Crystal City, Missouri Weather Conditions

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Current Conditions

  • 72°
  • Clear
  • Wind: Calm
  • Humidity: 93%
  • Visibility: 2.5 miles
  • Dew Point: 70°
  • Pressure: 29.96 in. +

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Fog
Fog
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Thunderstorm
T-storms
72°
82°
88°
86°
81°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Thunderstorm
  • High: 88 °
  • Low: 72 °
  • Thunderstorm
  • Saturday
  • Thunderstorm
  • High: 88 °
  • Low: 72 °
  • T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 72 °
  • Chance of T-Storms
  • Monday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 70 °
  • Chance of T-Storms
  • Tuesday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 70 °
  • Chance of a Thunderstorm

Forecast for Crystal City, Missouri

Updated: 4:00 AM CDT on August 29, 2014

  • Friday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. Fog early. High of 88F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Friday Night

    Mostly cloudy with thunderstorms and rain showers. Low of 72F. Winds from the South at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.

  • Saturday

    Partly cloudy with thunderstorms and rain showers. High of 88F. Winds from the SSW at 5 to 10 mph. Chance of rain 60%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 72F. Winds from the South at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 90F. Winds from the South at 5 to 10 mph. Chance of rain 30%.

  • Sunday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then clear. Low of 72F. Winds from the South at 5 to 15 mph.

  • Monday

    Mostly cloudy with a chance of a thunderstorm and rain. High of 91F with a heat index of 97F. Winds from the South at 5 to 15 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.

  • Monday Night

    Overcast with a chance of a thunderstorm and rain. Low of 70F. Winds from the SSW at 5 to 15 mph. Chance of rain 50% with rainfall amounts near 0.4 in. possible.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm and rain in the afternoon. High of 90F with a heat index of 102F. Winds from the WSW at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Partly cloudy with thunderstorms. Low of 70F. Winds from the South at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.8 in. possible.

  • Wednesday

    Partly cloudy with a chance of a thunderstorm. High of 90F with a heat index of 99F. Winds from the South at 5 to 10 mph. Chance of rain 40%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm. Low of 73F. Winds from the South at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.5 in. possible.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 88F with a heat index of 95F. Winds from the SSW at 5 to 10 mph. Chance of rain 30%.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm. Low of 66F. Winds from the SSE at 5 to 10 mph. Chance of rain 30%.

  • Friday

    Partly cloudy with a chance of a thunderstorm. High of 91F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Friday Night

    Clear. Low of 66F. Winds less than 5 mph.

  • Saturday

    Clear. High of 91F. Winds less than 5 mph.

  • Saturday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 66F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday

    Partly cloudy with a chance of a thunderstorm. High of 91F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday Night

    Partly cloudy. Low of 68F. Winds less than 5 mph.

  • Monday

    Partly cloudy. High of 91F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 68F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Herculaneum, Mott Street, Herculaneum, MO

Updated: 7:10 AM CDT

Temperature: 71.8 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.57 in Hourly Precipitation: - Heat Index: - Graphs

Location: Sandy Creek Winery, Pevely, MO

Updated: 7:13 AM CDT

Temperature: 68.5 °F Dew Point: 68 °F Humidity: 99% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 7:14 AM CDT

Temperature: 70.3 °F Dew Point: 70 °F Humidity: 99% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Imperial - Wellington Subdivision, Imperial, MO

Updated: 7:14 AM CDT

Temperature: 71.2 °F Dew Point: 70 °F Humidity: 97% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: summerfield, Imperial, MO

Updated: 7:14 AM CDT

Temperature: 68.9 °F Dew Point: 69 °F Humidity: 99% Wind: Calm Pressure: 29.72 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Imperial, MO

Updated: 7:14 AM CDT

Temperature: 69.1 °F Dew Point: 66 °F Humidity: 89% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ste Genevieve county, Festus, MO

