Arnold, Missouri Weather Conditions

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Current Conditions

  • 80°
  • Clear
  • Wind: SSE 10 mph
  • Humidity: 29%
  • Visibility: 10.0 miles
  • Dew Point: 45°
  • Pressure: 30.09 in. -

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Next 12 Hours

4  pm
7  pm
10  pm
1  am
4  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
77°
72°
66°
61°
57°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Partly Cloudy
  • High: 80 °
  • Low: 57 °
  • Partly Cloudy
  • Monday
  • Thunderstorm
  • High: 72 °
  • Low: 48 °
  • T-Storms
  • Tuesday
  • Clear
  • High: 66 °
  • Low: 43 °
  • Clear
  • Wednesday
  • Clear
  • High: 66 °
  • Low: 50 °
  • Clear
  • Thursday
  • Chance of a Thunderstorm
  • High: 73 °
  • Low: 55 °
  • Chance of T-Storms

Forecast for Arnold, Missouri

Updated: 4:00 PM CDT on April 20, 2014

  • Sunday

    Partly cloudy. High of 79F. Winds from the SSE at 5 to 10 mph.

  • Sunday Night

    Partly cloudy. Low of 57F. Winds from the South at 5 to 10 mph.

  • Monday

    Mostly cloudy with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 72F. Winds from the SSW at 5 to 10 mph. Chance of rain 70%.

  • Monday Night

    Overcast with a chance of a thunderstorm and a chance of rain in the evening, then partly cloudy with a chance of rain. Low of 48F. Winds from the WNW at 5 to 10 mph. Chance of rain 50%.

  • Tuesday

    Clear. High of 66F. Winds from the NNW at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy in the evening, then clear. Low of 43F. Winds from the North at 5 to 15 mph shifting to the ENE after midnight.

  • Wednesday

    Clear. High of 66F. Winds from the SE at 10 to 15 mph.

  • Wednesday Night

    Clear in the evening, then overcast. Low of 50F. Winds from the SSE at 10 to 15 mph.

  • Thursday

    Partly cloudy with a chance of a thunderstorm and rain. High of 73F. Winds from the South at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Thursday Night

    Partly cloudy. Low of 55F. Winds from the WSW at 5 to 10 mph.

  • Friday

    Clear. High of 73F. Winds from the WNW at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 48F. Winds from the North at 5 to 15 mph.

  • Saturday

    Clear. High of 72F. Winds from the NNE at 10 to 15 mph.

  • Saturday Night

    Partly cloudy. Low of 55F. Winds from the ENE at 5 to 10 mph.

  • Sunday

    Mostly cloudy. High of 72F. Winds from the ENE at 10 to 15 mph.

  • Sunday Night

    Partly cloudy. Low of 43F. Winds from the East at 5 to 10 mph.

  • Monday

    Mostly cloudy with a chance of a thunderstorm. High of 66F. Winds from the SE at 5 to 15 mph. Chance of rain 40%.

  • Monday Night

    Mostly cloudy. Low of 55F. Winds less than 5 mph.

  • Tuesday

    Mostly cloudy with a chance of rain. High of 70F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday Night

    Partly cloudy. Low of 55F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 70F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 55F. Winds less than 5 mph.

  • Thursday

    Clear. High of 72F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 55F. Winds from the NE at 5 to 10 mph shifting to the NNW after midnight.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Arnold, MO

Updated: 3:55 PM CDT

Temperature: 83.5 °F Dew Point: 49 °F Humidity: 30% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Arnold, Arnold, MO

Updated: 3:55 PM CDT

Temperature: 80.8 °F Dew Point: 43 °F Humidity: 26% Wind: SSE at 9.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 3:56 PM CDT

Temperature: 84.1 °F Dew Point: 44 °F Humidity: 25% Wind: SSE at 2.0 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Imperial, MO

Updated: 3:56 PM CDT

Temperature: 82.9 °F Dew Point: 50 °F Humidity: 32% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 3:56 PM CDT

