Saint Ann, Missouri Weather Conditions

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Current Conditions

  • 46°
  • Light Rain
  • Wind: WNW 23 mph
  • Humidity: 87%
  • Visibility: 10.0 miles
  • Dew Point: 43°
  • Pressure: 29.24 in. +
  • Heat Index: 38

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Next 12 Hours

3  am
6  am
9  am
12  pm
3  pm
Rain
Rain
Rain
Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
48°
39°
39°
41°
37°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Rain
  • High: 45 °
  • Low: 28 °
  • Rain
  • Tuesday
  • Partly Cloudy
  • High: 37 °
  • Low: 30 °
  • Partly Cloudy
  • Wednesday
  • Chance Rain
  • High: 46 °
  • Low: 27 °
  • Chance Rain
  • Thursday
  • Partly Cloudy
  • High: 39 °
  • Low: 30 °
  • Partly Cloudy
  • Friday
  • Mostly Cloudy
  • High: 52 °
  • Low: 39 °
  • Mostly Cloudy

Forecast for Saint Ann, Missouri

Updated: 3:00 AM CST on November 24, 2014

  • Monday

    Overcast with rain, then a chance of rain in the afternoon. High of 45F. Windy. Winds from the West at 20 to 25 mph with gusts to 35 mph. Chance of rain 20%.

  • Monday Night

    Overcast in the evening, then clear. Low of 28F. Winds from the West at 10 to 15 mph.

  • Tuesday

    Clear in the morning, then partly cloudy. High of 37F with a windchill as low as 23F. Winds from the West at 5 to 15 mph.

  • Tuesday Night

    Partly cloudy. Low of 30F. Winds from the South at 5 to 10 mph.

  • Wednesday

    Overcast with a chance of rain. High of 46F. Winds from the SSW at 5 to 15 mph. Chance of rain 20%.

  • Wednesday Night

    Overcast in the evening, then partly cloudy. Low of 27F. Winds from the NW at 10 to 15 mph.

  • Thursday

    Clear in the morning, then overcast. High of 39F with a windchill as low as 21F. Winds from the NW at 10 to 15 mph.

  • Thursday Night

    Partly cloudy. Low of 30F. Winds from the NE at 5 to 10 mph shifting to the SE after midnight.

  • Friday

    Overcast. High of 52F. Breezy. Winds from the South at 15 to 20 mph.

  • Friday Night

    Mostly cloudy. Low of 39F. Winds from the South at 10 to 15 mph.

  • Saturday

    Overcast. Fog early. High of 63F. Winds from the SW at 10 to 15 mph.

  • Saturday Night

    Mostly cloudy. Low of 32F. Breezy. Winds from the NNW at 10 to 20 mph.

  • Sunday

    Mostly cloudy. High of 68F. Winds from the NNE at 10 to 15 mph.

  • Sunday Night

    Partly cloudy. Low of 30F with a windchill as low as 21F. Winds from the East at 10 to 15 mph.

  • Monday

    Overcast with a chance of rain. High of 41F. Winds from the SE at 10 to 15 mph. Chance of rain 20%.

  • Monday Night

    Overcast with a chance of a thunderstorm. Low of 39F. Winds from the SSE at 5 to 10 mph. Chance of rain 30% with rainfall amounts near 0.4 in. possible.

  • Tuesday

    Overcast with a chance of a thunderstorm. Fog early. High of 59F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Overcast with a chance of a thunderstorm. Fog overnight. Low of 43F. Winds from the South at 5 to 10 mph. Chance of rain 30% with rainfall amounts near 0.2 in. possible.

  • Wednesday

    Mostly cloudy with a chance of a thunderstorm. Fog early. High of 52F. Winds from the SSW at 5 to 10 mph. Chance of rain 30%.

  • Wednesday Night

    Mostly cloudy. Fog overnight. Low of 41F. Winds from the SSW at 5 to 10 mph.

  • Thursday

    Partly cloudy. High of 48F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 41F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 2:44 AM CST

Temperature: 43.9 °F Dew Point: 43 °F Humidity: 95% Wind: WNW at 3.2 mph Pressure: 29.18 in Hourly Precipitation: - Windchill: 43 °F Graphs

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

Updated: 2:53 AM CST

Temperature: 42.9 °F Dew Point: 42 °F Humidity: 95% Wind: NNW at 4.0 mph Pressure: 29.31 in Hourly Precipitation: 0.03 in Windchill: 41 °F Graphs

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

Updated: 2:52 AM CST

Temperature: 45.0 °F Dew Point: 42 °F Humidity: 91% Wind: North at 17.0 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 2:53 AM CST

Temperature: 45.7 °F Dew Point: 42 °F Humidity: 87% Wind: Calm Pressure: 29.26 in Hourly Precipitation: 0.01 in Windchill: 46 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 2:53 AM CST

Temperature: 44.8 °F Dew Point: 43 °F Humidity: 94% Wind: Calm Pressure: 29.33 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 2:53 AM CST

Temperature: 44.1 °F Dew Point: 41 °F Humidity: 90% Wind: NE at 2.1 mph Pressure: 29.30 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 2:53 AM CST

