Saint Ann, Missouri Weather Conditions

Your Weather

To update your location please enter your ZIP code, city, state, airport code or country in the field below. Weather by E-mail: Forecast storm alerts. Weather E-Mail Alert Sign Up »

Current Conditions

  • 69°
  • Mostly Cloudy
  • Wind: South 4 mph
  • Humidity: 68%
  • Visibility: 10.0 miles
  • Dew Point: 58°
  • Pressure: 30.06 in. +

Select a Section

Click a section below for more information.

Next 12 Hours

10  am
1  pm
4  pm
7  pm
10  pm
Overcast
Overcast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
75°
82°
84°
84°
77°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Partly Cloudy
  • High: 84 °
  • Low: 75 °
  • Partly Cloudy
  • Saturday
  • Chance of a Thunderstorm
  • High: 93 °
  • Low: 77 °
  • Chance of T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 68 °
  • Chance of T-Storms
  • Monday
  • Partly Cloudy
  • High: 81 °
  • Low: 63 °
  • Partly Cloudy
  • Tuesday
  • Mostly Cloudy
  • High: 81 °
  • Low: 61 °
  • Mostly Cloudy

Forecast for Saint Ann, Missouri

Updated: 4:00 AM CDT on July 25, 2014

  • Friday

    Overcast in the morning, then partly cloudy. High of 84F. Winds from the SSE at 5 to 15 mph.

  • Friday Night

    Partly cloudy in the evening, then overcast. Low of 75F. Winds from the South at 5 to 15 mph.

  • Saturday

    Overcast with a chance of a thunderstorm and a chance of rain. High of 93F with a heat index of 100F. Winds from the SW at 10 to 15 mph. Chance of rain 30%.

  • Saturday Night

    Overcast with a chance of a thunderstorm and a chance of rain. Low of 77F. Winds from the SW at 5 to 10 mph. Chance of rain 40% with rainfall amounts near 0.2 in. possible.

  • Sunday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 91F. Winds from the WNW at 10 to 15 mph. Chance of rain 30%.

  • Sunday Night

    Partly cloudy. Low of 68F. Winds from the NW at 5 to 15 mph.

  • Monday

    Partly cloudy. High of 81F. Winds from the NW at 10 to 15 mph.

  • Monday Night

    Partly cloudy. Low of 63F. Winds from the North at 5 to 10 mph.

  • Tuesday

    Partly cloudy in the morning, then overcast. High of 81F. Winds from the North at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy. Low of 61F. Winds less than 5 mph.

  • Wednesday

    Partly cloudy. High of 82F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 61F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 84F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm. Low of 61F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

    Clear with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

    Clear with a chance of a thunderstorm. Low of 61F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Partly cloudy with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 61F. Winds less than 5 mph. Chance of rain 50%.

  • Sunday

    Partly cloudy with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 63F. Winds less than 5 mph. Chance of rain 40%.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 40%.

  • Monday Night

    Clear. Fog overnight. Low of 63F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 8:37 AM CDT

Temperature: 71.4 °F Dew Point: 61 °F Humidity: 70% Wind: Calm Pressure: 29.99 in Hourly Precipitation: - Heat Index: 74 °F Graphs

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

Updated: 8:40 AM CDT

Temperature: 69.0 °F Dew Point: 61 °F Humidity: 76% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 8:16 AM CDT

Temperature: 67.7 °F Dew Point: 59 °F Humidity: 74% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.01 in Heat Index: - Graphs

Location: Maryland Heights, MO

Updated: 8:37 AM CDT

Temperature: 69.5 °F Dew Point: 62 °F Humidity: 76% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 7:51 AM CDT

Temperature: 64.5 °F Dew Point: 59 °F Humidity: 82% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: APRSWXNET Ladue MO US, Saint Louis, MO

Updated: 7:37 AM CDT

Temperature: 64 °F Dew Point: 60 °F Humidity: 87% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 8:39 AM CDT

Temperature: 68.9 °F Dew Point: 61 °F Humidity: 75% Wind: ESE at 1.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 8:39 AM CDT