Temperature: 80.9 °F Dew Point: 42 °F Humidity: 25% Wind: South at 8.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Imperial - Wellington Subdivision, Imperial, MO

Updated: 3:56 PM CDT

Temperature: 82.8 °F Dew Point: 46 °F Humidity: 28% Wind: SE at 5.8 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: MesoWest HLCRST MO US UPR, Saint Louis, MO

Updated: 3:00 PM CDT

Temperature: 85 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 3:56 PM CDT

Temperature: 87.1 °F Dew Point: -11 °F Humidity: 2% Wind: SSW at 2.7 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 3:56 PM CDT

Temperature: 81.9 °F Dew Point: 44 °F Humidity: 26% Wind: South at 5.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

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

Updated: 3:55 PM CDT

Temperature: 80.2 °F Dew Point: - Humidity: 24% Wind: SE at 5.0 mph Pressure: 29.42 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: San Luis Trails, Fenton, MO

Updated: 3:56 PM CDT

Temperature: 82.2 °F Dew Point: 36 °F Humidity: 19% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: APRSWXNET Mehlville MO US, Saint Louis, MO

Updated: 3:29 PM CDT

Temperature: 78 °F Dew Point: 48 °F Humidity: 35% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: MesoWest WARNK1 IL US UPR, Columbia, IL

Updated: 3:00 PM CDT

Temperature: 81 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 3:56 PM CDT

Temperature: 86.9 °F Dew Point: 49 °F Humidity: 27% Wind: SE at 6.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Sunset Hills, St Louis, MO

Updated: 3:41 PM CDT

Temperature: 81.1 °F Dew Point: 43 °F Humidity: 26% Wind: SE at 2.0 mph Pressure: 30.05 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: Radiom Dr, Affton, MO

Updated: 3:56 PM CDT

Temperature: 83.5 °F Dew Point: 41 °F Humidity: 22% Wind: SE at 1.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Crestwood, Crestwood, MO

Updated: 3:41 PM CDT

Temperature: 83.8 °F Dew Point: 46 °F Humidity: 27% Wind: SE at 5.3 mph Pressure: 29.78 in Hourly Precipitation: - Heat Index: 82 °F Graphs

Location: South County, Affton, MO

Updated: 3:56 PM CDT

Temperature: 80.5 °F Dew Point: 46 °F Humidity: 30% Wind: SSE at 9.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 3:56 PM CDT

Temperature: 83.1 °F Dew Point: 35 °F Humidity: 18% Wind: SE at 7.6 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Big Bend and I-270, Kirkwood, MO

Updated: 3:55 PM CDT

Temperature: 82.6 °F Dew Point: 43 °F Humidity: 25% Wind: SSW at 2.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Gedern Village, Columbia, IL

Updated: 3:54 PM CDT

Temperature: 81.5 °F Dew Point: 44 °F Humidity: 27% Wind: SW at 2.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Lake Lorraine, Hillsboro, MO

Updated: 3:50 PM CDT

Temperature: 81.8 °F Dew Point: 44 °F Humidity: 26% Wind: SW at 6.0 mph Pressure: 30.04 in Hourly Precipitation: - Heat Index: 80 °F Graphs

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

Updated: 3:52 PM CDT

Temperature: 85.5 °F Dew Point: 48 °F Humidity: 27% Wind: SSW at 3.2 mph Pressure: 30.04 in Hourly Precipitation: - Heat Index: 83 °F Graphs

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

Updated: 3:55 PM CDT

Temperature: 82.4 °F Dew Point: 43 °F Humidity: 25% Wind: ESE at 2.9 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 3:56 PM CDT

Temperature: 82.2 °F Dew Point: 40 °F Humidity: 22% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: AIRNow BROADWAY (South) MO MODNR, Saint Louis, MO

Updated: 1:00 PM CDT

Temperature: 77 °F Dew Point: 43 °F Humidity: 30% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Sandy Creek Winery, Pevely, MO

Updated: 3:52 PM CDT

Temperature: 83.4 °F Dew Point: 44 °F Humidity: 25% Wind: SW at 4.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Essex and Geyer, St. Louis, MO

