Herculaneum, Missouri Weather Conditions

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Current Conditions

  • 76°
  • Clear
  • Wind: ESE 8 mph
  • Humidity: 37%
  • Visibility: 10.0 miles
  • Dew Point: 48°
  • Pressure: 30.22 in. -

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Next 12 Hours

4  pm
7  pm
10  pm
1  am
4  am
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
73°
68°
59°
55°
52°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Partly Cloudy
  • High: 76 °
  • Low: 48 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 75 °
  • Low: 54 °
  • Partly Cloudy
  • Thursday
  • Partly Cloudy
  • High: 81 °
  • Low: 54 °
  • Partly Cloudy
  • Friday
  • Clear
  • High: 81 °
  • Low: 54 °
  • Clear
  • Saturday
  • Clear
  • High: 81 °
  • Low: 52 °
  • Clear

Forecast for Herculaneum, Missouri

Updated: 4:00 PM CDT on September 23, 2014

  • Tuesday

    Partly cloudy. Fog early. High of 73F. Winds from the ESE at 5 to 10 mph.

  • Tuesday Night

    Clear in the evening, then partly cloudy. Low of 48F. Winds less than 5 mph.

  • Wednesday

    Partly cloudy in the morning, then overcast. High of 75F. Winds less than 5 mph.

  • Wednesday Night

    Clear in the evening, then partly cloudy. Low of 54F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 81F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 54F. Winds from the SSE at 5 to 10 mph.

  • Friday

    Clear. High of 81F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 54F. Winds less than 5 mph.

  • Saturday

    Clear in the morning, then partly cloudy. High of 81F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Low of 52F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 81F. Winds less than 5 mph.

  • Sunday Night

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

  • Monday

    Clear. High of 82F. Winds less than 5 mph.

  • Monday Night

    Partly cloudy. Low of 59F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 81F. Winds less than 5 mph.

  • Tuesday Night

    Mostly cloudy. Low of 63F. Winds from the SE at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High of 81F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 63F. Winds less than 5 mph.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 77F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Clear. Fog overnight. Low of 59F. Winds less than 5 mph.

  • Friday

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

  • Friday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 55F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Clear with a chance of a thunderstorm. High of 68F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday Night

    Clear. Low of 55F. Winds from the North at 10 to 15 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Herculaneum, Mott Street, Herculaneum, MO

Updated: 5:20 PM CDT

Temperature: 75.7 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.81 in Hourly Precipitation: - Heat Index: - Graphs

Location: Sandy Creek Winery, Pevely, MO

Updated: 5:13 PM CDT

Temperature: 76.2 °F Dew Point: 51 °F Humidity: 41% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: MesoWest MAEYS1 IL US UPR, Maeystown, IL

Updated: 4:25 PM CDT

Temperature: 73 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Imperial - Wellington Subdivision, Imperial, MO

Updated: 5:23 PM CDT

Temperature: 75.1 °F Dew Point: 52 °F Humidity: 44% Wind: SSE at 3.5 mph Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 5:23 PM CDT

Temperature: 73.7 °F Dew Point: 52 °F Humidity: 47% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: summerfield, Imperial, MO

Updated: 5:23 PM CDT

Temperature: 75.0 °F Dew Point: 52 °F Humidity: 44% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Imperial, MO

Updated: 5:23 PM CDT

Temperature: 74.8 °F Dew Point: 57 °F Humidity: 53% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Arnold, MO

Updated: 5:11 PM CDT

Temperature: 72.4 °F Dew Point: 57 °F Humidity: 59% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Arnold, Arnold, MO

Updated: 4:57 PM CDT

Temperature: 73.3 °F Dew Point: 53 °F Humidity: 50% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: ARNOLD, Arnold, MO

Updated: 5:20 PM CDT

Temperature: 74.7 °F Dew Point: - Humidity: 33% Wind: North at - Pressure: 29.51 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 3:28 PM CDT

