Herculaneum, Missouri Weather Conditions

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Current Conditions

  • 63°
  • Clear
  • Wind: East 6 mph
  • Humidity: 50%
  • Visibility: 10.0 miles
  • Dew Point: 44°
  • Pressure: 30.21 in. 0

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Next 12 Hours

10  pm
1  am
4  am
7  am
10  am
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
55°
54°
52°
43°
61°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Clear
  • High: 73 °
  • Low: 48 °
  • Clear
  • Sunday
  • Partly Cloudy
  • High: 77 °
  • Low: 57 °
  • Partly Cloudy
  • Monday
  • Chance of a Thunderstorm
  • High: 73 °
  • Low: 52 °
  • Chance of T-Storms
  • Tuesday
  • Clear
  • High: 70 °
  • Low: 41 °
  • Clear
  • Wednesday
  • Clear
  • High: 64 °
  • Low: 48 °
  • Clear

Forecast for Herculaneum, Missouri

Updated: 10:00 PM CDT on April 18, 2014

  • Friday

    Partly cloudy in the morning, then clear. High of 72F. Winds from the NNE at 5 to 10 mph.

  • Friday Night

    Clear. Low of 43F. Winds less than 5 mph.

  • Saturday

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

  • Saturday Night

    Clear. Low of 48F. Winds from the SE at 5 to 10 mph.

  • Sunday

    Partly cloudy. High of 77F. Winds from the SSE at 5 to 10 mph.

  • Sunday Night

    Partly cloudy with a chance of rain after midnight. Low of 57F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Monday

    Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 73F. Winds from the SW at 5 to 10 mph. Chance of rain 50%.

  • Monday Night

    Clear with a chance of a thunderstorm and rain. Low of 52F. Winds from the WNW at 5 to 10 mph. Chance of rain 30% with rainfall amounts near 0.2 in. possible.

  • Tuesday

    Clear. High of 70F. Winds from the NW at 10 to 15 mph.

  • Tuesday Night

    Clear. Low of 41F. Winds from the North at 5 to 10 mph.

  • Wednesday

    Clear. High of 64F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 48F. Winds from the SE at 10 to 15 mph.

  • Thursday

    Partly cloudy. High of 70F. Winds from the SSE at 10 to 15 mph.

  • Thursday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds from the South at 10 to 15 mph. Chance of rain 50% with rainfall amounts near 0.3 in. possible.

  • Friday

    Partly cloudy. High of 72F. Winds from the WSW at 5 to 15 mph.

  • Friday Night

    Clear. Low of 48F. Winds from the NW at 5 to 15 mph.

  • Saturday

    Clear. High of 66F. Winds from the WNW at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 39F. Winds less than 5 mph.

  • Sunday

    Clear. High of 63F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 48F. Winds less than 5 mph.

  • Monday

    Partly cloudy. High of 64F. Winds less than 5 mph.

  • Monday Night

    Partly cloudy. Low of 50F. Winds from the SSE at 5 to 10 mph.

  • Tuesday

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

  • Tuesday Night

    Clear. Fog overnight. Low of 50F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Sandy Creek Winery, Pevely, MO

Updated: 8:46 PM CDT

Temperature: 55.7 °F Dew Point: 45 °F Humidity: 67% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Graphs

Location: Imperial - Wellington Subdivision, Imperial, MO

Updated: 8:47 PM CDT

Temperature: 60.8 °F Dew Point: 46 °F Humidity: 57% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 8:47 PM CDT

Temperature: 56.0 °F Dew Point: 43 °F Humidity: 62% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Graphs

Location: Lake Lorraine, Hillsboro, MO

Updated: 8:45 PM CDT

Temperature: 59.1 °F Dew Point: 45 °F Humidity: 59% Wind: Calm Pressure: 30.20 in Hourly Precipitation: - Graphs

Location: Imperial, MO

Updated: 8:47 PM CDT

Temperature: 61.9 °F Dew Point: 42 °F Humidity: 48% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest WARNK1 IL US UPR, Columbia, IL