Temperature: 43.5 °F Dew Point: 41 °F Humidity: 90% Wind: North at 12.0 mph Pressure: 29.31 in Hourly Precipitation: 0.01 in Windchill: 37 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 2:53 AM CST

Temperature: 43.7 °F Dew Point: 43 °F Humidity: 98% Wind: WNW at 3.2 mph Pressure: 28.76 in Hourly Precipitation: 0.01 in Windchill: 42 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 2:53 AM CST

Temperature: 46.2 °F Dew Point: 43 °F Humidity: 89% Wind: SSW at 3.0 mph Pressure: 29.15 in Hourly Precipitation: 0.03 in Windchill: 46 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 2:53 AM CST

Temperature: 44.1 °F Dew Point: 42 °F Humidity: 93% Wind: WNW at 12.0 mph Pressure: 29.30 in Hourly Precipitation: 0.03 in Windchill: 38 °F Graphs

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

Updated: 2:47 AM CST

Temperature: 44.1 °F Dew Point: 41 °F Humidity: 88% Wind: WNW at 10.0 mph Pressure: 29.28 in Hourly Precipitation: 0.02 in Windchill: 39 °F Graphs

Location: CommuniTree Gardens Nursery, St. Louis, MO

Updated: 2:48 AM CST

Temperature: 43.9 °F Dew Point: 41 °F Humidity: 90% Wind: WSW at 8.1 mph Pressure: 28.82 in Hourly Precipitation: 0.02 in Windchill: 39 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 2:52 AM CST

Temperature: 41.7 °F Dew Point: 40 °F Humidity: 92% Wind: North at 9.0 mph Pressure: 29.33 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Parkridge, Brentwood, MO

Updated: 2:52 AM CST

Temperature: 45.5 °F Dew Point: - Humidity: - Wind: West at 2.2 mph Pressure: 29.26 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 2:53 AM CST

Temperature: 42.6 °F Dew Point: 40 °F Humidity: 90% Wind: NW at 1.1 mph Pressure: 29.26 in Hourly Precipitation: 0.04 in Windchill: 43 °F Graphs

Location: Jost Farm, Florissant, MO

Updated: 2:50 AM CST

Temperature: 43.3 °F Dew Point: 37 °F Humidity: 78% Wind: NW at 11.4 mph Pressure: 29.25 in Hourly Precipitation: 0.02 in Windchill: 37 °F Graphs

Location: www.seedgeeks.com, Brentwood, MO

Updated: 2:39 AM CST

Temperature: 45.3 °F Dew Point: 43 °F Humidity: 93% Wind: SSE at 3.2 mph Pressure: 29.22 in Hourly Precipitation: - Windchill: 44 °F Graphs

Location: Stable Ridge Estates, Saint Charles, MO

Updated: 2:51 AM CST

Temperature: 42.6 °F Dew Point: 38 °F Humidity: 84% Wind: Calm Pressure: 28.97 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Franz Park, St. Louis, MO

Updated: 2:50 AM CST

Temperature: 47.3 °F Dew Point: 47 °F Humidity: 98% Wind: North at - Pressure: 29.20 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 2:45 AM CST

Temperature: 44.6 °F Dew Point: 40 °F Humidity: 83% Wind: WNW at 3.0 mph Pressure: 29.39 in Hourly Precipitation: 0.02 in Windchill: 45 °F Graphs

Location: Webster Groves, Webster Groves, MO

Updated: 2:50 AM CST

Temperature: 44.7 °F Dew Point: 44 °F Humidity: 97% Wind: West at 8.0 mph Pressure: 29.29 in Hourly Precipitation: 0.04 in Windchill: 40 °F Graphs

Location: Essex and Geyer, St. Louis, MO

Updated: 2:41 AM CST

Temperature: 44.6 °F Dew Point: 42 °F Humidity: 92% Wind: NE at 3.2 mph Pressure: 29.08 in Hourly Precipitation: - Windchill: 43 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 2:53 AM CST

Temperature: 43.7 °F Dew Point: 40 °F Humidity: 87% Wind: West at 19.6 mph Pressure: 29.33 in Hourly Precipitation: 0.06 in Windchill: 35 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 2:47 AM CST

Temperature: 43.0 °F Dew Point: 40 °F Humidity: 89% Wind: WNW at 5.0 mph Pressure: 29.30 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: East Madison, Kirkwood, MO, Kirkwood, MO

Updated: 2:53 AM CST

Temperature: 44.1 °F Dew Point: 41 °F Humidity: 90% Wind: WSW at 12.1 mph Pressure: 29.32 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Crest Ave. Kirkwood MO, St. Louis, MO

Updated: 2:42 AM CST

Temperature: 45.3 °F Dew Point: 43 °F Humidity: 92% Wind: West at 5.8 mph Pressure: 29.29 in Hourly Precipitation: - Windchill: 42 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 2:53 AM CST

Temperature: 42.2 °F Dew Point: 40 °F Humidity: 90% Wind: WSW at 6.0 mph Pressure: 29.34 in Hourly Precipitation: 0.03 in Windchill: 38 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 2:53 AM CST

