Herculaneum, Missouri Weather Conditions

Your Weather

To update your location please enter your ZIP code, city, state, airport code or country in the field below. Weather by E-mail: Forecast storm alerts. Weather E-Mail Alert Sign Up »

Current Conditions

  • 68°
  • Clear
  • Wind: NNE 10 mph
  • Humidity: 43%
  • Visibility: 10.0 miles
  • Dew Point: 45°
  • Pressure: 30.11 in. 0

Select a Section

Click a section below for more information.

Next 12 Hours

4  pm
7  pm
10  pm
1  am
4  am
Clear
Clear
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Clear
Clear
64°
59°
52°
48°
43°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Clear
  • High: 68 °
  • Low: 41 °
  • Clear
  • Wednesday
  • Clear
  • High: 61 °
  • Low: 45 °
  • Clear
  • Thursday
  • Chance of Rain
  • High: 64 °
  • Low: 52 °
  • Chance of Rain
  • Friday
  • Partly Cloudy
  • High: 73 °
  • Low: 54 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 75 °
  • Low: 54 °
  • Partly Cloudy

Forecast for Herculaneum, Missouri

Updated: 4:00 PM CDT on October 21, 2014

  • Tuesday

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

  • Tuesday Night

    Clear in the evening, then partly cloudy. Low of 41F. Winds from the NE at 5 to 10 mph.

  • Wednesday

    Clear. High of 61F. Winds from the North at 5 to 10 mph shifting to the ESE in the afternoon.

  • Wednesday Night

    Clear. Low of 45F. Winds less than 5 mph.

  • Thursday

    Partly cloudy with a chance of rain in the afternoon. High of 64F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy. Fog overnight. Low of 52F. Winds from the SW at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 73F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Fog overnight. Low of 54F. Winds from the SW at 5 to 10 mph.

  • Saturday

    Partly cloudy. Fog early. High of 75F. Winds from the NW at 5 to 10 mph.

  • Saturday Night

    Partly cloudy. Low of 54F. Winds less than 5 mph.

  • Sunday

    Clear. High of 81F. Winds from the SSE at 5 to 15 mph.

  • Sunday Night

    Partly cloudy. Fog overnight. Low of 54F. Winds from the South at 10 to 15 mph.

  • Monday

    Mostly cloudy. High of 75F. Breezy. Winds from the South at 15 to 20 mph.

  • Monday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 52F. Winds from the South at 10 to 15 mph. Chance of rain 30%.

  • Tuesday

    Mostly cloudy with a chance of rain. High of 66F. Breezy. Winds from the WNW at 10 to 20 mph. Chance of rain 40%.

  • Tuesday Night

    Clear. Low of 46F. Winds from the NW at 5 to 10 mph.

  • Wednesday

    Clear. High of 61F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 46F. Winds less than 5 mph.

  • Thursday

    Clear. Fog early. High of 61F. Winds less than 5 mph.

  • Thursday Night

    Clear. Fog overnight. Low of 46F. Winds less than 5 mph.

  • Friday

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

  • Friday Night

    Partly cloudy. Fog overnight. Low of 48F. Winds from the South at 5 to 10 mph.

  • Saturday

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

  • Saturday Night

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

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Herculaneum, Mott Street, Herculaneum, MO

Updated: 4:20 PM CDT

Temperature: 67.6 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.68 in Hourly Precipitation: - Heat Index: - Graphs

Location: MesoWest MAEYS1 IL US UPR, Maeystown, IL

Updated: 3:05 PM CDT

Temperature: 64 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 4:29 PM CDT

Temperature: 66.6 °F Dew Point: 47 °F Humidity: 49% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: summerfield, Imperial, MO

Updated: 4:29 PM CDT

Temperature: 69.3 °F Dew Point: 47 °F Humidity: 45% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 4:28 PM CDT

Temperature: 64.9 °F Dew Point: 44 °F Humidity: 46% Wind: West at 5.4 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Arnold, MO

