Herculaneum, Missouri Weather Conditions

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Current Conditions

  • 49°
  • Clear
  • Wind: South 10 mph
  • Humidity: 56%
  • Visibility: 10.0 miles
  • Dew Point: 34°
  • Pressure: 30.01 in. -

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Next 12 Hours

3  pm
6  pm
9  pm
12  am
3  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
48°
46°
43°
45°
43°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Partly Cloudy
  • High: 49 °
  • Low: 43 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 61 °
  • Low: 55 °
  • Partly Cloudy
  • Sunday
  • Chance of Rain
  • High: 68 °
  • Low: 28 °
  • Chance of Rain
  • Monday
  • Mostly Cloudy
  • High: 34 °
  • Low: 25 °
  • Mostly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 43 °
  • Low: 28 °
  • Partly Cloudy

Forecast for Herculaneum, Missouri

Updated: 9:00 AM CST on November 28, 2014

  • Friday

    Clear in the morning, then partly cloudy. High of 48F. Breezy. Winds from the SSE at 10 to 20 mph.

  • Friday Night

    Partly cloudy. Low of 43F. Winds from the South at 10 to 15 mph.

  • Saturday

    Overcast in the morning, then partly cloudy. High of 61F. Winds from the South at 10 to 15 mph.

  • Saturday Night

    Partly cloudy. Low of 55F. Winds from the SSW at 10 to 15 mph.

  • Sunday

    Overcast with a chance of rain. High of 68F. Winds from the SSW at 10 to 15 mph. Chance of rain 20%.

  • Sunday Night

    Overcast with a chance of snow in the evening, then mostly cloudy. Low of 28F. Breezy. Winds from the North at 15 to 20 mph.

  • Monday

    Mostly cloudy in the morning, then overcast. High of 34F with a windchill as low as 18F. Breezy. Winds from the NNE at 10 to 20 mph.

  • Monday Night

    Mostly cloudy in the evening, then clear. Low of 25F with a windchill as low as 18F. Winds from the NE at 5 to 15 mph.

  • Tuesday

    Partly cloudy. High of 43F. Winds from the ESE at 5 to 10 mph shifting to the South in the afternoon.

  • Tuesday Night

    Partly cloudy. Low of 28F. Winds from the SW at 5 to 10 mph.

  • Wednesday

    Mostly cloudy. High of 52F. Winds less than 5 mph.

  • Wednesday Night

    Overcast with a chance of rain. Low of 36F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Thursday

    Overcast with a chance of rain. Fog early. High of 57F. Winds from the South at 5 to 15 mph. Chance of rain 50%.

  • Thursday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 32F. Winds from the SW at 10 to 15 mph. Chance of rain 50%.

  • Friday

    Mostly cloudy. Fog early. High of 43F. Winds from the NNW at 10 to 15 mph.

  • Friday Night

    Mostly cloudy. Fog overnight. Low of 34F. Winds from the NE at 5 to 15 mph.

  • Saturday

    Partly cloudy. High of 45F. Winds less than 5 mph.

  • Saturday Night

    Mostly cloudy. Low of 30F. Winds less than 5 mph.

  • Sunday

    Mostly cloudy. High of 43F. Winds less than 5 mph.

  • Sunday Night

    Mostly cloudy. Low of 32F. Winds less than 5 mph.

  • Monday

    Overcast with a chance of snow. Fog early. High of 39F. Winds less than 5 mph. Chance of snow 30%.

  • Monday Night

    Clear. Fog overnight. Low of 32F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Herculaneum, Mott Street, Herculaneum, MO

Updated: 1:50 PM CST

Temperature: 48.4 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.62 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: MesoWest MAEYS1 IL US UPR, Maeystown, IL

Updated: 12:15 PM CST

Temperature: 43 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 2:11 PM CST

Temperature: 49.6 °F Dew Point: 34 °F Humidity: 54% Wind: WSW at 5.0 mph Pressure: 29.93 in Hourly Precipitation: 0.01 in Windchill: 48 °F Graphs

Location: summerfield, Imperial, MO

Updated: 2:11 PM CST

Temperature: 51.6 °F Dew Point: 33 °F Humidity: 49% Wind: SSW at 1.1 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 2:11 PM CST

Temperature: 47.3 °F Dew Point: 42 °F Humidity: 83% Wind: South at 2.0 mph Pressure: 29.36 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 2:11 PM CST

Temperature: 52.9 °F Dew Point: 32 °F Humidity: 44% Wind: SSE at 4.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Arnold, MO

Updated: 2:10 PM CST

Temperature: 50.8 °F Dew Point: 38 °F Humidity: 61% Wind: SSE at 3.0 mph Pressure: 29.98 in Hourly Precipitation: 0.05 in Windchill: - Graphs

Location: Arnold, Arnold, MO

Updated: 2:11 PM CST

Temperature: 49.2 °F Dew Point: 36 °F Humidity: 61% Wind: SSE at 8.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: ARNOLD, Arnold, MO

Updated: 1:50 PM CST

Temperature: 49.8 °F Dew Point: - Humidity: 47% Wind: North at - Pressure: 29.35 in Hourly Precipitation: - Windchill: 50 °F Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 2:11 PM CST

Temperature: 50.7 °F Dew Point: 31 °F Humidity: 47% Wind: East at 1.6 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Christopher Winds, Oakville, MO

Updated: 1:36 PM CST

Temperature: 47.2 °F Dew Point: 36 °F Humidity: 66% Wind: SE at 3.0 mph Pressure: 30.00 in Hourly Precipitation: 0.07 in Windchill: 47 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 2:11 PM CST

