Saint Ann, Missouri Weather Conditions

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Current Conditions

  • 73°
  • Overcast
  • Wind: SSE 17 mph
  • Humidity: 26%
  • Visibility: 10.0 miles
  • Dew Point: 36°
  • Pressure: 29.87 in. -

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Next 12 Hours

8  pm
11  pm
2  am
5  am
8  am
Mostly Cloudy
Mostly Cloudy
Overcast
Overcast
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
66°
63°
61°
61°
63°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Thunderstorm
  • High: 73 °
  • Low: 55 °
  • T-Storms
  • Friday
  • Rain
  • High: 55 °
  • Low: 35 °
  • Rain
  • Saturday
  • Clear
  • High: 63 °
  • Low: 45 °
  • Clear
  • Sunday
  • Clear
  • High: 69 °
  • Low: 51 °
  • Clear
  • Monday
  • Chance of a Thunderstorm
  • High: 68 °
  • Low: 62 °
  • Chance of T-Storms

Forecast for Saint Ann, Missouri

Updated: 4:16 PM CDT on January 01, 2015

  • Wednesday

    Late night thunderstorms. Lows overnight in the low 60s.

  • Wednesday Night

    Cloudy this evening. Scattered thunderstorms developing after midnight. Low near 60F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Thursday

    Thunderstorms likely. A few storms may be severe. High 73F. Winds SW at 10 to 20 mph. Chance of rain 80%.

  • Thursday Night

    A steady rain in the evening. Showers continuing late. Thunder possible. Low around 55F. Winds NE at 5 to 10 mph. Chance of rain 90%.

  • Friday

    A steady rain in the morning. Showers continuing in the afternoon. High around 55F. Winds N at 15 to 25 mph. Chance of rain 90%. Rainfall around a quarter of an inch.

  • Friday Night

    Some clouds early will give way to generally clear conditions overnight. Low around 35F. Winds NW at 10 to 20 mph.

  • Saturday

    Sunny skies. High 63F. Winds WSW at 5 to 10 mph.

  • Saturday Night

    Clear skies. Low around 45F. Winds S at 5 to 10 mph.

  • Sunday

    Generally sunny. High 69F. Winds SSW at 10 to 20 mph.

  • Sunday Night

    Partly cloudy. Low 51F. Winds S at 10 to 15 mph.

  • Monday

    Cloudy skies during the morning hours followed by scattered showers and thunderstorms in the afternoon. High 68F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Monday Night

    Thunderstorms likely in the evening. Then the chance of scattered thunderstorms later on. Low 62F. Winds S at 10 to 20 mph. Chance of rain 80%.

  • Tuesday

    Partly cloudy skies. High 73F. Winds SSW at 10 to 20 mph.

  • Tuesday Night

    Partly cloudy. Low 52F. Winds SW at 10 to 20 mph.

  • Wednesday

    Scattered thunderstorms. High near 65F. Winds NE at 10 to 15 mph. Chance of rain 50%.

  • Wednesday Night

    Thunderstorms during the evening giving way to periods of light rain overnight. Low 49F. Winds ESE at 10 to 15 mph. Chance of rain 80%.

  • Thursday

    Showers early becoming less numerous later in the day. High 62F. Winds ENE at 5 to 10 mph. Chance of rain 60%.

  • Thursday Night

    Considerable cloudiness. Low near 50F. Winds NNE at 5 to 10 mph.

  • Friday

    Cloudy. High 63F. Winds NNW at 10 to 15 mph.

  • Friday Night

    A few clouds from time to time. Low 47F. Winds NNE at 5 to 10 mph.

  • Saturday

    Partly cloudy skies. High 68F. Winds NE at 5 to 10 mph.

  • Saturday Night

    Partly cloudy skies. Low 48F. Winds ESE at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 6:51 PM CDT

Temperature: 72.0 °F Dew Point: 41 °F Humidity: 33% Wind: West at 5.3 mph Pressure: 29.79 in Hourly Precipitation: - Heat Index: 77 °F Graphs

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

Updated: 7:06 PM CDT

Temperature: 71.2 °F Dew Point: 46 °F Humidity: 41% Wind: ESE at 10.0 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 6:58 PM CDT

Temperature: 72.0 °F Dew Point: 41 °F Humidity: 33% Wind: ESE at 6.0 mph Pressure: 29.20 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 7:02 PM CDT

Temperature: 71.8 °F Dew Point: 40 °F Humidity: 31% Wind: SSE at 2.0 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Earth City, Earth City, MO

Updated: 7:55 PM EDT

Temperature: 72.5 °F Dew Point: 41 °F Humidity: 32% Wind: ESE at 9.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 7:06 PM CDT