Updated: 3:49 PM CDT

Temperature: 85.1 °F Dew Point: 46 °F Humidity: 26% Wind: East at 4.7 mph Pressure: 29.89 in Hourly Precipitation: - Heat Index: 83 °F Graphs

Location: Twin Oaks, Twin Oaks, MO

Updated: 3:47 PM CDT

Temperature: 83.7 °F Dew Point: 40 °F Humidity: 21% Wind: South at 5.8 mph Pressure: 29.95 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: Webster Groves, Webster Groves, MO

Updated: 3:55 PM CDT

Temperature: 81.3 °F Dew Point: 20 °F Humidity: 10% Wind: NE at 5.0 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Manchester, MO, Manchester, MO

Updated: 3:51 PM CDT

Temperature: 81.3 °F Dew Point: 44 °F Humidity: 27% Wind: SSE at 3.0 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Arbor Valley, Ballwin, MO

Updated: 3:56 PM CDT

Temperature: 83.3 °F Dew Point: 42 °F Humidity: 23% Wind: NW at 1.0 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 81 °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 
316 PM CDT sun Apr 20 2014 


Short term: (through monday) 
issued at 312 PM CDT sun Apr 20 2014 


Models continue to be a bit slower with onset of precipitation 
tonight. Will not see showers and a few thunderstorms til after 
midnight over central Missouri then slowly increase in coverage from 
west to east Monday morning. Surface based CAPES continue to be on 
the increase on Monday, between 500-1200 j/kg, so thunderstorms 
possible, though not expecting any severe weather at this time. 
Otherwise, mild conditions to persist with lows only in the mid to 
upper 50s tonight and highs on Monday will be in the low to mid 70s. 


Byrd 


Long term: (monday night through next sunday) 
issued at 312 PM CDT sun Apr 20 2014 


Cold front to slide through exiting forecast area by Monday evening, 
though some Post frontal precipitation not out of the question, so 
have chance pops Monday evening, then precipitation comes to an end. 
Not a lot of caa behind this system, so lows will be in the mid 40s 
to mid 50s Monday night. 


Surface ridge to build into region on Tuesday with dry and mild 
weather through midweek. Highs will be in the mid 60s to low 70s 
Tuesday and Wednesday with overnight lows in the 40s Tuesday night. 


Next weather system to move into region Wednesday night and persist 
through Thursday night. Best chances of showers and thunderstorms 
will be during the day on Thursday. Then dry weather to return for 
the first half of the weekend before next system moves in Saturday 
night and Sunday. As for temperatures through the period, expect 
upper 60s to mid 70s Thursday and Friday with highs in the low 60s 
to low 70s for Saturday and Sunday. 


Byrd 
&& 


Aviation: (for the 18z tafs through 18z Monday afternoon) 
issued at 1115 am CDT sun Apr 20 2014 


Just high level cloudiness this afternoon and this evening, then 
mid level clouds will spread into the area ahead of an approaching 
upper level disturbance late tonight. The cloud ceiling will 
continue to lower Monday morning, possibly into the MVFR category 
in cou. Showers and a few thunderstorms will also spread into uin 
and cou Monday morning, and into the St Louis Metro area Monday 
afternoon. Southerly winds will continue through tonight, possibly 
gusty at times this afternoon, then veer around to a southwesterly 
direction Monday morning as a cold front approaches. 


Specifics for kstl: high level cloudiness for this afternoon and 
this evening, then mid level clouds will spread into stl late 
tonight. The cloud ceiling will lower on Monday, possibly dropping 
into the MVFR category Monday afternoon. There may be some light 
showers in the stl area Monday morning, but the better threat of 
more widespread and significant showers and a few thunderstorms 
should occur Monday afternoon as an upper level disturbance moves 
through the area and a cold front approaches. Southerly winds will 
continue through tonight, possibly gusty at times this afternoon, 
then veer around to a southwesterly direction Monday morning. 


Gks 
&& 


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


$$ 
Weather forecast office lsx 










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