Arnold, Missouri Weather Conditions

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Current Conditions

  • 62°
  • Scattered Clouds
  • Wind: West 7 mph
  • Humidity: 84%
  • Visibility: 10.0 miles
  • Dew Point: 57°
  • Pressure: 29.47 in. 0

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Next 12 Hours

8  pm
11  pm
2  am
5  am
8  am
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Overcast
Overcast
64°
60°
58°
56°
53°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Partly Cloudy
  • High: 64 °
  • Low: 44 °
  • Partly Cloudy
  • Tuesday
  • Clear
  • High: 67 °
  • Low: 47 °
  • Clear
  • Wednesday
  • Chance of Rain
  • High: 65 °
  • Low: 43 °
  • Chance of Rain
  • Thursday
  • Partly Cloudy
  • High: 63 °
  • Low: 41 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 64 °
  • Low: 47 °
  • Partly Cloudy

Forecast for Arnold, Missouri

Updated: 4:16 PM CDT on January 19, 2015

  • Sunday

    A few thunderstorms possible. Lows overnight in the low 50s.

  • Sunday Night

    Mostly cloudy with showers and a few thunderstorms. Low 53F. Winds W at 10 to 20 mph. Chance of rain 60%.

  • Monday

    Sunshine and clouds mixed. High 64F. Winds WNW at 15 to 25 mph.

  • Monday Night

    Mostly clear skies. Low 44F. Winds W at 10 to 20 mph.

  • Tuesday

    Mostly sunny skies. High 67F. Winds W at 10 to 20 mph.

  • Tuesday Night

    Rain showers in the evening becoming a steady light rain overnight. Low 47F. Winds WSW at 10 to 15 mph. Chance of rain 60%.

  • Wednesday

    Showers in the morning, then partly cloudy in the afternoon. High near 65F. Winds N at 5 to 10 mph. Chance of rain 60%.

  • Wednesday Night

    Clear skies with a few passing clouds. Low 43F. Winds N at 5 to 10 mph.

  • Thursday

    Partly cloudy skies. High 63F. Winds NNW at 10 to 15 mph.

  • Thursday Night

    Mostly clear skies. Low 41F. Winds N at 5 to 10 mph.

  • Friday

    Intervals of clouds and sunshine. High 64F. Winds ENE at 5 to 10 mph.

  • Friday Night

    Rain showers in the evening will evolve into a more steady rain overnight. Low 47F. Winds E at 5 to 10 mph. Chance of rain 80%.

  • Saturday

    Cloudy skies. High near 60F. Winds NE at 5 to 10 mph.

  • Saturday Night

    Some clouds early will give way to generally clear conditions overnight. Low 44F. Winds NNE at 5 to 10 mph.

  • Sunday

    Mainly sunny. High 66F. Winds NE at 5 to 10 mph.

  • Sunday Night

    A few clouds from time to time. Low 48F. Winds ENE at 5 to 10 mph.

  • Monday

    Partly cloudy early then becoming cloudy with periods of light rain later in the day. High 67F. Winds NE at 5 to 10 mph. Chance of rain 60%.

  • Monday Night

    Overcast with rain showers at times. Low 47F. Winds NNE at 5 to 10 mph. Chance of rain 60%.

  • Tuesday

    Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 67F. Winds N at 5 to 10 mph.

  • Tuesday Night

    Mainly clear. Low 49F. Winds E at 5 to 10 mph.

  • Wednesday

    Generally sunny. High 73F. Winds ESE at 5 to 10 mph.