Temperature: 42.6 °F Dew Point: 40 °F Humidity: 92% Wind: WNW at 7.0 mph Pressure: 29.31 in Hourly Precipitation: 0.04 in Windchill: 38 °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 
1131 PM CST sun Nov 23 2014 


Update: 
issued at 938 PM CST sun Nov 23 2014 


Updated the pops for the overnight. Sped up the timing slightly and 
increased coverage to the south over the next several hrs to account 
for the precip lifting out of SW MO. Limited thunder potential for a 
just a few hrs this evng across the ern Ozarks. Timing on the front 
still looks good with winds increasing significantly after frontal passage. Not 
sold on accumulating snow late tonight into early tomorrow morning due 
to lack of cold enough air being advected into the area to cool the 
bndry layer enough to switch over to all snow...let alone cold enough 
for accums. Think that by the time cold enough air makes it into the 
area the precip will be moving out. Plus...2 inch soil temps are in 
the 40s across NE MO and west cntrl Illinois. Have not pulled the accums but 
wouldn't be surprised if there wasn't any either. 


2% 


&& 


Short term: (through monday) 
issued at 346 PM CST sun Nov 23 2014 


Main concern for tonight will be will there be any snow accumulation 
over northwestern parts of the area as rain changes to snow behind a 
sharp cold front. Most of the County Warning Area has seen rain today and the 
current band which is being forced by strong moisture convergence 
and strong ascent ahead of ejecting shortwave trough will move 
northeast of the County Warning Area this evening. This will cause a lull in the 
precipitation this evening before a second area currently over the 
plains moves into the area later this evening and overnight. This 
area is being frontogenetically forced ahead of a second trough 
currently over the northern plains. Attendant cold front that 
currently extends across central Iowa into far northwest Missouri 
into eastern Kansas will push eastward this evening, reaching St. 
Louis by midnight and east of the County Warning Area by 3 am. Forecast soundings 
suggest that the rain will mix with and then changeover to snow 
after midnight before the frontogenetical band lifts out between 
midnight and 6 am. Current indications are that snowfall amounts 
will be less than 1 inch along and north of a Shelbina to Quincy 
line given the relatively warm soil temperatures (novelty Missouri 
mesonet 2 inch soil temperature is currently 50 degrees) and the 
relative short amount of time that the accumulating snow will 
fall. It will be windy late tonight into tomorrow as decent 
gradient winds set up behind the cold front. However it does not 
appear that we will hit advisory criteria at this time. 


Do not expect much clearing tomorrow as forecast soundings show some 
minimal cape in the lowest levels tomorrow afternoon suggesting some 
isolated snow or rain showers will develop in the low level cyclonic 
flow. Highs tomorrow are only a few degrees warmer than lows tonight. 


Britt 


Long term: (monday night through next sunday) 
issued at 346 PM CST sun Nov 23 2014 


(monday night through wednesday) 


Next notable trough that will move through the area will be on 
Wednesday which the European model (ecmwf) and GFS both show light quantitative precipitation forecast across the 
County Warning Area. Have increased pops a bit across the area, with the highest 
amounts over the northern County Warning Area where current track of the surface 
low will be. Temperatures will stay below normal during the period. 


(Thursday through next sunday) 


Overall confidence in forecast during this period is not high as the 
both operational GFS and European model (ecmwf) and their ensembles have had continuity 
issues the past few days with the timing and strength of the troughs 
that will move across the area later this week. Latest runs are showing 
quasi-zonal flow during the period with shortwave troughs moving quickly 
across the area. While the GFS is developing some quantitative precipitation forecast over the region 
on Saturday, this is different than yesterday's run, so will discount 
for now. Will go dry during this period given the inherent difficulties 
in timing precipitation in zonal flow. 


Britt 


&& 


Aviation: (for the 06z tafs through 06z Monday night) 
issued at 1111 PM CST sun Nov 23 2014 


A cold front had already moved through kcou and KUIN but had not 
yet reached the St. Louis Metro area taf sites as of 05z. Expect a 
marked wind shift at ksus/kcps when fropa occurs between 06-08z. 
An area of rain was also moving northeastwards towards the taf 
sites and had already reached kcou at taf issuance. Rain will 
persist for several more hours then taper off. The rain could 
briefly mix with snow at kcou and KUIN just as the precipitation 
is ending, but upstream metars show that the Post-frontal air 
mass is warmer than previously anticipated, thus accumulating 
snowfall looks less likely than it did during the previous taf 
cycle. Instability snow showers are possible during the afternoon. 
Winds should start to taper off once the pressure gradient relaxes 
by the late afternoon or early evening. 


Specifics for kstl: expect a marked wind shift between 06-07z when 
a cold front moves through the terminal. Rain will persist for 
several more hours then taper off. Instability snow showers are 
possible during the afternoon. This taf is optimistic in that it 
depicts a return to VFR cigs by late afternoon/early evening. 


Kanofsky 


&& 


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


$$ 


Weather forecast office lsx 



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