Arnold, Missouri Weather Conditions

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Current Conditions

  • 27°
  • Clear
  • Wind: Calm
  • Humidity: 85%
  • Visibility: 10.0 miles
  • Dew Point: 23°
  • Pressure: 30.22 in. 0

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Next 12 Hours

5  am
8  am
11  am
2  pm
5  pm
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Clear
Clear
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29°
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45°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Partly Cloudy
  • High: 47 °
  • Low: 31 °
  • Partly Cloudy
  • Sunday
  • Chance of Rain
  • High: 60 °
  • Low: 39 °
  • Chance of Rain
  • Monday
  • Clear
  • High: 66 °
  • Low: 45 °
  • Clear
  • Tuesday
  • Clear
  • High: 70 °
  • Low: 47 °
  • Clear
  • Wednesday
  • Partly Cloudy
  • High: 74 °
  • Low: 57 °
  • Partly Cloudy

Forecast for Arnold, Missouri

Updated: 1:14 AM CDT on January 28, 2015

  • Saturday

    Flurries or snow showers possible early. Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 47F. Winds E at 5 to 10 mph.

  • Saturday Night

    Clear skies. Low 31F. Winds SE at 5 to 10 mph.

  • Sunday

    Rain showers, with winds diminishing later in the day. Thunder possible. High near 60F. Winds SSW at 20 to 30 mph. Chance of rain 50%.

  • Sunday Night

    Some clouds early will give way to generally clear conditions overnight. Low 39F. Winds WNW at 10 to 15 mph.

  • Monday

    Sunshine and some clouds. High 66F. Winds WNW at 5 to 10 mph.

  • Monday Night

    Generally fair. Low near 45F. Winds light and variable.

  • Tuesday

    A mainly sunny sky. High around 70F. Winds WNW at 10 to 15 mph.

  • Tuesday Night

    Clear skies. Low 47F. Winds E at 5 to 10 mph.

  • Wednesday

    Sunshine and clouds mixed. High 74F. Winds SSE at 10 to 20 mph.

  • Wednesday Night

    Scattered showers and thunderstorms. Low 57F. Winds S at 10 to 15 mph. Chance of rain 40%.

  • Thursday

    Thunderstorms likely in the morning. Then the chance of scattered thunderstorms in the afternoon. High near 70F. Winds SSW at 10 to 15 mph. Chance of rain 80%.

  • Thursday Night

    Considerable cloudiness. Occasional rain showers later at night. Low 52F. Winds SSE at 5 to 10 mph. Chance of rain 40%.

  • Friday

    Showers early, becoming a steady rain later in the day. High 61F. Winds N at 10 to 15 mph. Chance of rain 70%. Rainfall around a quarter of an inch.

  • Friday Night

    Some clouds early will give way to generally clear conditions overnight. Low 41F. Winds NW at 10 to 15 mph.

  • Saturday

    Sunshine and clouds mixed. High 59F. Winds NNW at 10 to 20 mph.

  • Saturday Night

    A few clouds from time to time. Low near 40F. Winds E at 10 to 15 mph.

  • Sunday

    Some sun in the morning with increasing clouds during the afternoon. High 62F. Winds SSE at 10 to 20 mph.

  • Sunday Night

    Considerable cloudiness. Occasional rain showers later at night. Low 51F. Winds S at 10 to 15 mph. Chance of rain 40%.

  • Monday

    Mixed clouds and sun with scattered thunderstorms. High 66F. Winds S at 10 to 20 mph. Chance of rain 60%.

  • Monday Night

    Thunderstorms likely. Low 52F. Winds SSW at 10 to 15 mph. Chance of rain 80%.

  • Tuesday

    Variable clouds with scattered thunderstorms. High 67F. Winds WNW at 5 to 10 mph. Chance of rain 60%.

  • Tuesday Night

    A few clouds. Low 48F. Winds NNE at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Guardian Court, Arnold, MO

Updated: 4:15 AM CDT

Temperature: 27.0 °F Dew Point: 18 °F Humidity: 68% Wind: North at - Pressure: 30.17 in Hourly Precipitation: - Windchill: 27 °F Graphs

Location: Arnold # 1, Arnold, MO

Updated: 4:07 AM CDT

Temperature: 24.4 °F Dew Point: 19 °F Humidity: 80% Wind: Calm Pressure: 30.25 in Hourly Precipitation: - Windchill: 24 °F Graphs

Location: ARNOLD, Arnold, MO

Updated: 1:50 AM CDT

Temperature: 30.9 °F Dew Point: - Humidity: 59% Wind: North at - Pressure: 29.54 in Hourly Precipitation: - Windchill: 31 °F Graphs

Location: Arnold, MO

Updated: 4:07 AM CDT

Temperature: 24.6 °F Dew Point: 22 °F Humidity: 90% Wind: Calm Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 25 °F Graphs