  • Wednesday Night

    Mostly clear skies. Low 52F. Winds SE at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Guardian Court, Arnold, MO

Updated: 7:41 PM CDT

Temperature: 64.0 °F Dew Point: 59 °F Humidity: 83% Wind: North at - Pressure: 29.46 in Hourly Precipitation: - Graphs

Location: Arnold # 1, Arnold, MO

Updated: 7:36 PM CDT

Temperature: 61.5 °F Dew Point: 58 °F Humidity: 87% Wind: Calm Pressure: 29.56 in Hourly Precipitation: - Graphs

Location: ARNOLD, Arnold, MO

Updated: 7:40 PM CDT

Temperature: 61.5 °F Dew Point: - Humidity: 87% Wind: North at - Pressure: 28.87 in Hourly Precipitation: - Graphs

Location: Arnold, MO

Updated: 7:36 PM CDT

Temperature: 61.6 °F Dew Point: 61 °F Humidity: 97% Wind: Calm Pressure: 29.45 in Hourly Precipitation: 0.00 in Graphs

Location: Arnold, Arnold, MO

Updated: 7:43 PM CDT

Temperature: 61.6 °F Dew Point: 59 °F Humidity: 91% Wind: Calm Pressure: 29.45 in Hourly Precipitation: 0.00 in Graphs

Location: summerfield, Imperial, MO

Updated: 7:43 PM CDT

Temperature: 62.1 °F Dew Point: 62 °F Humidity: 98% Wind: Calm Pressure: 29.25 in Hourly Precipitation: 0.00 in Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 7:43 PM CDT

Temperature: 61.3 °F Dew Point: 58 °F Humidity: 88% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Graphs

Location: Arrowhead STL County, Saint Louis, MO

Updated: 7:37 PM CDT

Temperature: 61.3 °F Dew Point: 57 °F Humidity: 87% Wind: Calm Pressure: 29.60 in Hourly Precipitation: - Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 7:43 PM CDT

Temperature: 61.4 °F Dew Point: 59 °F Humidity: 91% Wind: Calm Pressure: 29.52 in Hourly Precipitation: 0.00 in Graphs

Location: APRSWXNET, Imperial, MO

Updated: 7:24 PM CDT

Temperature: 64 °F Dew Point: 61 °F Humidity: 91% Wind: Calm Pressure: 29.45 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest, Saint Louis, MO

Updated: 7:00 PM CDT

Temperature: 66 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 7:43 PM CDT

Temperature: 61.3 °F Dew Point: 59 °F Humidity: 91% Wind: Calm Pressure: 29.56 in Hourly Precipitation: 0.00 in Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 7:43 PM CDT

Temperature: 59.9 °F Dew Point: 59 °F Humidity: 96% Wind: Calm Pressure: 29.46 in Hourly Precipitation: 0.00 in Graphs

Location: Christopher Winds, Oakville, MO

Updated: 7:43 PM CDT

Temperature: 61.2 °F Dew Point: 59 °F Humidity: 92% Wind: Calm Pressure: 29.44 in Hourly Precipitation: 0.00 in Graphs

Location: Deerpath Acres Court, Saint Louis, MO

Updated: 7:41 PM CDT

Temperature: 60.8 °F Dew Point: 61 °F Humidity: 100% Wind: North at - Pressure: 29.50 in Hourly Precipitation: - Graphs

Location: Cathedral Drive, Saint Louis, MO

Updated: 7:41 PM CDT

Temperature: 62.2 °F Dew Point: 59 °F Humidity: 90% Wind: North at - Pressure: 29.55 in Hourly Precipitation: 0.00 in Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 7:43 PM CDT

Temperature: 60.5 °F Dew Point: 59 °F Humidity: 95% Wind: SW at 1.0 mph Pressure: 29.40 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 7:40 PM CDT

Temperature: 66.0 °F Dew Point: - Humidity: 75% Wind: Calm Pressure: 28.84 in Hourly Precipitation: 0.00 in Graphs

Location: San Luis Trails, Fenton, MO

Updated: 7:43 PM CDT

Temperature: 61.8 °F Dew Point: 58 °F Humidity: 88% Wind: Calm Pressure: 29.41 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest, Columbia, IL

Updated: 7:00 PM CDT

Temperature: 64 °F Dew Point: - Humidity: - Wind: North at 255 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 7:43 PM CDT

Temperature: 61.2 °F Dew Point: 61 °F Humidity: 98% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Graphs