Temperature: 74.3 °F Dew Point: 46 °F Humidity: 36% Wind: WSW at 1.1 mph Pressure: 30.36 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Christopher Winds, Oakville, MO

Updated: 5:23 PM CDT

Temperature: 73.1 °F Dew Point: 49 °F Humidity: 43% Wind: ESE at 1.0 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 5:23 PM CDT

Temperature: 71.9 °F Dew Point: 52 °F Humidity: 49% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Hardy Acres / AA9UC, Waterloo, IL

Updated: 5:22 PM CDT

Temperature: 70.3 °F Dew Point: 32 °F Humidity: 24% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 5:23 PM CDT

Temperature: 73.0 °F Dew Point: 50 °F Humidity: 45% Wind: ESE at 2.0 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 5:20 PM CDT

Temperature: 73.6 °F Dew Point: 52 °F Humidity: 46% Wind: Calm Pressure: 30.23 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Ste Genevieve county, Festus, MO

Updated: 5:21 PM CDT

Temperature: 69.8 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 5:23 PM CDT

Temperature: 73.8 °F Dew Point: 49 °F Humidity: 41% Wind: South at 5.0 mph Pressure: 30.23 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 5:23 PM CDT

Temperature: 74.8 °F Dew Point: 50 °F Humidity: 41% Wind: NE at 6.0 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Devall's Backyard, Waterloo, IL

Updated: 4:18 PM CDT

Temperature: 78.1 °F Dew Point: 50 °F Humidity: 37% Wind: North at 2.6 mph Pressure: 30.24 in Hourly Precipitation: - Heat Index: 79 °F Graphs

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

Updated: 5:09 PM CDT

Temperature: 74.0 °F Dew Point: 50 °F Humidity: 43% Wind: ESE at 7.0 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Gedern Village, Columbia, IL

Updated: 5:22 PM CDT

Temperature: 73.9 °F Dew Point: 51 °F Humidity: 44% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: APRSWXNET Mehlville MO US, Saint Louis, MO

Updated: 3:28 PM CDT

Temperature: 71 °F Dew Point: 54 °F Humidity: 55% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: San Luis Trails, Fenton, MO

Updated: 5:23 PM CDT

Temperature: 71.8 °F Dew Point: 48 °F Humidity: 43% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 5:20 PM CDT

Temperature: 73.9 °F Dew Point: - Humidity: 40% Wind: East at 2.0 mph Pressure: 29.55 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 5:23 PM CDT

Temperature: 76.5 °F Dew Point: 54 °F Humidity: 45% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: St. Joseph Hill, Pacific, MO

Updated: 5:20 PM CDT

Temperature: 75.3 °F Dew Point: 53 °F Humidity: 46% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: St. Louis, MO

Updated: 5:23 PM CDT

Temperature: 73.9 °F Dew Point: 53 °F Humidity: 48% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: South County, Affton, MO

Updated: 5:23 PM CDT

Temperature: 74.3 °F Dew Point: 54 °F Humidity: 50% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: K0GDI, Blackwell, MO

Updated: 5:15 PM CDT

Temperature: 71.0 °F Dew Point: 55 °F Humidity: 57% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

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

Updated: 5:20 PM CDT

Temperature: 76.1 °F Dew Point: - Humidity: 32% Wind: North at - Pressure: 29.63 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Sunset Hills, St Louis, MO

Updated: 5:13 PM CDT

Temperature: 72.9 °F Dew Point: 51 °F Humidity: 46% Wind: Calm Pressure: 30.20 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Crestwood, Crestwood, MO

Updated: 5:11 PM CDT

Temperature: 74.5 °F Dew Point: 51 °F Humidity: 44% Wind: East at 2.2 mph Pressure: 29.93 in Hourly Precipitation: - Heat Index: 77 °F Graphs

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

Updated: 5:19 PM CDT

Temperature: 72.7 °F Dew Point: 51 °F Humidity: 46% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Millstadt, Millstadt, IL

