Arnold, Missouri Weather Conditions

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Current Conditions

  • 83°
  • Clear
  • Wind: South 7 mph
  • Humidity: 63%
  • Visibility: 10.0 miles
  • Dew Point: 69°
  • Pressure: 30.01 in. 0
  • Heat Index: 86

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Next 12 Hours

11  am
2  pm
5  pm
8  pm
11  pm
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
85°
92°
92°
84°
78°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Clear
  • High: 95 °
  • Low: 70 °
  • Clear
  • Friday
  • Clear
  • High: 95 °
  • Low: 70 °
  • Clear
  • Saturday
  • Clear
  • High: 96 °
  • Low: 71 °
  • Clear
  • Sunday
  • Clear
  • High: 96 °
  • Low: 74 °
  • Clear
  • Monday
  • Chance of a Thunderstorm
  • High: 87 °
  • Low: 71 °
  • Chance of T-Storms

Forecast for Arnold, Missouri

Updated: 7:01 AM CDT on January 03, 2015

  • Thursday

    Mainly sunny. High near 95F. Winds SSW at 5 to 10 mph.

  • Thursday Night

    A clear sky. Low around 70F. Winds light and variable.

  • Friday

    Plentiful sunshine. High near 95F. Winds light and variable.

  • Friday Night

    Clear skies. Low around 70F. Winds light and variable.

  • Saturday

    Sunny. High 96F. Winds SSE at 5 to 10 mph.

  • Saturday Night

    Clear skies with a few passing clouds. Low 71F. Winds light and variable.

  • Sunday

    Sunny skies. High 96F. Winds S at 10 to 15 mph.

  • Sunday Night

    A few clouds overnight. Low 74F. Winds S at 5 to 10 mph.

  • Monday

    Scattered thunderstorms. High 87F. Winds SW at 5 to 10 mph. Chance of rain 60%.

  • Monday Night

    Partial cloudiness early, with scattered showers and thunderstorms later during the night. Low 71F. Winds light and variable. Chance of rain 60%.

  • Tuesday

    Scattered thunderstorms. High 87F. Winds S at 5 to 10 mph. Chance of rain 60%.

  • Tuesday Night

    Scattered thunderstorms. Low 71F. Winds SW at 5 to 10 mph. Chance of rain 60%.

  • Wednesday

    Scattered showers and thunderstorms. High 82F. Winds NW at 5 to 10 mph. Chance of rain 60%.

  • Wednesday Night

    Mostly cloudy with showers and a few thunderstorms. Low 63F. Winds N at 5 to 10 mph. Chance of rain 60%.

  • Thursday

    Sunshine along with some cloudy intervals. High 82F. Winds N at 5 to 10 mph.

  • Thursday Night

    Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 59F. Winds light and variable. Chance of rain 60%.

  • Friday

    Cloudy with showers. High 79F. Winds N at 5 to 10 mph. Chance of rain 60%.

  • Friday Night

    Partly cloudy skies. Low near 55F. Winds N at 5 to 10 mph.

  • Saturday

    Sunny skies. High 78F. Winds NNE at 5 to 10 mph.

  • Saturday Night

    Mostly clear. Low 58F. Winds light and variable.

  • Sunday

    Intervals of clouds and sunshine. High 78F. Winds ESE at 5 to 10 mph.

  • Sunday Night

    Mainly clear skies. Low 58F. Winds light and variable.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Guardian Court, Arnold, MO

Updated: 10:00 AM CDT

Temperature: 81.1 °F Dew Point: 75 °F Humidity: 82% Wind: North at - Pressure: 29.99 in Hourly Precipitation: - Heat Index: 87 °F Graphs

Location: Arnold, MO

Updated: 10:02 AM CDT

Temperature: 80.2 °F Dew Point: 75 °F Humidity: 85% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: APRSWXNET, Sulphur Springs, MO

Updated: 9:48 AM CDT

Temperature: 81 °F Dew Point: 72 °F Humidity: 75% Wind: SSE at 1 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Arnold, Arnold, MO

Updated: 10:03 AM CDT

Temperature: 83.0 °F Dew Point: 74 °F Humidity: 74% Wind: South at 5.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: summerfield, Imperial, MO

Updated: 10:08 AM CDT

Temperature: 84.2 °F Dew Point: 73 °F Humidity: 70% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: 6735 Wynfield Terrace Dr., St. Louis, MO

Updated: 10:08 AM CDT

Temperature: 82.8 °F Dew Point: 68 °F Humidity: 60% Wind: South at 2.2 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 10:05 AM CDT