Location: Upper Moss Hollow Road, Barnhart, MO

Updated: 7:42 PM CDT

Temperature: 64.4 °F Dew Point: 59 °F Humidity: 82% Wind: North at - Pressure: 28.90 in Hourly Precipitation: - Graphs

Location: APRSWXNET, Saint Louis, MO

Updated: 7:25 PM CDT

Temperature: 61 °F Dew Point: 59 °F Humidity: 93% Wind: Calm Pressure: 29.47 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 7:29 PM CDT

Temperature: 64.5 °F Dew Point: 61 °F Humidity: 89% Wind: WSW at 4.0 mph Pressure: 29.45 in Hourly Precipitation: 0.00 in Graphs

Location: St. Louis, MO

Updated: 7:43 PM CDT

Temperature: 61.5 °F Dew Point: 59 °F Humidity: 92% Wind: Calm Pressure: 29.37 in Hourly Precipitation: 0.00 in Graphs

Location: BUCKLEY MEADOWS 4, Saint Louis, MO

Updated: 7:34 PM CDT

Temperature: 61.2 °F Dew Point: 60 °F Humidity: 95% Wind: Calm Pressure: 29.26 in Hourly Precipitation: - Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 7:43 PM CDT

Temperature: 61.8 °F Dew Point: 60 °F Humidity: 93% Wind: Calm Pressure: 29.45 in Hourly Precipitation: 0.00 in Graphs

Location: Bent Tree Trails, Fenton, MO

Updated: 7:42 PM CDT

Temperature: 61.5 °F Dew Point: 60 °F Humidity: 93% Wind: SW at 1.6 mph Pressure: 29.21 in Hourly Precipitation: - Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 7:42 PM CDT

Temperature: 60.3 °F Dew Point: 60 °F Humidity: 98% Wind: Calm Pressure: 28.91 in Hourly Precipitation: 0.00 in Graphs

Location: Sunset Hills, St Louis, MO

Updated: 7:36 PM CDT

Temperature: 60.7 °F Dew Point: 59 °F Humidity: 95% Wind: Calm Pressure: 29.47 in Hourly Precipitation: - Graphs

Location: Crestwood, Crestwood, MO

Updated: 7:31 PM CDT

Temperature: 61.3 °F Dew Point: 58 °F Humidity: 88% Wind: West at 1.7 mph Pressure: 29.20 in Hourly Precipitation: - Graphs

Location: South County, Affton, MO

Updated: 7:43 PM CDT

Temperature: 61.2 °F Dew Point: 60 °F Humidity: 96% Wind: Calm Pressure: 29.37 in Hourly Precipitation: 0.00 in Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 7:43 PM CDT

Temperature: 63.5 °F Dew Point: 62 °F Humidity: 93% Wind: SW at 6.9 mph Pressure: 29.57 in Hourly Precipitation: 0.00 in Graphs

Location: House Springs, House Springs, MO

Updated: 7:42 PM CDT

Temperature: 62.6 °F Dew Point: 62 °F Humidity: 99% Wind: Calm Pressure: 26.75 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest, Columbia, IL

Updated: 7:10 PM CDT

Temperature: 62 °F Dew Point: 57 °F Humidity: 84% Wind: NNW at 5 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Gedern Village, Columbia, IL

Updated: 7:42 PM CDT

Temperature: 61.3 °F Dew Point: 59 °F Humidity: 91% Wind: Calm Pressure: 29.49 in Hourly Precipitation: 0.00 in Graphs

Location: Sweetbriar Lane, Kirkwood, MO

Updated: 6:31 PM CDT

Temperature: 63.9 °F Dew Point: 59 °F Humidity: 84% Wind: North at - Pressure: 29.38 in Hourly Precipitation: - Graphs

Location: Kirkwood, Kirkwood, MO

Updated: 7:43 PM CDT

Temperature: 61.7 °F Dew Point: 61 °F Humidity: 96% Wind: Calm Pressure: 29.08 in Hourly Precipitation: 0.00 in Graphs