Updated: 4:17 PM CDT

Temperature: 65.3 °F Dew Point: 51 °F Humidity: 61% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Arnold, Arnold, MO

Updated: 4:29 PM CDT

Temperature: 65.8 °F Dew Point: 49 °F Humidity: 54% Wind: NW at 2.0 mph Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: ARNOLD, Arnold, MO

Updated: 4:20 PM CDT

Temperature: 66.7 °F Dew Point: - Humidity: 42% Wind: North at - Pressure: 29.41 in Hourly Precipitation: - Heat Index: - Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 4:29 PM CDT

Temperature: 65.7 °F Dew Point: 42 °F Humidity: 42% Wind: NNE at 6.0 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Christopher Winds, Oakville, MO

Updated: 4:29 PM CDT

Temperature: 65.5 °F Dew Point: 47 °F Humidity: 52% Wind: North at 1.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 4:29 PM CDT

Temperature: 64.1 °F Dew Point: 46 °F Humidity: 52% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hardy Acres / AA9UC, Waterloo, IL

Updated: 4:29 PM CDT

Temperature: 63.3 °F Dew Point: 44 °F Humidity: 50% Wind: NE at 3.3 mph Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 4:29 PM CDT

Temperature: 65.0 °F Dew Point: 48 °F Humidity: 55% Wind: NE at 4.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 4:25 PM CDT

Temperature: 67.5 °F Dew Point: 49 °F Humidity: 51% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ste Genevieve county, Festus, MO

Updated: 4:26 PM CDT

Temperature: 65.8 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 4:29 PM CDT

Temperature: 69.8 °F Dew Point: 47 °F Humidity: 44% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 4:29 PM CDT

Temperature: 68.5 °F Dew Point: 44 °F Humidity: 41% Wind: North at 6.0 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 4:21 PM CDT

Temperature: 66.9 °F Dew Point: 45 °F Humidity: 45% Wind: NW at 5.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Gedern Village, Columbia, IL

Updated: 4:29 PM CDT

Temperature: 66.6 °F Dew Point: 46 °F Humidity: 47% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest I-255 / IL-3 @ Columbia IL US ILDOT, Columbia, IL

Updated: 3:55 PM CDT

Temperature: 67 °F Dew Point: 44 °F Humidity: 44% Wind: North at 11 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 4:29 PM CDT

Temperature: 65.8 °F Dew Point: 44 °F Humidity: 46% Wind: NNW at 9.6 mph Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: San Luis Trails, Fenton, MO

Updated: 4:29 PM CDT

Temperature: 66.3 °F Dew Point: 44 °F Humidity: 44% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 4:25 PM CDT

Temperature: 66.2 °F Dew Point: - Humidity: 48% Wind: ENE at 2.0 mph Pressure: 29.43 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 4:29 PM CDT

Temperature: 71.1 °F Dew Point: 51 °F Humidity: 49% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: St. Joseph Hill, Pacific, MO

Updated: 4:27 PM CDT

Temperature: 68.6 °F Dew Point: 49 °F Humidity: 49% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: St. Louis, MO

Updated: 4:29 PM CDT

Temperature: 67.1 °F Dew Point: 47 °F Humidity: 48% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 4:20 PM CDT

Temperature: 66.7 °F Dew Point: 49 °F Humidity: 52% Wind: SE at 2.2 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: South County, Affton, MO

Updated: 4:29 PM CDT

Temperature: 65.9 °F Dew Point: 48 °F Humidity: 53% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: K0GDI, Blackwell, MO

Updated: 4:15 PM CDT

Temperature: 68.7 °F Dew Point: 48 °F Humidity: 47% Wind: NNE at 2.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: BROADWAY (South), St. Louis, MO

Updated: 4:20 PM CDT

Temperature: 68.2 °F Dew Point: - Humidity: 39% Wind: North at - Pressure: 29.52 in Hourly Precipitation: - Heat Index: - Graphs