Temperature: 83.0 °F Dew Point: 73 °F Humidity: 72% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Arrowhead STL County, Saint Louis, MO

Updated: 10:01 AM CDT

Temperature: 89.2 °F Dew Point: 71 °F Humidity: 55% Wind: SE at 1.7 mph Pressure: 30.09 in Hourly Precipitation: - Heat Index: 95 °F Graphs

Location: Providence Pointe, Oakville, MO

Updated: 10:08 AM CDT

Temperature: 82.9 °F Dew Point: 73 °F Humidity: 73% Wind: SW at 2.6 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 10:08 AM CDT

Temperature: 83.5 °F Dew Point: 75 °F Humidity: 75% Wind: NW at 1.6 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 10:08 AM CDT

Temperature: 86.3 °F Dew Point: 76 °F Humidity: 71% Wind: SSW at 2.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 96 °F Graphs

Location: Christopher Winds, Oakville, MO

Updated: 10:08 AM CDT

Temperature: 81.8 °F Dew Point: 74 °F Humidity: 76% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Lakeview Ridge Drive, Fenton, MO

Updated: 10:00 AM CDT

Temperature: 78.6 °F Dew Point: 72 °F Humidity: 80% Wind: North at - Pressure: 30.06 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: Deerpath Acres Court, Saint Louis, MO

Updated: 10:00 AM CDT

Temperature: 90.1 °F Dew Point: 77 °F Humidity: 64% Wind: North at - Pressure: 30.03 in Hourly Precipitation: - Heat Index: 102 °F Graphs

Location: Cathedral Drive, Saint Louis, MO

Updated: 10:00 AM CDT

Temperature: 78.8 °F Dew Point: 73 °F Humidity: 82% Wind: North at - Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 10:08 AM CDT

Temperature: 78.2 °F Dew Point: 72 °F Humidity: 81% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: San Luis Trails, Fenton, MO

Updated: 10:08 AM CDT

Temperature: 80.7 °F Dew Point: 68 °F Humidity: 66% Wind: WSW at 2.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: APRSWXNET, Saint Louis, MO

Updated: 9:31 AM CDT

Temperature: 83 °F Dew Point: 73 °F Humidity: 71% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

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

Updated: 10:06 AM CDT

Temperature: 81.6 °F Dew Point: 72 °F Humidity: 73% Wind: SSW at 3.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: St. Louis, MO

Updated: 10:08 AM CDT

Temperature: 79.7 °F Dew Point: 73 °F Humidity: 81% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: BUCKLEY MEADOWS 4, Saint Louis, MO

Updated: 9:59 AM CDT

Temperature: 89.4 °F Dew Point: 75 °F Humidity: 63% Wind: ESE at 2.7 mph Pressure: 29.78 in Hourly Precipitation: - Heat Index: 100 °F Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 10:08 AM CDT

Temperature: 80.7 °F Dew Point: 73 °F Humidity: 77% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Bent Tree Trails, Fenton, MO

Updated: 9:49 AM CDT

Temperature: 88.3 °F Dew Point: 71 °F Humidity: 57% Wind: ESE at 1.6 mph Pressure: 29.73 in Hourly Precipitation: - Heat Index: 94 °F Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 10:08 AM CDT

Temperature: 86.4 °F Dew Point: 79 °F Humidity: 78% Wind: SE at 1.1 mph Pressure: 29.44 in Hourly Precipitation: 0.00 in Heat Index: 100 °F Graphs

Location: APRSWXNET, Saint Louis, MO

Updated: 8:54 AM CDT

Temperature: 78 °F Dew Point: 71 °F Humidity: 80% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Crestwood, Crestwood, MO

Updated: 9:56 AM CDT

Temperature: 87.8 °F Dew Point: 74 °F Humidity: 64% Wind: SW at 2.2 mph Pressure: 29.72 in Hourly Precipitation: - Heat Index: 97 °F Graphs

Location: South County, Affton, MO

Updated: 10:08 AM CDT

Temperature: 84.6 °F Dew Point: 74 °F Humidity: 70% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 10:08 AM CDT

Temperature: 80.4 °F Dew Point: 74 °F Humidity: 81% Wind: SW at 1.6 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Gedern Village, Columbia, IL

Updated: 10:07 AM CDT

Temperature: 81.1 °F Dew Point: 72 °F Humidity: 75% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Sweetbriar Lane, Kirkwood, MO

