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

  • 64°
  • Clear
  • Wind: ESE 13 mph
  • Humidity: 40%
  • Visibility: 10.0 miles
  • Dew Point: 39°
  • Pressure: 30.06 in. -

Select a Section

Click a section below for more information.

Next 12 Hours

4  pm
7  pm
10  pm
1  am
4  am
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
68°
64°
61°
57°
54°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Partly Cloudy
  • High: 68 °
  • Low: 52 °
  • Partly Cloudy
  • Thursday
  • Thunderstorm
  • High: 75 °
  • Low: 50 °
  • T-Storms
  • Friday
  • Clear
  • High: 77 °
  • Low: 52 °
  • Clear
  • Saturday
  • Clear
  • High: 73 °
  • Low: 52 °
  • Clear
  • Sunday
  • Chance of a Thunderstorm
  • High: 79 °
  • Low: 54 °
  • Chance of a Thunderstorm

Forecast for Herculaneum, Missouri

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

  • Wednesday

    Clear in the morning, then mostly cloudy. High of 68F. Winds from the SSE at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy. Low of 52F. Winds from the SE at 10 to 15 mph.

  • Thursday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the morning, then overcast with thunderstorms and rain showers. High of 75F. Breezy. Winds from the SSE at 15 to 20 mph. Chance of rain 80% with rainfall amounts near 0.3 in. possible.

  • Thursday Night

    Mostly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then clear. Low of 50F. Winds from the West at 5 to 20 mph. Chance of rain 40% with rainfall amounts near 0.3 in. possible.

  • Friday

    Clear. High of 77F. Winds from the WSW at 5 to 15 mph.

  • Friday Night

    Partly cloudy in the evening, then clear. Low of 52F. Winds from the SW at 5 to 15 mph.

  • Saturday

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

  • Saturday Night

    Clear. Low of 52F. Winds from the East at 10 to 15 mph.

  • Sunday

    Mostly cloudy with a chance of a thunderstorm and rain in the afternoon. High of 79F. Winds from the ESE at 10 to 15 mph. Chance of rain 20%.

  • Sunday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 54F. Winds from the ESE at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 86F. Breezy. Winds from the SSE at 15 to 20 mph. Chance of rain 40%.

  • Monday Night

    Partly cloudy with a chance of rain. Low of 50F. Winds from the SSE at 5 to 15 mph. Chance of rain 40%.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm. High of 81F. Winds from the NE at 5 to 20 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Tuesday Night

    Partly cloudy with a chance of rain. Low of 50F. Breezy. Winds from the North at 10 to 20 mph. Chance of rain 40%.

  • Wednesday

    Partly cloudy with a chance of rain. High of 59F. Breezy. Winds from the NNW at 15 to 20 mph. Chance of rain 20%.

  • Wednesday Night

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

  • Thursday

    Clear. High of 70F. Winds from the NNW at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Low of 48F. Winds less than 5 mph.

  • Friday

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

  • Friday Night

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

  • Saturday

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

  • Saturday Night

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

  • Sunday

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

  • Sunday Night

    Clear. Low of 54F. Winds from the South at 10 to 15 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Sandy Creek Winery, Pevely, MO

Updated: 3:04 PM CDT

Temperature: 66.8 °F Dew Point: 40 °F Humidity: 38% Wind: NNW at 2.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest MAEYS1 IL US UPR, Maeystown, IL

Updated: 1:20 PM CDT

Temperature: 62 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Imperial - Wellington Subdivision, Imperial, MO

Updated: 3:17 PM CDT

Temperature: 67.8 °F Dew Point: 45 °F Humidity: 44% Wind: South at 3.5 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 3:17 PM CDT

Temperature: 67.3 °F Dew Point: 37 °F Humidity: 33% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lake Lorraine, Hillsboro, MO

Updated: 3:05 PM CDT

Temperature: 67.8 °F Dew Point: 44 °F Humidity: 42% Wind: SE at 2.0 mph Pressure: 30.00 in Hourly Precipitation: - Heat Index: - Graphs

Location: Imperial, MO

Updated: 3:17 PM CDT

Temperature: 63.7 °F Dew Point: 43 °F Humidity: 47% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest WARNK1 IL US UPR, Columbia, IL

