Troy, Missouri Weather Conditions

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Excessive Heat Warning View All Alerts

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Current Conditions

  • 95°
  • Partly Cloudy
  • Wind: Calm
  • Humidity: 59%
  • Visibility: 10.0 miles
  • Dew Point: 79°
  • Pressure: 29.89 in. -
  • Heat Index: 112

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Next 12 Hours

6  pm
9  pm
12  am
3  am
6  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
Clear
Clear
95°
85°
81°
79°
78°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Partly Cloudy
  • High: 95 °
  • Low: 77 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 88 °
  • Low: 64 °
  • Partly Cloudy
  • Thursday
  • Clear
  • High: 89 °
  • Low: 65 °
  • Clear
  • Friday
  • Clear
  • High: 89 °
  • Low: 66 °
  • Clear
  • Saturday
  • Clear
  • High: 89 °
  • Low: 66 °
  • Clear

Forecast for Troy, Missouri

Updated: 1:52 PM CDT on January 28, 2015

Excessive heat warning in effect until 9 PM CDT this evening...
  • Tuesday

    Sunshine and clouds mixed. A stray shower or thunderstorm is possible. High around 95F. Winds light and variable.

  • Tuesday Night

    Partial cloudiness early, with scattered showers and thunderstorms overnight. Low 77F. Winds light and variable. Chance of rain 50%.

  • Wednesday

    Partly cloudy skies. A stray shower or thunderstorm is possible. High 88F. Winds NNW at 5 to 10 mph.

  • Wednesday Night

    Mainly clear. Low 64F. Winds NNW at 5 to 10 mph.

  • Thursday

    Generally sunny despite a few afternoon clouds. High 89F. Winds light and variable.

  • Thursday Night

    Some clouds early will give way to generally clear conditions overnight. Low around 65F. Winds light and variable.

  • Friday

    Sunny. High 89F. Winds NW at 5 to 10 mph.

  • Friday Night

    Clear skies. Low 66F. Winds light and variable.

  • Saturday

    Sunny. High 89F. Winds light and variable.

  • Saturday Night

    A few clouds overnight. Low 66F. Winds light and variable.

  • Sunday

    Mostly sunny skies. High 89F. Winds SW at 5 to 10 mph.

  • Sunday Night

    A few clouds overnight. Low 68F. Winds light and variable.

  • Monday

    Mostly sunny skies. High around 90F. Winds SW at 5 to 10 mph.

  • Monday Night

    Mostly clear skies. Low 68F. Winds light and variable.

  • Tuesday

    Intervals of clouds and sunshine. High 87F. Winds SE at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy skies. Low 67F. Winds light and variable.

  • Wednesday

    Partly cloudy. High 88F. Winds S at 5 to 10 mph.

  • Wednesday Night

    Partly cloudy. Low 68F. Winds light and variable.

  • Thursday

    Partly cloudy. High around 85F. Winds SSE at 5 to 10 mph.

  • Thursday Night

    Scattered thunderstorms in the evening, then variable clouds overnight with more showers at times. Low 66F. Winds E at 5 to 10 mph. Chance of rain 40%.

  • Friday

    Rain showers early with isolated thunderstorms developing later in the day. High 83F. Winds SE at 5 to 10 mph. Chance of rain 40%.

  • Friday Night

    Variable clouds with showers at times, and perhaps a rumble or two of thunder, especially early. Low near 65F. Winds ENE at 5 to 10 mph. Chance of rain 40%.

Severe Weather Alert Descriptions

 Excessive Heat Warning  Statement as of 3:52 PM CDT on July 28, 2015


... Excessive heat warning remains in effect until 9 PM CDT this
evening...

* timing... dangerous heat index values will continue during the
early evening hours tonight.

* Heat index values... up to 117 due to temperatures in the lower
90s... and dewpoints in the upper 70s.

* Impacts... the combination of hot temperatures and high
humidity will likely lead to an increased risk of heat-related
stress and illness. The very Young... the elderly... those
without air conditioning... and those participating in
strenuous outdoor activities will be the most susceptible.
Also... car interiors can reach lethal temperatures in a matter
of minutes.

Precautionary/preparedness actions...