Location: Sunset Hills, St Louis, MO

Updated: 4:28 PM CDT

Temperature: 65.6 °F Dew Point: 47 °F Humidity: 51% Wind: Calm Pressure: 30.09 in Hourly Precipitation: - Heat Index: - Graphs

Location: Crestwood, Crestwood, MO

Updated: 4:15 PM CDT

Temperature: 68.4 °F Dew Point: 50 °F Humidity: 52% Wind: NW at 1.1 mph Pressure: 29.81 in Hourly Precipitation: - Heat Index: - Graphs

Location: MesoWest KIDD1 IL US UPR, Prairie Du Rocher, IL

Updated: 3:25 PM CDT

Temperature: 64 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 4:25 PM CDT

Temperature: 67.8 °F Dew Point: 48 °F Humidity: 50% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service St Louis MO 
331 PM CDT Tue Oct 21 2014 


Short term: (through late tonight) 
issued at 327 PM CDT Tue Oct 21 2014 


Surface ridge extending from Wisconsin south-southwest through the 
Mississippi Valley into the southeast plains will drift to the 
southeast tonight. The upper level ridge will continue to build 
overhead keeping the sky clear. Expect light and variable surface 
wind this evening to turn to the east southeast overnight as the 
surface ridge drifts by. With good radiational cooling conditions 
for at least part of the night, expect temperatures to dip down to 
near or slightly below this morning's lows. Used a combination of 
consensus MOS and mav for forecast lows tomorrow morning. 


Carney 


Long term: (wednesday through next tuesday) 
issued at 327 PM CDT Tue Oct 21 2014 


(wednesday through friday) 


Dry weather is expected through Wednesday evening as a upper ridge 
currently over the plains will move across the area. Then will 
continue a slight chance for showers late on Wednesday night over 
northeast and central Missouri as well as west central Illinois as 
the GFS/NAM/ECMWF are all in good agreement that a upper trough will 
approach the area. This trough will move quickly across the area on 
Thursday, though moisture will be limited with this system, so have 
kept rain chances associated with this system in area mainly north 
of I-70 where best ascent will be. Then subsidence will begin to 
build into the area behind the trough, so expect dry weather to 
return to the area for Thursday night and Friday. 


Went toward the warmer GFS MOS for highs the next few days which 
matches well with mixing down 900mb temperatures. 


(Saturday through next tuesday) 


Weekend still looks dry and warm for late October as both the GFS 
and European model (ecmwf) showing a large upper ridge building over the area. 850mb 
temperatures will climb to near 15c as surface winds become 
southerly by Sunday. Both the GFS and European model (ecmwf) MOS guidance support 
high temperatures well into the 70s Saturday into Monday. By early 
next week, the latest runs of the GFS/European model (ecmwf) are in good agreement 
that a large trough will be moving through the plains into the 
Midwest with the attendant cold front reaching Missouri and 
Illinois by Monday night. Will carry just low chances for showers 
as there have been run-to-run model continuity issues which will 
ultimately determine the timing of the rain early next week. 


Britt 


&& 


Aviation: (for the 18z tafs through 18z Wednesday afternoon) 
issued at 1245 PM CDT Tue Oct 21 2014 


Surface ridge centered north of Lake Superior extending south 
through the Mississippi Valley will drift south-southeast through 
Wednesday. VFR conditions will prevail with River Valley fog 
possible late tonight and Wednesday morning. Wind will gradually 
veer from the north-northeast to to the east-southeast by 
Wednesday afternoon. 


Specifics for kstl: 


Surface ridge centered north of Lake Superior extending south 
through the Mississippi Valley will drift south-southeast through 
Wednesday. VFR conditions will continue to prevail. Wind will 
gradually veer from the north-northeast to to the east-southeast 
by Wednesday afternoon. 


Carney 


&& 


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


$$ 


Weather forecast office lsx 












National Weather Service Glossary of Abbreviations

Non-Expanded Version (with abbreviations)

Powered by the Weather Underground, Inc.