Temperature: 72.0 °F Dew Point: 60 °F Humidity: 67% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 8:40 AM CDT

Temperature: 68.9 °F Dew Point: 62 °F Humidity: 78% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Riverwood Place, Florissant, MO

Updated: 8:39 AM CDT

Temperature: 71.0 °F Dew Point: 62 °F Humidity: 73% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

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

Updated: 8:36 AM CDT

Temperature: 68.6 °F Dew Point: 60 °F Humidity: 73% Wind: South at 2.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 8:35 AM CDT

Temperature: 70.2 °F Dew Point: 63 °F Humidity: 77% Wind: South at 1.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 8:35 AM CDT

Temperature: 68.6 °F Dew Point: 61 °F Humidity: 78% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 8:38 AM CDT

Temperature: 69.0 °F Dew Point: 62 °F Humidity: 79% Wind: SSW at 1.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Parkridge, Brentwood, MO

Updated: 8:39 AM CDT

Temperature: 70.0 °F Dew Point: - Humidity: - Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lindenwood, St. Charles, MO

Updated: 8:39 AM CDT

Temperature: 67.8 °F Dew Point: 61 °F Humidity: 80% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Jost Farm, Florissant, MO

Updated: 8:40 AM CDT

Temperature: 72.9 °F Dew Point: 58 °F Humidity: 60% Wind: NE at 2.2 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: www.seedgeeks.com, Brentwood, MO

Updated: 8:25 AM CDT

Temperature: 70.7 °F Dew Point: 62 °F Humidity: 73% Wind: SSW at 1.7 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: 73 °F Graphs

Location: Fox Hill, Saint Charles, MO

Updated: 8:39 AM CDT

Temperature: 70.7 °F Dew Point: 55 °F Humidity: 57% Wind: Calm Pressure: 29.47 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Danielle Downs, St. Peters, MO

Updated: 8:39 AM CDT

Temperature: 72.1 °F Dew Point: 63 °F Humidity: 74% Wind: SW at 1.6 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 8:32 AM CDT

Temperature: 68.7 °F Dew Point: 52 °F Humidity: 56% Wind: South at 2.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lindenwood Park, St Louis, MO

Updated: 8:39 AM CDT

Temperature: 69.1 °F Dew Point: 60 °F Humidity: 74% Wind: SSW at 1.4 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Essex and Geyer, St. Louis, MO

Updated: 8:34 AM CDT

Temperature: 71.4 °F Dew Point: 59 °F Humidity: 64% Wind: Calm Pressure: 29.88 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 8:39 AM CDT

Temperature: 69.5 °F Dew Point: 60 °F Humidity: 72% Wind: SW at 3.5 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Harvester, St. Charles, MO

Updated: 8:36 AM CDT

Temperature: 69.6 °F Dew Point: 61 °F Humidity: 75% Wind: SE at 2.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:39 AM CDT

Temperature: 69.1 °F Dew Point: 60 °F Humidity: 73% Wind: South at 2.9 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 8:33 AM CDT

Temperature: 71.6 °F Dew Point: 62 °F Humidity: 71% Wind: Calm Pressure: 30.05 in Hourly Precipitation: - Heat Index: 74 °F Graphs

Location: West Drive, St. Peters, MO

Updated: 8:39 AM CDT

Temperature: 67.9 °F Dew Point: 62 °F Humidity: 78% Wind: ENE at 2.0 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Shaw/Tower Grove, St. Louis, MO

Updated: 8:39 AM CDT

Temperature: 70.9 °F Dew Point: 57 °F Humidity: 62% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Big Bend and I-270, Kirkwood, MO

Updated: 8:35 AM CDT

Temperature: 69.0 °F Dew Point: 61 °F Humidity: 75% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - 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 
533 am CDT Fri Jul 25 2014 