Location: Rosewood Korner, Waterloo, IL

Updated: 7:42 PM CDT

Temperature: 60.4 °F Dew Point: 58 °F Humidity: 90% Wind: Calm Pressure: 28.81 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 7:30 PM CDT

Temperature: 62.1 °F Dew Point: 59 °F Humidity: 91% Wind: Calm Pressure: 29.47 in Hourly Precipitation: - 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 
656 PM CDT sun Apr 19 2015 


Short term: (through tonight) 
issued at 344 PM CDT sun Apr 19 2015 


Main rain shield that developed in response to the low pressure 
system to our southeast will continue to slowly lift northeast late 
this afternoon and into this evening. Meanwhile, scattered 
convection will continue to develop in its wake ahead of the main 
upper level trof and cold front. Believe much of the convection is 
diurnally driven and will dissipate late in the evening, with only a 
few showers remaining after midnight. Threat of any severe weather 
should stay south of the County Warning Area where better instability resides. 


Cvking 


Long term: (monday through next sunday) 
issued at 344 PM CDT sun Apr 19 2015 


(monday through wednesday) 


Focus finally turns to temps thru the period. 


Have kept slight chance pops Mon morning across nern/ern portions of 
the County Warning Area as the system continues to pull out of the region. Some of 
the explicit mdls suggest isod rain showers developing during the afternoon 
hours. However, given the lack of precip behind the trof currently 
across the plains, believe mdls are simply showing cumulus developing. 
Have therefore kept much of the day dry. 


Next chance for rain is then tues afternoon thru Wed with mdls 
continuing to show a S/W rounding the base of the upper low. Mdls 
continue to differ in placement and timing for this S/W. Have kept 
similar pops going for this period until mdls come into better 
agreement consistently. 


Temps for Mon will be difficult with questions about cloud cover. 
Expect cumulus to develop behind this trof. Based on latest Sat trends, 
wud expect more cloud cover than mdls are currently expecting. 
However, am trending twd a more cloud free soln, and therefore 
slightly warmer, for now. Temps shud moderate slightly with the 
thermal ridge building into the area on tues, but then cold air advection again on 
Wed as a back door cdfnt pushes thru the area again. 


(Thursday through sunday) 


Mdl differences continue thru the extd with the GFS/Gem a more zonal 
soln and the European model (ecmwf) more amplified. Have therefore kept pops on the 
low end except for periods where mdls were in better agreement 
despite differences in setup. 


Largely kept temp trends going as well twd a compromise given the 
uncertainty in solns. 


Tilly 


&& 


Aviation: (for the 00z tafs through 00z Monday evening) 
issued at 632 PM CDT sun Apr 19 2015 


Specifics for kcou, kuin: an area of scattered rain showers/thunderstorms and rain was 
approaching kcou at taf issuance while a separate area of rain showers was 
moving away from KUIN. Scattered rain showers/thunderstorms and rain are possible at kcou 
for the next few hours because the decrease in clouds during the 
late afternoon was contributing to slightly greater instability. 
West to southwest winds will become northwesterly after a cold 
front moves through the region overnight. Winds are expected to 
increase behind the front and gust to around 30kts. Fog is 
possible tonight during a brief window ahead of the cold front in 
any locations where clouds clear out near or shortly after sunset. 
Upstream observations suggest that MVFR ceilings will persist for 
several hours after fropa. 


Specifics for kstl, ksus, kcps: although isolated rain showers/thunderstorms and rain are 
possible tonight, there is little instability left near the St. 
Louis Metro area after the rain showers all day, thus there is no 
mention of precip in the 00z tafs attm. West to southwest winds 
will become northwesterly after a cold front moves through the 
region overnight. Winds are expected to increase behind the front 
and gust to around 30kts. Winds will decrease after sunset on 
Monday. Fog is possible tonight during a brief window ahead of the 
cold front in any locations where clouds clear out near or shortly 
after sunset. Upstream observations suggest that MVFR ceilings 
will persist for several hours after fropa. 


Kanofsky 


&& 


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


$$ 


Weather forecast office lsx 



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