Location: APRSWXNET Arnold MO US, Sulphur Springs, MO

Updated: 3:36 AM CDT

Temperature: 27 °F Dew Point: 20 °F Humidity: 76% Wind: Calm Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Arnold, Arnold, MO

Updated: 4:06 AM CDT

Temperature: 27.1 °F Dew Point: 21 °F Humidity: 78% Wind: Calm Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: summerfield, Imperial, MO

Updated: 4:18 AM CDT

Temperature: 21.6 °F Dew Point: 21 °F Humidity: 99% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: 22 °F Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 4:19 AM CDT

Temperature: 25.3 °F Dew Point: 14 °F Humidity: 61% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 25 °F Graphs

Location: Arrowhead STL County, Saint Louis, MO

Updated: 4:11 AM CDT

Temperature: 25.2 °F Dew Point: 16 °F Humidity: 69% Wind: Calm Pressure: 30.26 in Hourly Precipitation: - Windchill: 25 °F Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 4:19 AM CDT

Temperature: 28.0 °F Dew Point: 20 °F Humidity: 70% Wind: Calm Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 4:19 AM CDT

Temperature: 26.9 °F Dew Point: 20 °F Humidity: 74% Wind: Calm Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Christopher Winds, Oakville, MO

Updated: 4:19 AM CDT

Temperature: 28.9 °F Dew Point: 20 °F Humidity: 70% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Lakeview Ridge Drive, Fenton, MO

Updated: 4:15 AM CDT

Temperature: 28.9 °F Dew Point: 20 °F Humidity: 69% Wind: North at - Pressure: 30.23 in Hourly Precipitation: - Windchill: 29 °F Graphs

Location: Deerpath Acres Court, Saint Louis, MO

Updated: 4:15 AM CDT

Temperature: 26.2 °F Dew Point: 20 °F Humidity: 77% Wind: North at - Pressure: 30.20 in Hourly Precipitation: - Windchill: 26 °F Graphs

Location: Cathedral Drive, Saint Louis, MO

Updated: 4:15 AM CDT

Temperature: 31.1 °F Dew Point: 20 °F Humidity: 63% Wind: North at - Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 4:19 AM CDT

Temperature: 27.5 °F Dew Point: 18 °F Humidity: 66% Wind: ENE at 1.0 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: San Luis Trails, Fenton, MO

Updated: 4:19 AM CDT

Temperature: 25.8 °F Dew Point: 19 °F Humidity: 75% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 4:19 AM CDT

Temperature: 29.5 °F Dew Point: 16 °F Humidity: 58% Wind: NNE at 1.2 mph Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: St. Louis, MO

Updated: 4:19 AM CDT

Temperature: 27.7 °F Dew Point: 20 °F Humidity: 73% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: BUCKLEY MEADOWS 4, Saint Louis, MO

Updated: 4:05 AM CDT

Temperature: 27.7 °F Dew Point: 20 °F Humidity: 71% Wind: NNE at 1.7 mph Pressure: 29.97 in Hourly Precipitation: - Windchill: 28 °F Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 4:19 AM CDT

Temperature: 27.9 °F Dew Point: 20 °F Humidity: 73% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Bent Tree Trails, Fenton, MO

Updated: 4:08 AM CDT

Temperature: 26.1 °F Dew Point: 20 °F Humidity: 78% Wind: Calm Pressure: 29.90 in Hourly Precipitation: - Windchill: 26 °F Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 4:19 AM CDT

Temperature: 27.7 °F Dew Point: 15 °F Humidity: 58% Wind: East at 1.6 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Sunset Hills, St Louis, MO

Updated: 4:12 AM CDT

Temperature: 30.8 °F Dew Point: 19 °F Humidity: 63% Wind: Calm Pressure: 30.20 in Hourly Precipitation: - Windchill: 31 °F Graphs

Location: Crestwood, Crestwood, MO

Updated: 4:06 AM CDT

Temperature: 25.2 °F Dew Point: 20 °F Humidity: 82% Wind: Calm Pressure: 29.93 in Hourly Precipitation: - Windchill: 25 °F Graphs

Location: South County, Affton, MO

Updated: 4:19 AM CDT

Temperature: 29.2 °F Dew Point: 20 °F Humidity: 69% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: House Springs, House Springs, MO

Updated: 4:17 AM CDT

Temperature: 23.7 °F Dew Point: 21 °F Humidity: 88% Wind: Calm Pressure: 27.52 in Hourly Precipitation: 0.00 in Windchill: 24 °F Graphs

Location: Gedern Village, Columbia, IL

Updated: 4:17 AM CDT

Temperature: 27.7 °F Dew Point: 20 °F Humidity: 72% Wind: Calm Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Kirkwood, Kirkwood, MO