Updated: 8:00 PM CDT

Temperature: 68 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Graphs

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

Updated: 8:00 PM CDT

Temperature: 68 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 8:46 PM CDT

Temperature: 61.7 °F Dew Point: 38 °F Humidity: 41% Wind: ENE at 3.1 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 8:47 PM CDT

Temperature: 59.4 °F Dew Point: 37 °F Humidity: 43% Wind: East at 1.6 mph Pressure: 30.24 in Hourly Precipitation: - Graphs

Location: Arnold, MO

Updated: 8:35 PM CDT

Temperature: 61.7 °F Dew Point: 47 °F Humidity: 58% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Graphs

Location: Arnold, Arnold, MO

Updated: 8:47 PM CDT

Temperature: 60.8 °F Dew Point: 44 °F Humidity: 53% Wind: Calm Pressure: 30.19 in Hourly Precipitation: 0.00 in Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 8:47 PM CDT

Temperature: 57.0 °F Dew Point: 35 °F Humidity: 43% Wind: West at 1.6 mph Pressure: 30.36 in Hourly Precipitation: 0.00 in Graphs

Location: Hardy Acres / AA9UC, Waterloo, IL

Updated: 8:46 PM CDT

Temperature: 61.8 °F Dew Point: 35 °F Humidity: 37% Wind: North at - Pressure: 30.24 in Hourly Precipitation: 0.00 in Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 8:47 PM CDT

Temperature: 58.7 °F Dew Point: 44 °F Humidity: 59% Wind: Calm Pressure: 30.20 in Hourly Precipitation: 0.00 in Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 8:46 PM CDT

Temperature: 57.9 °F Dew Point: 45 °F Humidity: 62% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Graphs

Location: Ste Genevieve county, Festus, MO

Updated: 8:46 PM CDT

Temperature: 55.5 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 8:47 PM CDT

Temperature: 61.3 °F Dew Point: 43 °F Humidity: 51% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 8:47 PM CDT

Temperature: 63.3 °F Dew Point: 40 °F Humidity: 42% Wind: East at 2.2 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Graphs

Location: Devall's Backyard, Waterloo, IL

Updated: 8:32 PM CDT

Temperature: 59.8 °F Dew Point: 42 °F Humidity: 52% Wind: Calm Pressure: 30.23 in Hourly Precipitation: - Graphs

Location: Gedern Village, Columbia, IL

Updated: 8:47 PM CDT

Temperature: 58.5 °F Dew Point: 44 °F Humidity: 58% Wind: Calm Pressure: 30.23 in Hourly Precipitation: 0.00 in Graphs

Location: APRSWXNET Mehlville MO US, Saint Louis, MO

Updated: 7:19 PM CDT

Temperature: 65 °F Dew Point: 45 °F Humidity: 48% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Graphs

Location: San Luis Trails, Fenton, MO

Updated: 8:47 PM CDT

Temperature: 62.4 °F Dew Point: 40 °F Humidity: 43% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 8:45 PM CDT

Temperature: 66.2 °F Dew Point: - Humidity: 41% Wind: SSE at 2.0 mph Pressure: 29.55 in Hourly Precipitation: 0.00 in Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 8:47 PM CDT

Temperature: 62.4 °F Dew Point: 44 °F Humidity: 50% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Graphs

Location: St. Joseph Hill, Pacific, MO

Updated: 8:42 PM CDT

Temperature: 56.0 °F Dew Point: 43 °F Humidity: 63% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Graphs

Location: Radiom Dr, Affton, MO

Updated: 8:47 PM CDT

Temperature: 58.6 °F Dew Point: 44 °F Humidity: 59% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 8:39 PM CDT

Temperature: 54.7 °F Dew Point: 47 °F Humidity: 75% Wind: NE at 1.6 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

Location: South County, Affton, MO

Updated: 8:47 PM CDT

Temperature: 62.8 °F Dew Point: 46 °F Humidity: 54% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Graphs