Temperature: 71.7 °F Dew Point: 41 °F Humidity: 33% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: APRSWXNET, Saint Louis, MO

Updated: 6:38 PM CDT

Temperature: 72 °F Dew Point: 41 °F Humidity: 33% Wind: South at 2 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Honeygrove Court, Saint Louis, MO

Updated: 7:05 PM CDT

Temperature: 72.5 °F Dew Point: 40 °F Humidity: 31% Wind: North at - Pressure: 29.88 in Hourly Precipitation: - Heat Index: 76 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 7:06 PM CDT

Temperature: 70.3 °F Dew Point: 37 °F Humidity: 30% Wind: South at 2.3 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 7:06 PM CDT

Temperature: 72.4 °F Dew Point: 42 °F Humidity: 33% Wind: ESE at 9.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 7:06 PM CDT

Temperature: 72.0 °F Dew Point: 45 °F Humidity: 38% Wind: SSE at 3.2 mph Pressure: 29.32 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 7:06 PM CDT

Temperature: 70.3 °F Dew Point: 41 °F Humidity: 35% Wind: SE at 3.0 mph Pressure: 29.72 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Riverwood Place, Florissant, MO

Updated: 7:06 PM CDT

Temperature: 71.8 °F Dew Point: 42 °F Humidity: 34% Wind: SW at 3.0 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Creve Coeur, Saint Louis, MO

Updated: 7:06 PM CDT

Temperature: 72.0 °F Dew Point: 40 °F Humidity: 31% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Ladue, St. Louis, MO

Updated: 6:50 PM CDT

Temperature: 75.7 °F Dew Point: - Humidity: 24% Wind: North at - Pressure: 29.25 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: CommuniTree Gardens Nursery, St. Louis, MO

Updated: 7:05 PM CDT

Temperature: 71.8 °F Dew Point: 42 °F Humidity: 34% Wind: SE at 2.0 mph Pressure: 29.37 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 7:06 PM CDT

Temperature: 69.2 °F Dew Point: 42 °F Humidity: 38% Wind: SSE at 4.0 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Parkridge, Brentwood, MO

Updated: 7:06 PM CDT

Temperature: 72.1 °F Dew Point: - Humidity: - Wind: SE at 4.5 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Talbridge, St. Charles, MO

Updated: 7:06 PM CDT

Temperature: 71.2 °F Dew Point: 41 °F Humidity: 34% Wind: NW at 1.1 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 7:05 PM CDT

Temperature: 71.6 °F Dew Point: 40 °F Humidity: 32% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Ballas Courts, Saint Louis, MO

Updated: 7:06 PM CDT

Temperature: 71.2 °F Dew Point: 38 °F Humidity: 30% Wind: SE at 5.1 mph Pressure: 29.42 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Jost Farm, Florissant, MO

Updated: 7:05 PM CDT

Temperature: 72.5 °F Dew Point: 40 °F Humidity: 31% Wind: SE at 9.8 mph Pressure: 29.42 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Raritan Drive, Webster Groves, MO

Updated: 7:06 PM CDT

Temperature: 72.3 °F Dew Point: 44 °F Humidity: 36% Wind: North at - Pressure: 29.94 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Fawnridge Drive, Saint Louis, MO

Updated: 7:05 PM CDT

Temperature: 71.2 °F Dew Point: 44 °F Humidity: 37% Wind: North at - Pressure: 29.98 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: www.seedgeeks.com, Brentwood, MO

Updated: 7:01 PM CDT

Temperature: 72.0 °F Dew Point: 45 °F Humidity: 38% Wind: SSE at 4.7 mph Pressure: 29.83 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Franz Park, St. Louis, MO

Updated: 7:05 PM CDT

Temperature: 71.6 °F Dew Point: 46 °F Humidity: 40% Wind: North at - Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Forest Park, St. Louis, MO

Updated: 6:50 PM CDT

Temperature: 74.5 °F Dew Point: - Humidity: 23% Wind: North at - Pressure: 29.31 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Huntington Downs, Saint Charles, MO

Updated: 7:05 PM CDT

Temperature: 71.8 °F Dew Point: 43 °F Humidity: 35% Wind: North at - Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: ACW Alliance at BJC Washington University Campus, Saint Louis, MO

Updated: 7:06 PM CDT

Temperature: 71.6 °F Dew Point: 39 °F Humidity: 31% Wind: NNW at 4.7 mph Pressure: 29.20 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 7:01 PM CDT

Temperature: 71.4 °F Dew Point: 27 °F Humidity: 19% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

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

Updated: 7:05 PM CDT

Temperature: 72.5 °F Dew Point: 42 °F Humidity: 33% Wind: NNE at 2.2 mph Pressure: 29.62 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Webster Groves, Webster Groves, MO

