11 AM CST

Temperature: 46.4 °F Dew Point: 40 °F Humidity: 79% Wind: North at - Pressure: 29.68 in Hourly Precipitation: - Windchill: 46 °F Graphs

Location: Ridgepointe-Meadowbrook, Lake Saint Louis, MO

Updated: 6:12 AM CST

Temperature: 44.6 °F Dew Point: 42 °F Humidity: 89% Wind: SSW at 1.6 mph Pressure: 29.58 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Locksley Manor, Lake Saint Louis, MO

Updated: 6:12 AM CST

Temperature: 44.1 °F Dew Point: 42 °F Humidity: 93% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Fox Hill, Saint Charles, MO

Updated: 6:08 AM CST

Temperature: 42.8 °F Dew Point: 40 °F Humidity: 88% Wind: SSW at 1.1 mph Pressure: 30.12 in Hourly Precipitation: - Windchill: 43 °F Graphs

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

Updated: 6:12 AM CST

Temperature: 43.7 °F Dew Point: 42 °F Humidity: 94% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: CommuniTree Gardens Nursery, St. Louis, MO

Updated: 6:11 AM CST

Temperature: 43.5 °F Dew Point: 41 °F Humidity: 92% Wind: Calm Pressure: 29.11 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Lake Saint Louis, Lake Saint Louis, MO

Updated: 6:12 AM CST

Temperature: 44.9 °F Dew Point: 42 °F Humidity: 90% Wind: South at 2.0 mph Pressure: 29.58 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service St Louis MO 
322 am CST sun Jan 25 2015 


Short term: (through tonight) 
issued at 322 am CST sun Jan 25 2015 


Satellite data at 08z indicates The Heart of a strong clipper system 
over west-central Iowa and is chugging southeastward towards our 
region at a good rate. It is also close to forming a closed 
circulation as well. Increasing and solid areas of pcpn exist 
around this heart of the system over Iowa with an arm of patches of 
pcpn extending southward thru our region currently. All pcpn is 
currently rain over our region with surface temps in the 40s. An 
initial cold front extends thru northwest MO and southeast Kansas but 
the cold air advection associated with it is weak. A stronger shot of cold air is 
pushing thru the mid-MO River Valley in eastern NE and western Iowa. 


There is finally excellent model consensus on the structure and 
track of this system, with the GFS the big Winner on depicting a 
closed circulation and farther SW track first with the rest getting 
on board: the closed upper level system will track to close to the 
stl Metro area by midday and then into western Kentucky by nightfall. Two 
shots of pcpn will be the main players here, with the first out 
ahead of the system from stl Metro to southwest MO currently 
associated with strong vorticity and will shift a bit to the 
southeast thru midday. The second main area of pcpn will be the 
deformation zone itself currently in IA, and this will be dragged 
bodily southward as the system digs. The deformation zone is 
expected to impact the entire forecast area at some point, entering 
the northern County Warning Area in northern MO-central Illinois by late morning, and then 
not exiting areas to the south and east of stl Metro until evening. 


Thanks to sufficient cold air existing aloft, pcpn-types will 
largely be driven by surface temps. However, the more significant 
cold air push is expected to be delayed until shortly after the 
arrival of the deformation zone pcpn and will also be accompanied by 
strong gusty northwest winds. So pcpn-types look to be all rain at all 
locations thru 18z, with a gradual mix in of snow for northeast MO 
and west-central Illinois during early afternoon and making a run towards 
I-70 by nightfall. This trend to then continue into the evening for 
stl Metro and areas to the south and east. All-in-all, the 
appearance of the snow will probably not amount to much more than an 
hour or two, with a bit more for areas around uin and into central 
Illinois. Any snow accums will likely be confined to the uin area and 
areas heading into central Illinois but just a dusting is expected. 


The push of the cold air will need to be watched, however, with an 
earlier arrival and/or deeper/slower system will lead to increased 
snow amounts. 


Tes 


Long term: (monday through saturday) 
issued at 322 am CST sun Jan 25 2015 


Northwest flow aloft will continue to prevail thru Tuesday night with quiet 
wx expected. Temps will recover to above seasonable levels in MO 
and close to seasonable levels in Illinois. 


A shortwave disturbance is still on track for Wednesday night and 
have maintained mentionable pops for rain. If the surface low 
reflection can drop more to the south, will need to boost them 
significantly. Slight chances were also maintained for Saturday, 
but that is looking less of a possibility due to the northern 
influences dominating more--keeping a strong southern storm isolated 
well to the southwest. 


Mild temps areawide can be expected Wednesday, and perhaps into 
Thursday depending on the frontal timing, but it looks like a cooler 
period is then in store for next weekend. The ec and GFS have split 
on how to handle an Arctic boundary, with the GFS backing way off. 
So for now, a return to seasonable temps for next weekend the best 
bet until a better consensus is achieved. 


Tes 


&& 


Aviation: (for the 06z tafs through 06z Sunday night) 
issued at 1133 PM CST Sat Jan 24 2015 


Surface low over south central Iowa to continue tracking southeast 
through forecast area during forecast period. Cigs to gradually 
lower as system approaches with MVFR cigs/vsbys expected with 
onset of main area of rain...between 11z and 14z Sunday. Will see 
dry slot move into kcou and Metro area tafs by mid morning, so 
kept vcsh mention. As for KUIN, they will remain MVFR and actually 
lower to IFR as they are closer to track of surface low, lifting 
back to MVFR by this evening. Then as colder air filters in this 
afternoon, rain to pickup and become mixed with snow before coming 
to an end this evening. Cigs to remain MVFR through rest of 
forecast period. As for winds, southwest winds to veer to the west 
then north and become gusty to around 25kts at times. North winds 
to diminish by this evening but remain around 10 kts. 


Specifics for kstl: 
surface low over south central Iowa to continue tracking southeast 
through forecast area during forecast period. Cigs to gradually 
lower as system approaches with MVFR cigs/vsbys expected with 
onset of main area of rain...by 14z Sunday. Will see 
dry slot move into Metro area tafs by 17z Sunday, so kept vcsh mention. 
Then as colder air filters in this afternoon, rain to pickup and 
become mixed with snow before coming to an end this evening. Cigs 
to remain MVFR through rest of forecast period. As for winds, 
southwest winds to veer to the west then north and become gusty to 
around 25kts at times by 21z Sunday. North winds to diminish by this 
evening but remain around 10 kts. 


Byrd 


&& 


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


$$ 


Weather forecast office lsx 



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