Updated: 7:11 AM CDT

Temperature: 68.6 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hardy Acres / AA9UC, Waterloo, IL

Updated: 7:12 AM CDT

Temperature: 71.1 °F Dew Point: 60 °F Humidity: 68% Wind: North at - Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 7:14 AM CDT

Temperature: 70.3 °F Dew Point: 69 °F Humidity: 96% Wind: South at 1.1 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Arnold, Arnold, MO

Updated: 7:11 AM CDT

Temperature: 70.4 °F Dew Point: 70 °F Humidity: 97% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Arnold, MO

Updated: 7:12 AM CDT

Temperature: 69.5 °F Dew Point: 68 °F Humidity: 96% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: ARNOLD, Arnold, MO

Updated: 7:10 AM CDT

Temperature: 71.1 °F Dew Point: - Humidity: 88% Wind: North at - Pressure: 29.27 in Hourly Precipitation: - Heat Index: - Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 7:14 AM CDT

Temperature: 72.0 °F Dew Point: 71 °F Humidity: 96% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Christopher Winds, Oakville, MO

Updated: 7:10 AM CDT

Temperature: 71.3 °F Dew Point: 70 °F Humidity: 97% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 7:14 AM CDT

Temperature: 68.8 °F Dew Point: 68 °F Humidity: 98% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 7:14 AM CDT

Temperature: 71.4 °F Dew Point: 71 °F Humidity: 98% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Devall's Backyard, Waterloo, IL

Updated: 7:14 AM CDT

Temperature: 72.5 °F Dew Point: 72 °F Humidity: 98% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Heat Index: - Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 7:10 AM CDT

Temperature: 71.0 °F Dew Point: 70 °F Humidity: 97% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 7:14 AM CDT

Temperature: 71.2 °F Dew Point: 70 °F Humidity: 96% Wind: ESE at 1.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 7:14 AM CDT

Temperature: 70.9 °F Dew Point: 71 °F Humidity: 100% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Gedern Village, Columbia, IL

Updated: 7:12 AM CDT

Temperature: 71.8 °F Dew Point: 71 °F Humidity: 97% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Gerry's Pool, Prairie Du Rocher, IL

Updated: 7:10 AM CDT

Temperature: 70.5 °F Dew Point: 68 °F Humidity: 92% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: High Ridge Fire District House #1, High Ridge, MO

Updated: 7:06 AM CDT

Temperature: 74.1 °F Dew Point: 71 °F Humidity: 91% Wind: SSE at 2.0 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: MesoWest I-255 / IL-3 @ Columbia IL US ILDOT, Columbia, IL

Updated: 6:25 AM CDT

Temperature: 72 °F Dew Point: 70 °F Humidity: 94% Wind: North at 1 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: South St. Louis County, St. Louis, MO

Updated: 7:10 AM CDT

Temperature: 76.5 °F Dew Point: - Humidity: 79% Wind: ESE at 2.0 mph Pressure: 29.31 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: San Luis Trails, Fenton, MO

Updated: 7:14 AM CDT

Temperature: 70.4 °F Dew Point: 69 °F Humidity: 94% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: St. Joseph Hill, Pacific, MO

Updated: 7:09 AM CDT

Temperature: 68.8 °F Dew Point: 68 °F Humidity: 96% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 7:14 AM CDT

Temperature: 70.8 °F Dew Point: 69 °F Humidity: 95% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lake Forest, Ste Genevieve, MO

Updated: 7:14 AM CDT

Temperature: 70.3 °F Dew Point: 58 °F Humidity: 64% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: South County, Affton, MO

Updated: 7:14 AM CDT

Temperature: 72.1 °F Dew Point: 72 °F Humidity: 99% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: BROADWAY (South), St. Louis, MO

Updated: 7:10 AM CDT

Temperature: 72.7 °F Dew Point: - Humidity: 86% Wind: North at - Pressure: 29.37 in Hourly Precipitation: - Heat Index: 71 °F Graphs