Take extra precautions if you work or spend time outside. When
possible... reschedule strenuous activities to the early morning
or evening. Know the signs and symptoms of heat exhaustion and
heat stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work... the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency. Call 9-1-1 immediately.






Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Settlers Pointe, Wentzville, MO

Updated: 4:40 PM CDT

Temperature: 96.2 °F Dew Point: 80 °F Humidity: 59% Wind: SW at 1.0 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 116 °F Graphs

Location: Providence Meadows, Wentzville, MO

Updated: 4:42 PM CDT

Temperature: 97.6 °F Dew Point: 79 °F Humidity: 55% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 116 °F Graphs

Location: Highland Estates, Wentzville, MO

Updated: 4:42 PM CDT

Temperature: 95.8 °F Dew Point: 84 °F Humidity: 69% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 125 °F Graphs

Location: Swaying Oaks, Wentzville, MO

Updated: 4:42 PM CDT

Temperature: 104.5 °F Dew Point: 57 °F Humidity: 21% Wind: NNW at 2.2 mph Pressure: 29.29 in Hourly Precipitation: 0.00 in Heat Index: 104 °F Graphs

Location: Bear Creek, Wentzville, MO

Updated: 4:41 PM CDT

Temperature: 96.8 °F Dew Point: 79 °F Humidity: 57% Wind: North at - Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 116 °F Graphs

Location: Lexington Oaks Court, Foristell, MO

Updated: 4:41 PM CDT

Temperature: 90.0 °F Dew Point: 82 °F Humidity: 78% Wind: North at - Pressure: 29.95 in Hourly Precipitation: - Heat Index: 112 °F Graphs

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

Updated: 4:42 PM CDT

Temperature: 97.1 °F Dew Point: 84 °F Humidity: 67% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 127 °F Graphs

Location: Golf Club of Wentzville, Wentzville, MO

Updated: 4:40 PM CDT

Temperature: 96.8 °F Dew Point: 80 °F Humidity: 58% Wind: SSW at 3.0 mph Pressure: 29.28 in Hourly Precipitation: 0.00 in Heat Index: 117 °F Graphs

Location: APRSWXNET, Batchtown, IL

Updated: 4:17 PM CDT

Temperature: 98 °F Dew Point: 85 °F Humidity: 67% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 131 °F Graphs

Location: Weather from the Roof, Warrenton, MO

Updated: 4:41 PM CDT

Temperature: 94.6 °F Dew Point: 77 °F Humidity: 56% Wind: SSW at 1.8 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 109 °F Graphs

Location: Fence Post Weather, Warrenton, MO

Updated: 4:40 PM CDT

Temperature: 95.0 °F Dew Point: 81 °F Humidity: 64% Wind: SW at 1.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 117 °F Graphs

Location: Royal Oaks, O'Fallon, MO

Updated: 4:42 PM CDT

Temperature: 94.1 °F Dew Point: 80 °F Humidity: 64% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 114 °F Graphs

Location: Crimson Oaks, Lake Saint Louis, MO

Updated: 4:39 PM CDT

Temperature: 97.9 °F Dew Point: 82 °F Humidity: 61% Wind: North at - Pressure: 29.29 in Hourly Precipitation: 0.00 in Heat Index: 123 °F Graphs

Location: Hase's Lair, Warrenton, MO

Updated: 4:42 PM CDT

Temperature: 92.2 °F Dew Point: 80 °F Humidity: 67% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 110 °F Graphs

Location: Locksley Manor, Lake Saint Louis, MO

Updated: 4:41 PM CDT

Temperature: 100.6 °F Dew Point: 77 °F Humidity: 47% Wind: Calm Pressure: 30.65 in Hourly Precipitation: 0.00 in Heat Index: 117 °F Graphs

Location: Conch Terrace, O'Fallon, MO

Updated: 4:42 PM CDT

Temperature: 98.6 °F Dew Point: 83 °F Humidity: 60% Wind: North at - Pressure: 29.98 in Hourly Precipitation: - Heat Index: 125 °F Graphs

Location: Lake Saint Louis, Lake Saint Louis, MO

Updated: 4:42 PM CDT

Temperature: 96.6 °F Dew Point: 80 °F Humidity: 59% Wind: South at 3.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 117 °F Graphs

Location: Ofallon Civic Park, Ofallon, MO

Updated: 4:40 PM CDT

Temperature: 96.5 °F Dew Point: 82 °F Humidity: 64% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 122 °F Graphs