Short term: (through late this afternoon) 
issued at 330 am CDT Fri Jul 25 2014 


Convective trends and the extent of pops are the biggest forecast 
challenge today. Thunderstorms have blossomed within the last 
several hours across central Iowa at the terminus of a Stout 
southwesterly llj, and along the eastern periphery of elevated 
instability, deeper moisture and steep mid level lapse rates. 
Short range guidance shows the low level jet slowly veering this morning, 
providing favorable moisture transport and forcing as the flow 
aloft and northwestely deep layer shear steer the activity east 
and southeastward. The hrrr runs since 01z have been very emphatic 
supporting this scenario bringing showers and thunderstorms into 
northeast Missouri and west central Illinois. I have increased 
pops into the likely range in this area tapered to slight chances 
just north of Interstate 70. Believe that most of this activity 
will be east of the MS river by early afternoon and exiting the 
County Warning Area shortly thereafter. This activity will likely delay/impeed the 
northward retreat of the warm front, however in central MO there 
should be no issue where highs will be around 90. 


Glass 


Long term: (tonight through thursday) 
issued at 330 am CDT Fri Jul 25 2014 


The warm front should have exited the entire County Warning Area by early evening 
while the upstream cold frontal system will be slowly advancing 
and stretching from the upper MS valley into the Central Plains. 
High heights aloft and warm mid level temperatures should suppress 
any surface-based storm development within the large warm sector 
spanning the cwa, however the area will remain subject to an 
elevated shower and thunderstorm threat. While there is no defined 
focus for thunderstorms, a westerly low level jet will be poised across the 
area in conjunction with steep mid level lapse rates and good 
elevated instability supporting a least a chance pop. These same 
unfocused conditions will exist on Saturday morning. The set-up 
should improve on Saturday afternoon. Strong surface heating 
should yield temperatures well into the 90s with dew points in the 
70s. This will result in afternoon heat indices in the 100-104 degree 
range, just below advisory criteria. We will need to monitor this 
closely as just a bit higher dew points and/or temperatures and a 
heat advisory will be warranted. The aforementioned conditions along 
with the presence of steep mid level lapse rates will yield very 
unstable conditions during the afternoon/evening. There are 
indications that the combo of heating and a disturbance in the 
west northwest flow aloft should sufficiently weaken the cap 
allowing for robust thunderstorm development along the west-east 
oriented front stretching in the vicinity of far northern MO 
through central Illinois into the Ohio Valley. How far west development 
occurs is uncertain but height falls/cooling aloft on Saturday 
night could aid this process. Deep layer shear and instability is 
quite favorable for organized severe with damaging winds the most 
apparent severe threat at this time. I have some low pops on 
Sunday ahead of the advancing front, but the overall threat of 
precipitation will be lower as compared to the Saturday night. 
Cooler and drier air will advect in earnest into the area on Sunday 
night with a large surface high settling into the nation's 
midsection on Monday. An unseasonably deep upper trof over eastern 
noam through the first part of next week will keep the large 
surface high in control and allow for another period of below 
average temperatures as we exit July and head into August. 


Glass 


&& 


Aviation: (for the 12z tafs through 12z Saturday morning) 
issued at 519 am CDT Fri Jul 25 2014 


Cluster of thunderstorms over southeastern Iowa will continue 
tracking southeastward and will arrive at the KUIN taf site by 
around 12z. Visibilities may fall to high end of MVFR range as the 
storms pass, but cigs will likely remain at or above 6k feet. Storms will 
move into more stable atmosphere as they approach the St. Louis 
Metro taf sites, and most model output suggests little or no 
precip there. With that in mind, will keep all St. Louis area tafs 
dry. South winds will increase this afternoon. 


Specifics for kstl: thunderstorms approaching from the northwest 
should dissipate before moving into kstl taf site as they move 
into more stable air. High clouds will remain through 
at least midday...with south winds increasing to 10 to 14 mph by 
afternoon. 


Browning 


&& 


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


$$ 


Weather forecast office lsx 



National Weather Service Glossary of Abbreviations

Non-Expanded Version (with abbreviations)

Powered by the Weather Underground, Inc.