Updated: 6:12 AM CDT

Temperature: 73.9 °F Dew Point: 69 °F Humidity: 85% Wind: North at - Pressure: 29.86 in Hourly Precipitation: - Heat Index: 73 °F Graphs

Location: Kirkwood, Kirkwood, MO

Updated: 10:08 AM CDT

Temperature: 81.3 °F Dew Point: 71 °F Humidity: 71% Wind: Calm Pressure: 29.61 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Rosewood Korner, Waterloo, IL

Updated: 10:02 AM CDT

Temperature: 87.1 °F Dew Point: 76 °F Humidity: 70% Wind: SW at 4.7 mph Pressure: 29.94 in Hourly Precipitation: - Heat Index: 98 °F Graphs

Location: South Woodlawn Avenue, Saint Louis, MO

Updated: 10:01 AM CDT

Temperature: 79.7 °F Dew Point: 72 °F Humidity: 78% Wind: North at - Pressure: 29.49 in Hourly Precipitation: - Heat Index: 83 °F Graphs

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

Updated: 10:08 AM CDT

Temperature: 83.7 °F Dew Point: 73 °F Humidity: 70% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 90 °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 
645 am CDT Thursday Sep 3 2015 


Short term: (through late this afternoon) 
issued at 313 am CDT Thu Sep 3 2015 


Weak warm advection over central Missouri is producing isolated 
showers northwest of Columbia. Expect this activity to continue 
this morning for a few more hours...but should be ending between 12z 
and 15z as the weak low level jet backs and warm advection shuts 
off. Remainder of the day looks to be a Carbon copy of the past 
couple with high pressure controlling our weather. Expect highs in 
the 90-95 degree range. Wouldn't be surprised to see an isolated 
thunderstorm or two this afternoon, but overall chances are 10 
percent or less across the area so have kept the forecast dry for 
today. 


Carney 


Long term: (tonight through wednesday) 
issued at 346 am CDT Thu Sep 3 2015 


Stagnant weather pattern will persist at least through Sunday as the 
upper level ridge remains locked in over the center of the country. 
The trof currently over the Pacific northwest will move east across 
The Rockies into the northern plains by late Sunday causing 
cyclogenesis over the Dakotas. Resulting cold front plows southeast 
into Iowa by Monday. As a result, the temperature and precip 
forecast becomes a little tricky Monday through Wednesday. While 
Monday may be a repeat of Sunday with respect to temperatures, 
medium range ensemble guidance trends pretty sharply cooler into the 
low to mid 80s on Tuesday, even though we're still in the warm 
sector with the front hanging back across Iowa. Upper 70s is being 
advertised by guidance across northeast Missouri with low to mid 80s 
further south on Wednesday as the front finally dives southeast into 
our County warning forecast area. While I do think mid to high chance for thunderstorms as 
indicated by guidance is appropriate for Monday through 
Wednesday...not sure about the temperature forecast. There isn't 
any airmass change until the front pushes through, and the low level 
thermal ridge is still over our region with 850mb temps in excess of 
+20c. Low to mid 80s just feels too cool to ME until the front 
moves through...regardless of the precip chances. If I was 
forecasting in a vacuum, i'd keep temperatures at least 5 degrees 
warmer than guidance; however, have kept the forecast temperatures 
close to the ensemble guidance to maintain consistency with 
neighboring offices. 


Carney 


&& 


Aviation: (for the 12z tafs through 12z Friday morning) 
issued at 645 am CDT Thu Sep 3 2015 


Mid cloud deck (with bases aoa 10kft) and a few sprinkles are drifting 
southeast across the region this morning. Radar indicates some of 
this rain may effect kcou next hour or so, but since precip is so 
light no vsby restriction is expected. Otherwise, weather trends 
today should be similar to those of yesterday, with high based 
morning clouds giving way to scattered cumulus around midday, with this 
diurnally driven cloudiness dissipating as we head into the early 
evening hours. Did include some late night fog in the tafs for the 
low lying locations of ksus and kcps. 


Specifics for kstl: VFR conditions are expected throughout the 
period, with clouds aoa 5kft and south-southwest winds aob 10kts. 


Truett 


&& 


Preliminary point temperatures/pops: 
Saint Louis 94 74 94 75 / 10 5 5 5 
Quincy 92 70 93 70 / 10 5 5 5 
Columbia 92 70 93 70 / 20 5 5 5 
Jefferson City 93 70 93 70 / 10 5 5 5 
Salem 91 72 92 72 / 10 5 5 5 
Farmington 92 69 92 69 / 10 5 5 5 


&& 


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


$$ 


Weather forecast office lsx 



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