Location: K0GDI, Blackwell, MO

Updated: 8:47 PM CDT

Temperature: 60.1 °F Dew Point: 43 °F Humidity: 53% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: Sunset Hills, St Louis, MO

Updated: 8:42 PM CDT

Temperature: 64.6 °F Dew Point: 44 °F Humidity: 47% Wind: Calm Pressure: 30.20 in Hourly Precipitation: - Graphs

Location: Crestwood, Crestwood, MO

Updated: 8:37 PM CDT

Temperature: 58.6 °F Dew Point: 46 °F Humidity: 64% Wind: Calm Pressure: 29.92 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 
636 PM CDT Fri Apr 18 2014 


Short term: (through late tonight) 
issued at 303 PM CDT Fri Apr 18 2014 


Dry and tranquil weather will be the rule tonight. High pressure 
centered in Ontario and extending into the Southern Plains will 
slowly retreat to the east, prompting light winds and clear skies. 
Low temperatures will be seasonable for mid April. 


Glass 


Long term: (saturday through next friday) 
issued at 303 PM CDT Fri Apr 18 2014 


Warmer and dry weather Saturday through Sunday. An upper level 
ridge will extend from eastern Texas northeast into MO and Illinois on 
Saturday with a surface ridge extending from the Great Lakes region 
southwest into eastern MO. Temperatures will easily warm into the 
lower to middle 70s on Saturday with full sunshine. Cloud cover 
should increase late Saturday night into Sunday as weak shortwaves 
move northeastward through the region ahead of the main mid-upper 
level trough over the plains. Low level moisture will also increase 
as surface/low level flow becomes southerly. Showers and a few 
thunderstorms should spread into at least the northwestern half of 
our forecast area, north and west of stl Sunday night as the mid 
level trough and cold front approaches our area with increasing 
low-mid level moisture and instability. The best chance of rain for 
most of our area will occur on Monday as the mid level trough and 
cold front moves east southeastward through our forecast area. Most 
of the showers should shift southeast of our forecast area by late 
Monday night as the cold front also shifts southeast of the region. 
The GFS model appears colder for Monday night and Tuesday with a 
relatively deep upper level trough/low moving southeastward through 
the Great Lakes region with a large surface ridge building 
southeastward into our area behind the cold front. The European model (ecmwf) model 
is not quite as far south with this upper level trough/low and not 
quite as cold with its 850 mb temperatures in our area. A warming 
trend should begin on Wednesday as an upper level ridge moves 
eastward through the region, and strengthening southerly low level 
winds bring warmer 850 mb temperatures northeastward into our area. 
Convection may return as early as Wednesday across northeast MO and 
west central Illinois due to relatively strong low-mid level warm air 
advection ahead of weak shortwaves moving through the upper level 
ridge. The threat for convection will increase Wednesday night and 
Thursday, at least over the northwest half of our forecast area, as 
the upper level ridge shifts east of the region while a deep upper 
level low moves eastward through the northern plains, along with 
continued low-mid level warm air advection ahead of weak SW flow 
shortwaves moving through our region. The GFS model depicts a band 
or line of convection moving eastward through our forecast area 
Thursday night as a surface low moves into the Great Lakes region 
and drags a trailing cold front through our area. The European model (ecmwf) model 
is about 6 hours quicker with this front and its associated 
convection. Cooler air should filter southeastward into our area on 
Friday. 


Gks 
&& 


Aviation: (for the 00z tafs through 00z Saturday evening) 
issued at 635 PM CDT Fri Apr 18 2014 


Surface ridge overhead with light winds and clear skies. Could see 
some radiational fog along River Valley areas, so kept mention in 
ksus taf for late tonight. Otherwise, winds to pickup a bit by mid 
morning on Saturday from the southeast to south under clear skies for 
rest of forecast period. 


Specifics for kstl: 
surface ridge overhead with light winds and clear skies. Otherwise, 
winds to pickup a bit by 15z Saturday from the southeast under 
clear skies for rest of forecast period. 


Byrd 
&& 


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


$$ 
Weather forecast office lsx 










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