Updated: 2:00 PM CDT

Temperature: 62 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 2:00 PM CDT

Temperature: 65 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 3:17 PM CDT

Temperature: 68.5 °F Dew Point: 41 °F Humidity: 37% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Arnold, MO

Updated: 3:03 PM CDT

Temperature: 66.4 °F Dew Point: 44 °F Humidity: 45% Wind: NE at 1.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Arnold, Arnold, MO

Updated: 3:17 PM CDT

Temperature: 64.7 °F Dew Point: 41 °F Humidity: 42% Wind: SE at 4.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 3:17 PM CDT

Temperature: 73.0 °F Dew Point: 36 °F Humidity: 26% Wind: North at 2.2 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 3:17 PM CDT

Temperature: 64.7 °F Dew Point: 40 °F Humidity: 40% Wind: SE at 1.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hardy Acres / AA9UC, Waterloo, IL

Updated: 3:16 PM CDT

Temperature: 66.1 °F Dew Point: 37 °F Humidity: 34% Wind: NE at 2.2 mph Pressure: 30.12 in Hourly Precipitation: - Heat Index: - Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 3:17 PM CDT

Temperature: 66.9 °F Dew Point: 42 °F Humidity: 41% Wind: ESE at 3.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 3:16 PM CDT

Temperature: 65.5 °F Dew Point: 41 °F Humidity: 41% Wind: SE at 2.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ste Genevieve county, Festus, MO

Updated: 3:16 PM CDT

Temperature: 69.2 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 3:17 PM CDT

Temperature: 64.5 °F Dew Point: 40 °F Humidity: 40% Wind: SE at 4.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 3:17 PM CDT

Temperature: 65.8 °F Dew Point: 36 °F Humidity: 33% Wind: South at 6.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Devall's Backyard, Waterloo, IL

Updated: 3:10 PM CDT

Temperature: 67.6 °F Dew Point: 41 °F Humidity: 38% Wind: North at 11.2 mph Pressure: 30.06 in Hourly Precipitation: - Heat Index: - Graphs

Location: Gedern Village, Columbia, IL

Updated: 3:17 PM CDT

Temperature: 65.1 °F Dew Point: 39 °F Humidity: 38% Wind: ENE at 4.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: APRSWXNET Mehlville MO US, Saint Louis, MO

Updated: 2:46 PM CDT

Temperature: 64 °F Dew Point: 44 °F Humidity: 48% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: San Luis Trails, Fenton, MO

Updated: 3:17 PM CDT

Temperature: 65.5 °F Dew Point: 36 °F Humidity: 34% Wind: ENE at 1.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 3:15 PM CDT

Temperature: 65.3 °F Dew Point: - Humidity: 34% Wind: ESE at 4.0 mph Pressure: 29.37 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 3:17 PM CDT

Temperature: 65.5 °F Dew Point: 43 °F Humidity: 44% Wind: East at 4.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: St. Joseph Hill, Pacific, MO

Updated: 3:09 PM CDT

Temperature: 66.2 °F Dew Point: 42 °F Humidity: 41% Wind: ENE at 7.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: St. Louis, MO

Updated: 3:17 PM CDT

Temperature: 64.4 °F Dew Point: 40 °F Humidity: 40% Wind: NNW at 2.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Radiom Dr, Affton, MO

Updated: 3:17 PM CDT

Temperature: 63.8 °F Dew Point: 38 °F Humidity: 39% Wind: SE at 2.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 3:10 PM CDT

Temperature: 71.6 °F Dew Point: 39 °F Humidity: 31% Wind: NE at 4.5 mph Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: South County, Affton, MO

Updated: 3:17 PM CDT

Temperature: 63.5 °F Dew Point: 41 °F Humidity: 44% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: K0GDI, Blackwell, MO

Updated: 3:17 PM CDT

Temperature: 68.6 °F Dew Point: 38 °F Humidity: 32% Wind: South at 3.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Sunset Hills, St Louis, MO

Updated: 3:11 PM CDT

Temperature: 63.6 °F Dew Point: 39 °F Humidity: 41% Wind: ESE at 6.0 mph Pressure: 30.02 in Hourly Precipitation: - 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 
236 PM CDT Wed Apr 23 2014 


Short term: (through late tonight) 
issued at 236 PM CDT Wed Apr 23 2014 


(tonight) 


Mid/upper level ridge axis will pass overhead early tonight with next 
system organizing over the south-Central Plains. Expect an area of showers 
and thunderstorms to organize overnight aided by strong forcing for 
large-scale ascent via deepening trough and strong low-level moist/warm 
advection. This area of showers and storms should stay west of the area 
tonight...but may approach portions of central and northeastern Missouri 
by daybreak. Sky cover should increase overnight ahead of aforementioned 
system with brisk southeasterly winds continuing throughout the night. 
For these reasons...went a few degrees above warmer mav guidance in most 
locations. 