Location: Crestwood, Crestwood, MO

Updated: 7:12 AM CDT

Temperature: 71.4 °F Dew Point: 68 °F Humidity: 88% Wind: Calm Pressure: 29.67 in Hourly Precipitation: - Heat Index: - Graphs

Location: Sunset Hills, St Louis, MO

Updated: 7:04 AM CDT

Temperature: 72.4 °F Dew Point: 71 °F Humidity: 94% Wind: Calm Pressure: 29.92 in Hourly Precipitation: - Heat Index: - Graphs

Location: Millstadt, Millstadt, IL

Updated: 7:14 AM CDT

Temperature: 70.7 °F Dew Point: 68 °F Humidity: 91% Wind: South at 3.5 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: BONTERRE, Valles Mines, MO

Updated: 7:10 AM CDT

Temperature: 69.8 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.08 in Hourly Precipitation: - 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 
648 am CDT Fri Aug 29 2014 


Short term: (through Sunday night) 
issued at 326 am CDT Fri Aug 29 2014 


The primary forecast concern over the next 7 days is precipitation 
chances. 


An upper trough axis is forecast to move across the area 
today/tomorrow accompanied by sh/ts. A surface low moving into 
the Great Lakes will drag a cold front into MO/Illinois on Sat, but the 
temperature gradient is forecast to be fairly weak and this looks 
like more of a gentle wind shift line rather than a true exchange 
of air masses. Even so, models show a secondary vort Max clipping 
the northern County Warning Area on Sat and the wind shift line might act as a 
focus for sh/ts development. It doesn't look like solid rain for 
the whole weekend, but it's tough to rule out scattered sh/ts in 
almost any forecast period because isentropic ascent starts to 
increase ahead of the next trough almost as soon as the Fri/Sat 
trough moves away from the area. The most likely time period for 
mostly dry weather across most of the lsx County Warning Area appears to be from 
late Sat night through late Sun morning. 


Kanofsky 


Long term: (monday through thursday) 
issued at 326 am CDT Fri Aug 29 2014 


Precipitation chances increase again on Mon/Mon night ahead of an 
approaching longwave trough. With several embedded vorticity 
maxima moving through the base of the broad trough, scattered 
sh/ts will be possible across MO/Illinois through Tue as a cold front 
sinks towards the MO/Iowa border. The best opportunity for 
precipitation appears to be on Mon morning as the nocturnal low level jet 
veers and becomes focused across the County Warning Area. The temperature gradient 
is forecast to be stronger with this front compared to the 
previous one, but models still show that the synoptic front never 
makes it very far into MO before it is lifted back northward as a 
warm front. Broad upper troughing then gives way to quasizonal 
flow by Tue night followed by weak upper ridging towards the end 
of the week. 


Temperatures look seasonally warm, although there is more 
uncertainty with temps on days when precipitation is expected. 
If recent model runs are correct with the expansion of the upper 
high over the southeastern conus, then expect a warming trend for 
late next week. 


Kanofsky 


&& 


Aviation: (for the 12z tafs through 12z Saturday morning) 
issued at 638 am CDT Fri Aug 29 2014 


Precipitation chances will be on the increase tonight as a 
weakening short wave trof move across the area. Models all seem 
to agree that the accompanying surface cold front will not make 
it across the area. With upper level support weakening and no 
strong forcing at the surface, other than outflows, that puts 
some question into the timing and coverage of the precipitaton. 
Have thus settled for prob30s for this evening and overnight. 


Specifics for kstl: will maintain vcts for this afternoon, 
although with the warm front further north, suspect the coverage 
may be less. Question is with the approaching but weakening system 
tonight. Models all want to bring in precipitation, but seem to 
what to highlight areas to the north and south. A prob30 looks 
good for this evening and overnight. 


Jpk 


&& 


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


$$ 


Weather forecast office lsx 












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