Location: Magnolia, OFallon, MO

Updated: 4:42 PM CDT

Temperature: 103.1 °F Dew Point: 82 °F Humidity: 52% Wind: ESE at 2.2 mph Pressure: 29.61 in Hourly Precipitation: - Heat Index: 130 °F Graphs

Location: Blue Ridge, Hardin, IL

Updated: 4:38 PM CDT

Temperature: 97.2 °F Dew Point: 82 °F Humidity: 62% Wind: SW at 5.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 122 °F Graphs

Location: Dardenne Prairie, Dardenne Prairie, MO

Updated: 4:42 PM CDT

Temperature: 98.1 °F Dew Point: 80 °F Humidity: 57% Wind: SW at 2.0 mph Pressure: 29.59 in Hourly Precipitation: 0.00 in Heat Index: 120 °F Graphs

Location: Piggy's BBQ, OFallon, MO

Updated: 4:39 PM CDT

Temperature: 96.3 °F Dew Point: 79 °F Humidity: 57% Wind: SSW at 4.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 114 °F Graphs

Location: New Melle, Wentzville, MO

Updated: 4:42 PM CDT

Temperature: 94.1 °F Dew Point: 82 °F Humidity: 67% Wind: South at 1.6 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 117 °F Graphs

Location: Avondale, Wentzville, MO

Updated: 4:33 PM CDT

Temperature: 95.3 °F Dew Point: 84 °F Humidity: 70% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 124 °F Graphs

Location: Public Works Department Building, OFallon, MO

Updated: 4:40 PM CDT

Temperature: 98.7 °F Dew Point: 77 °F Humidity: 50% Wind: SW at 4.0 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 115 °F Graphs

Location: Fox Haven, OFallon, MO

Updated: 4:36 PM CDT

Temperature: 95.9 °F Dew Point: 80 °F Humidity: 60% Wind: WSW at 3.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 116 °F Graphs

Location: Twin Chimneys, O'Fallon, MO

Updated: 4:40 PM CDT

Temperature: 103.4 °F Dew Point: 80 °F Humidity: 48% Wind: NE at 2.0 mph Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 126 °F Graphs

Location: Alpine Ridge, OFallon, MO

Updated: 4:41 PM CDT

Temperature: 98.5 °F Dew Point: 80 °F Humidity: 56% Wind: NNW at 3.1 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 120 °F Graphs

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

Updated: 4:42 PM CDT

Temperature: 94.6 °F Dew Point: 82 °F Humidity: 66% Wind: Calm Pressure: 29.52 in Hourly Precipitation: 0.00 in Heat Index: 117 °F Graphs

Location: Ridgetop Estates, OFallon, MO

Updated: 4:40 PM CDT

Temperature: 101.1 °F Dew Point: 78 °F Humidity: 49% Wind: SSE at 2.2 mph Pressure: 30.00 in Hourly Precipitation: - Heat Index: 120 °F Graphs

Location: Little Oaks Drive, O'Fallon, MO

Updated: 4:41 PM CDT

Temperature: 93.7 °F Dew Point: 83 °F Humidity: 71% Wind: North at - Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 119 °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 
353 PM CDT Tuesday Jul 28 2015 


Short term: (through late tonight) 
issued at 349 PM CDT Tuesday Jul 28 2015 


Dangerous heat indices are currently in the 105-117f range over 
the area with temperatures well into the 90s. Lambert is currently 
reporting 100. These values should fall off below criteria by 9 
PM. Isolated thundertorms are beginning to develop over the area 
as atmosphere is currently uncapped and MLCAPES are between 
3000-4000 j/kg. Any storms that do develop this afternoon may 
become strong and may produce gusty winds and heavy downpours 
before the storms diminish around sunset. There will be a better 
chance of storms later tonight as a cold front moves into the 
northern part of the County Warning Area. Have kept with best chances of 
thunderstorms north of I-70 where there will be the best 
combination of ascent from passing trough to the north with low 
level moisture convergence. 