Gosselin 




Long term: (saturday through tuesday) 
issued at 342 am CDT Wed Apr 23 2014 


While the medium range guidance is coming into better agreement on 
the overall synoptic pattern, the smaller scale is still unclear. 
Generally, a secondary cold front will dip south across the upper 
Midwest driven south by the last vestiges of thursday's shortwave. 
The front will stall somewhere across the Midwest on Saturday, 
though models can't make up their minds where. GFS stalls the front 
across south/southwest Missouri Saturday morning, while the European model (ecmwf) 
stalls it out over northern Iowa. The Gem is right about in the 
middle stalling the front over northern Missouri. All three models 
have some low level baroclinicity over our area, whether it is the 
primary baroclinic zone associated with the front (gfs/gem) or a 
secondary baroclinic zone left over from the Pacific airmass which 
will be exiting to the east (ec). Warm advection begins Saturday 
morning with a 30+ kt low level jet pointed at this baroclinic zone 
and all three models print out some light precip. Have therefore 
kept chance pops going in central Missouri, and would not be 
surprised if subsequent shifts need to bump up pops a bit more 
across the area if model trends become more consistent. 


The front remains stalled somewhere between Springfield Missouri and 
Davenport Iowa depending on which model you believe through Monday 
as the longwave trof over the Pacific moves inland, and becomes 
negatively tilted over The Rockies and Great Plains. A strong 
surface low develops as a result and it moves into the Mississippi 
Valley Monday night into Tuesday. The upper trof cuts off and 
becomes stagnant while the surface low tracks across Missouri into 
the Ohio Valley Tuesday. Pattern is more reminiscent of late fall 
or winter than mid to late Spring. Unsure how likely this is to 
happen, but this is at least the second run in a row that i've seen 
do this. Will have to wait and see, but right now it looks like a 
cold/wet end to April. 


Carney 


&& 


Aviation: (for the 18z tafs through 18z Thursday afternoon) 
issued at 1223 PM CDT Wed Apr 23 2014 


Area of showers currently over western Missouri is expected to weaken 
this afternoon and is not expected to affect kcou or KUIN at this 
time. Main impact will be increasing midlevel cloudiness at 
terminals. Southeast winds are expected to prevail through the 
night ahead of next system which will move eastward. Southerly 
low-level jet of 40-45 knots near 2000 feet above ground level over central 
Missouri and west- central Illinois could produce low- level wind 
shear and added mention for kcou and KUIN. For tomorrow...another 
area of showers with embedded thunderstorms is expected to move 
into the area from west to east ahead of a cold front from late 
morning into the early afternoon. Actual frontal passage and 
accompanied wind shift is likely to be after this valid forecast 
period. 




Specifics for kstl: 


Increasing midlevel cloudiness is expected through the afternoon at 
the terminal. Southeast winds are expected to prevail through the night 
ahead of next system which will move eastward. Low-level jet axis 
should stay to the west of kstl precluding mention of low level wind shear. For 
tomorrow...another area of showers with embedded thunderstorms is 
expected to affect Lambert Field around midday. However...actual 
frontal passage and accompanied wind shift is likely to be just after 
this valid forecast period. 


Gosselin 


&& 


Preliminary point temperatures/pops: 
Saint Louis 52 73 45 81 / 10 80 40 0 
Quincy 50 66 43 79 / 20 80 20 0 
Columbia 54 71 44 80 / 60 80 10 0 
Jefferson City 54 71 44 80 / 50 80 10 0 
Salem 48 74 46 78 / 5 70 80 0 
Farmington 47 75 46 78 / 10 80 40 0 


&& 


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.