Updated: 5:23 PM CDT

Temperature: 77.4 °F Dew Point: 60 °F Humidity: 55% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: 79 °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 
334 PM CDT Tue Sep 23 2014 


Short term: (through late tonight) 
issued at 333 PM CDT Tue Sep 23 2014 




(tonight) 


Upper-level low and attendant trough axis currently across the Dakotas is 
forecast to slowly move eastward overnight tonight. Not much impact is 
expected for our County warning forecast area other than an increase in clouds for portions of 
central and northeastern Missouri. Showers with embedded thunder should 
stay to the west of the area in close proximity to aforementioned trough. 
For lows tonight...started with this morning's observed mins as a baseline 
and added a few degrees due to airmass modification. Leaned a bit warmer 
across the northwestern third of the area due to expected clouds. 
Conversely...leaned toward cooler guidance for Eastern Ozarks and portions 
of southwest Illinois due to light winds near sfc ridge and a mostly clear 
sky. All in all...another pleasant early fall night looks to be in store 
for the bi-state region with lows ranging from the mid 40s to the mid 50s. 




Gosselin 




Long term: (wednesday through next tuesday) 
issued at 333 PM CDT Tue Sep 23 2014 




(wednesday - saturday) 


Mid/upper level pattern through at least the start of this upcoming 
weekend looks nebulous/chaotic. Short to medium range guidance agree 
that at least a portion of the trough across the northern plains will 
halt its eastward progression sometime Wednesday or Wednesday night 
and begin to retrograde southwestward. Impacts of this feature will still 
likely be minor and in the form of increasing clouds. However...would not 
be surprised if a few showers is kicked up by the remnant midlevel low/ 
shear axis. Models are fairly bearish on precipitation..but some do have 
a few hundreths of an inch over random 6-hr blocks of time. Conceptually... 
a few widely scattered/isolated showers does make sense beneath cooler 
midlevel temps aloft. However...with low-level ridging remaining entrenched 
across the area collocated with very dry air...still maintaining a dry 
forecast through Saturday at this time. Main theme in the Wednesday through 
Saturday forecast period will be seasonably warm temperatures day/night 
with highs in the upper 70s/low 80s and overnight lows in the 50s to low 
60s...or around 5 degrees above normal for late September. 




(Sunday - tuesday) 


GFS/European model (ecmwf) models diverge fairly quickly late this weekend with how to 
handle cutoff low/shear axis. The GFS actually moves the low southeastward 
on Sunday and phases it with a low across southeast Texas. The European model (ecmwf) 
on the other hand retrogrades the low westward toward the mid-Missouri 
Valley and brings the system northward from Texas much faster and 
further northward when compared with the GFS. Needless to say...quite 
a bit of uncertainty in the extended. If system does indeed stream 
northward out of Texas...chances of showers and a few storms will return 
to at least portions of the region...most likely across southeast Missouri 
and southwest Illinois. However...outside of that particular system... 
rain chances will remain very low. Temperatures will remain mild for late 
September and continue to be above normal. 




Gosselin 




&& 


Aviation: (for the 18z tafs through 18z Wednesday afternoon) 
issued at 117 PM CDT Tue Sep 23 2014 


Surface ridge just to east of forecast area, so winds have become 
southeasterly. VFR conditions to persist through forecast period 
with southeast to south winds becoming light and variable most 
locations after sunset. 


Specifics for kstl: 
surface ridge just to east of forecast area, so winds have become 
southeasterly. VFR conditions to persist through forecast period 
with southeast winds becoming light and variable after 00z Wednesday. 


Byrd 


&& 


Preliminary point temperatures/pops: 
Saint Louis 55 79 60 81 / 0 0 5 5 
Quincy 52 76 55 79 / 5 10 5 10 
Columbia 53 78 55 80 / 5 5 10 10 
Jefferson City 50 79 54 81 / 5 5 5 10 
Salem 47 77 50 80 / 0 0 0 5 
Farmington 46 78 51 80 / 0 0 0 5 


&& 


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


$$ 


Weather forecast office lsx 












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