Updated: 7:05 PM CDT

Temperature: 70.7 °F Dew Point: 9 °F Humidity: 9% Wind: SSE at 6.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 72 °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 
703 PM CDT Wed Apr 1 2015 


Short term: (through late tonight) 
issued at 345 PM CDT Wed Apr 1 2015 


Mesoscale convective vortex moving into southwest Missouri is producing an area of rain with 
embedded thunderstorms. This activity is moving northeast and 
should enter the County warning forecast area around 21z. Have therefore raised pops to 
likely for parts of central Missouri. Not sure how far 
north/northeast the rain is going to get though as some fairly dry 
mid-level air as shown by amdar soundings from kstl this afternoon. 
However, the 850mb flow will be turning to the southwest and the 
atmosphere will be moistening up...so pops may not be high enough 
over some parts of the area this evening. 


Attention turns to the cold front over the plains and what will be 
forming out there tonight. Guidance suggests that the storms will 
form over Nebraska this evening and move southeast overnight. 
Current thinking is that the leading edge of the precipitation will 
enter the northern portion of the County warning forecast area between 09z and 12z. Storms 
should be on the downward trend at that point, but with MUCAPE still 
potentially at or above 1000 j/kg, and around 40kts of deep layer 
shear, strong storms remain a possibility across northeast Missouri 
and west central Illinois before sunrise Thursday. 


Carney 


Long term: (thursday through next wednesday) 
issued at 345 PM CDT Wed Apr 1 2015 


Active cold front to move through region on Thursday. Will see 
initial activity that forms ahead of front slide southeast and 
diminish by 15z. Then a bit of a break before more intense round 
develops during the afternoon hours. Will see mu CAPES approach 1500 
j/kg, mainly along and south of i70 and precipitable water values around 1.3". 
Despite the cloud cover from the morning activity, any breaks in the 
cloud cover will help to destabilize the atmosphere even more. Some 
of the storms could be strong to severe with the main threats being 
large hail and damaging winds. As for high temps, they will range 
from the upper 60s far north to the low to mid 70s south. 


Front to stall out over southern portions of forecast area Thursday 
night and will see several waves of precipitation through Friday, 
with best chances along and south of I-70. Lows Thursday night will 
be in the mid 40s to upper 50s. Then colder air to filter in on 
Friday as system slowly sinks south away from region. Will see non 
diurnal temps, either steady or slowly falling. Highs will only be 
in the low 50s far north to the low 60s far south. 


Then dry weather expected for the weekend as surface ridge builds 
in, with temperatures slowly moderating. Highs on Saturday will be 
in the mid 50s to low 60s then warm up into the mid 60s everywhere 
on Sunday. 


(Sunday night through wednesday) 


Beyond that, active pattern begins with systems sliding northeast 
towards forecast area through mid week next week. Extended models 
have differences in timing with these systems, so just kept chance 
pops through the period. Showers and thunderstorms to move in Sunday 
night and continue off and on through next Wednesday. Highs will be 
in the 60s and 70s through this period. 


Byrd 


&& 


Aviation: (for the 00z tafs through 00z Thursday evening) 
issued at 558 PM CDT Wed Apr 1 2015 


Showers and a few thunderstorms ahead of an upper level disturbance 
will continue in cou early this evening and eventually move into 
the St Louis Metro by late evening, although the activity should 
begin to weaken by this time as it encounters drier air. Another 
round of convection can be expected Thursday morning ahead of a 
cold front which will be dropping southeastward into northwestern 
MO. This activity should be gradually weakening during the morning 
hours. A strong swly low level jet will lead to low level wind shear tonight with 
S-swly winds of 40-45 kts around 1500-2000 feet in height. A third 
round of convection, possibly severe is expected mainly during the 
late afternoon and early evening in cou and the St Louis Metro 
area along the cold front as it continues to move slowly southeastward. 
The surface wind will veer around to a N-nwly direction Thursday 
afternoon or evening after fropa. 


Specifics for kstl: an area of showers and a few storms will move 
into stl later this evening as it slowly weakens. Strong winds of 
45 kts at 1500-2000 feet in height later this evening and 
overnight will lead to low level wind shear conditions. Another round of showers 
and storms can be expected Thursday morning as a weakening line of 
convection drops southeastward into the area ahead of an 
approaching cold front. A third round of stronger convection is 
forecast late Thursday afternoon into the evening along the cold 
front. This convection should weaken later Thursday evening with 
lingering showers, while the surface wind veers around to a nly 
direction after fropa. 


Gks 


&& 


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


$$ 


Weather forecast office lsx 



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