Long term: (wednesday through next tuesday) 
issued at 349 PM CDT Tuesday Jul 28 2015 


(wednesday through friday) 


Have extended the heat warning for the far southern part of the County Warning Area 
into the tomorrow afternoon. Even though the cold front will move 
through the area early in the day...there won't be a strong push of 
cooler and drier air into southeast Missouri and southern Illinois 
until Wednesday night. Because of this, dewpoints will still be in 
the middle 70s with high temperatures climbing into the low 90s which 
will allow heat index readings to climb to around 105 degrees during 
the afternoon. Cooler and drier weather will move into the area for 
Thursday and Friday. 


Scattered thunderstorms will move across with the front on Wednesday 
morning. These storms will be mainly confined along and south of I- 
44 in Missouri and along and south of I-70 in Illinois during the 
afternoon. Thursday and Friday look dry at this point. 


(Saturday through tuesday) 


European model (ecmwf) and GFS continue to advertise northwesterly upper flow for early 
next week with a large high over the southwestern Continental U.S. And large 
mean trough over eastern North America. The operational GFS begins 
to flatten the flow over the ridge by Tuesday whereas the European model (ecmwf) 
keeps the flow over Midwest more northwesterly. The European model (ecmwf) has been 
more consistent and has support from the GFS ensemble mean, so will 
keep with it's solution. Will keep with a dry forecast over the 
weekend into Monday as high pressure moves across the area. By late 
on Tuesday a front will begin to approach the area from the north 
which will increase thunderstorms chances as the atmosphere becomes 
more unstable late in the day. Temperatures will be close to late 
July normals with 850mb temperatures between 18-22c. 


Britt 


&& 


Aviation: (for the 18z tafs through 18z Wednesday afternoon) 
issued at 1241 PM CDT Tuesday Jul 28 2015 


Primary concern for this afternoon is thunderstorm trends. At this 
time, it still looks likely that there will be widely scattered 
thunderstorms over much of eastern Missouri and western Illinois 
this afternoon. Timing and coverage is yet uncertain...but am 
beginning to notice cumulus starting to form over parts of the 
Ozarks which does Bode well for thunderstorm development. Storms 
could be strong with gusty winds and very heavy rain, reducing the 
visibility to IFR conditions. Otherwise expect VFR flight 
conditions to continue. A cold front will move into the area 
overnight which will bring another chance of thunderstorms with 
potential for lowered conditions as well as locally gusty winds. 


Specifics for kstl: 


Primary concern continues to be the possibility for thunderstorms 
this afternoon at the terminal. Think storms will develop over the 
Eastern Ozarks later this afternoon, with outflow boundaries 
moving north into the metropolitan area to produce additional storms 
between 21-00z. Timing and coverage is still uncertain though so I 
did not want to hit it harder than thunderstorms in the vicinity at this time. Storms 
should dissipate during the early evening, and expect VFR 
conditions to prevail for the rest of the night into Wednesday 
morning. There will be another chance of storms during the late 
morning/afternoon as a cold front moves thorugh the area. 


Carney 


&& 


Lsx watches/warnings/advisories: 
MO...excessive heat warning until 9 PM CDT this evening for Boone MO- 
Callaway MO-Cole MO-Crawford MO-Franklin MO-Gasconade MO- 
Jefferson MO-Lincoln MO-Moniteau MO-Montgomery MO-Osage MO- 
St. Charles MO-St. Louis city MO-St. Louis MO-Warren MO- 
Washington MO. 


Excessive heat warning until 9 PM CDT Wednesday for Iron MO- 
Madison MO-Reynolds MO-St. Francois MO-Ste. Genevieve MO. 


Heat advisory until 9 PM CDT this evening for Audrain MO-Knox MO- 
Lewis MO-Marion MO-Monroe MO-Pike MO-Ralls MO-Shelby MO. 


Illinois...excessive heat warning until 9 PM CDT this evening for Calhoun 
Illinois-Jersey Illinois-Madison Illinois-Monroe IL-St. Clair Illinois. 


Excessive heat warning until 9 PM CDT Wednesday for Randolph Illinois. 


Heat advisory until 9 PM CDT this evening for Adams Illinois-Bond Illinois- 
Brown Illinois-Clinton Illinois-Fayette Illinois-Greene Illinois-Macoupin Illinois-Marion 
Illinois-Montgomery Illinois-Pike Illinois-Washington Illinois. 


&& 


$$ 


Weather forecast office lsx 



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