Updated: 4:19 AM CDT

Temperature: 28.2 °F Dew Point: 18 °F Humidity: 66% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Rosewood Korner, Waterloo, IL

Updated: 4:19 AM CDT

Temperature: 27.3 °F Dew Point: 19 °F Humidity: 71% Wind: ESE at 1.7 mph Pressure: 29.50 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

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

Updated: 4:06 AM CDT

Temperature: 28.9 °F Dew Point: 20 °F Humidity: 69% Wind: NE at 1.7 mph Pressure: 30.17 in Hourly Precipitation: - Windchill: 29 °F Graphs

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

Updated: 4:19 AM CDT

Temperature: 28.2 °F Dew Point: 18 °F Humidity: 66% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 4:19 AM CDT

Temperature: 24.7 °F Dew Point: 20 °F Humidity: 81% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: 25 °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 
355 am CDT Sat Mar 28 2015 


Short term: (through late this afternoon) 
issued at 352 am CDT Sat Mar 28 2015 


Focus this morning will be on the potential for accumulating snow... 
primarily across central MO. Widespread cloudiness has moved into 
the area overnight in advance of a short wave dropping southeast in the northwest 
flow. Not much sfc reflection to this feature with most of the 
forcing coming from the mid levels. Radar not at all impressive at 
0345 with just light returns showing up from wrn Iowa into cntrl MO 
with only a few stations even reporting precip. Models indicate that 
coverage/intensity should gradually increase 9z-12z as the precip 
continues to slide south-southeast. Guidance has shifted the precip axis a 
little further west now showing most of the quantitative precipitation forecast west of the County Warning Area so 
have attempted to tighten up the eastern edge of the going pop fcst. 
That being said...I still believe areas along and west of a Columbia 
to Jeff city line may still get a few tenths of an inch this morning 
before the system rapidly slips south of the area. It appears that 
most of the precip will be in eax and sgf cwas this mrng with the 
system just grazing our common border. Any threat of measurable 
precip should be well south of the forecast area by 18z. The rest of the day 
will feature seasonably cold temps in the 40s which is 10-15 
degrees below average. 


Miller 


Long term: (tonight through friday) 
issued at 352 am CDT Sat Mar 28 2015 


High pressure retreats to the east of the area tonight resulting in 
the onset of low level warm advection. The warm air advection combined with large 
scale ascent associated with a short wave digging through the 
northern plains is expected to produce a band/region of showers in 
advance of the next cold front. Present indications are the 
precipitation will remain just northwest of the County Warning Area through 
daybreak, centered from eastern Iowa into northwest MO. Developing 
southerly flow tonight and increasing clouds will help keep 
temperatures warmer than the chilly readings of early this morning. 
Strong low level warm air advection and ascent with the digging short wave will 
maintain a decent band/region of prefrontal showers spreading across 
the area on Sunday in advance of the front. Current thinking is that 
the increasing southerly flow will help push temperatures above 
freezing before the onset of rain during the morning from northeast 
MO into west central Illinois. Precipitation should have exited the County Warning Area 
by late afternoon with the cold front progressing across the area 
from the afternoon into the early evening. Weak surface high 
pressure dominates Sunday night into Monday in the wake of the 
front, with backing winds on Monday afternoon allowing temperatures 
to warm back towards normal levels. Rather non-descript conditions 
exist Tuesday into Wednesday as the flow aloft deamplifies and 
another weak boundary flirts with the area. Despite this boundary, 
warming low and mid levels should translate into warmer temperatures. 


Confidence in forecast details diminishes quite a bit during the 
later part of the week and beyond as there are some rather big 
differences in the flow aloft in the deterministic models. For 
late next week the main issue is the timing of a late week cold 
front and associated precipitation chances. 


Glass 


&& 


Aviation: (for the 06z tafs through 06z Saturday night) 
issued at 1156 PM CDT Fri Mar 27 2015 


Mid and high clouds have moved in ahead of shortwave which will 
slide through region through mid morning. Best chances of light snow 
will be over central MO and areas to the west, so kept mention in 
kcou taf between 09z and 14z Saturday with MVFR cigs/vsbys. Rest 
of taf sites to remain VFR through forecast period, though a few 
flurries not out of the question late tonight/early Saturday 
morning. As for winds, to veer to the east then southeast then to 
the south towards end of forecast period. 


Specifics for kstl: 
mid and high clouds have moved in ahead of shortwave which will 
slide through region through mid morning. Best chances of light snow 
will be over central MO and areas to the west. Metro area to 
remain VFR through forecast period, though a few flurries not out 
of the question late tonight/early Saturday morning. As for winds, 
to veer to the southeast then to the south after 04z Sunday. 


Byrd 


&& 


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


$$ 


Weather forecast office lsx 



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