Temperature: 50.1 °F Dew Point: 35 °F Humidity: 56% Wind: SW at 4.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hardy Acres / AA9UC, Waterloo, IL

Updated: 2:11 PM CST

Temperature: 45.9 °F Dew Point: 33 °F Humidity: 61% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 2:11 PM CST

Temperature: 48.6 °F Dew Point: 37 °F Humidity: 64% Wind: South at 7.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 2:10 PM CST

Temperature: 51.4 °F Dew Point: 36 °F Humidity: 55% Wind: ESE at 1.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Ste Genevieve county, Festus, MO

Updated: 2:11 PM CST

Temperature: 48.8 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 2:11 PM CST

Temperature: 48.9 °F Dew Point: 36 °F Humidity: 60% Wind: SE at 5.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 2:11 PM CST

Temperature: 52.0 °F Dew Point: 31 °F Humidity: 44% Wind: South at 17.4 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Devall's Backyard, Waterloo, IL

Updated: 1:58 PM CST

Temperature: 51.4 °F Dew Point: 35 °F Humidity: 54% Wind: North at 7.7 mph Pressure: 30.03 in Hourly Precipitation: - Windchill: - Graphs

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

Updated: 2:10 PM CST

Temperature: 52.4 °F Dew Point: 36 °F Humidity: 53% Wind: SSW at 11.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Gedern Village, Columbia, IL

Updated: 2:07 PM CST

Temperature: 49.8 °F Dew Point: 35 °F Humidity: 57% Wind: ESE at 2.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: APRSWXNET Milstadt IL US, Waterloo, IL

Updated: 1:25 PM CST

Temperature: 47 °F Dew Point: 36 °F Humidity: 66% Wind: WSW at 4 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 2:11 PM CST

Temperature: 48.4 °F Dew Point: 33 °F Humidity: 56% Wind: SE at 13.7 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: San Luis Trails, Fenton, MO

Updated: 2:11 PM CST

Temperature: 51.0 °F Dew Point: 32 °F Humidity: 47% Wind: South at 5.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 2:11 PM CST

Temperature: 51.7 °F Dew Point: 36 °F Humidity: 56% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.01 in Windchill: - Graphs

Location: St. Joseph Hill, Pacific, MO

Updated: 2:05 PM CST

Temperature: 53.9 °F Dew Point: 36 °F Humidity: 51% Wind: SW at 7.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: St. Louis, MO

Updated: 2:11 PM CST

Temperature: 51.7 °F Dew Point: 36 °F Humidity: 56% Wind: East at 1.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 2:11 PM CST

Temperature: 49.8 °F Dew Point: 37 °F Humidity: 62% Wind: North at 3.1 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

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

Updated: 1:50 PM CST

Temperature: 47.1 °F Dew Point: - Humidity: 53% Wind: North at - Pressure: 29.40 in Hourly Precipitation: - Windchill: 47 °F Graphs

Location: Sunset Hills, St Louis, MO

Updated: 2:01 PM CST

Temperature: 51.1 °F Dew Point: 36 °F Humidity: 57% Wind: SSW at 1.0 mph Pressure: 30.00 in Hourly Precipitation: - Windchill: - Graphs

Location: Crestwood, Crestwood, MO

Updated: 2:08 PM CST

Temperature: 51.1 °F Dew Point: 38 °F Humidity: 60% Wind: SE at 8.3 mph Pressure: 29.71 in Hourly Precipitation: - Windchill: - Graphs

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

Updated: 2:10 PM CST

Temperature: 51.0 °F Dew Point: 36 °F Humidity: 56% Wind: South at 4.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Windchill: - 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 
1127 am CST Fri Nov 28 2014 


Short term: (today through saturday) 
issued at 332 am CST Fri Nov 28 2014 


Cold high pressure over the central U.S. Will drift east today and 
return flow will bring warmer air to the mid Mississippi Valley. 
Expect temperatures to rise to near seasonal normals in the upper 
40s to low 50s. With southerly flow we should see increasing low 
level moisture. The last several model runs have been pretty 
consistent in bringing high relative humidity into the area at or below 925mb. Now 
the sref is in on it showing high probabilities of low ceilings 
across the area for much of the day Saturday. Have therefore 
increased cloud cover and lowered temperatures slightly for 
Saturday. Models continue to spit out light quantitative precipitation forecast in this strong 
moisture return pattern; have kept forecast dry though since this is 
a known issue with the models in these situations. BUFKIT soundings 
indicate weak subsidence in the moist layer, so I feel the chance 
for precip is very low. 


Carney 


Long term: (tonight through thursday) 
issued at 417 am CST Fri Nov 28 2014 


The shortwave currently over British Columbia will deepen and slide 
into the northern plains Saturday night. This will allow a very 
cold but shallow airmass to dip into the upper Midwest. Guidance 
has been pretty consistent with the speed of the resulting cold 
front, which should stay north of our area Saturday night. Should 
continue to be cloudy/mostly cloudy with a decent southwest wind 
overnight. This would tend to keep temperatures up overnight so 
tried to stick closer to warmer guidance. 


Cold front will dip across the area on Sunday driven by a 
1035-1040mb Canadian high. Typically, the models are too slow with 
the infiltration of these kinds of very cold airmasses. To try to 
compensate for this, have leaned heavily on 2m temperatures from the 
NAM which seem to be about the coldest and most aggressive with the 
cold advection. With that in mind, front should be through Quincy 
by 18z, and through the stl Metro before 00z. While temps ahead of 
the front should remain mild, but behind the front temperatures 
should drop rapidly into the 30s and 40s. Meanwhile, expecting 
frontogenesis and low level moisture convergence to produce light 
rain along and south of the I-70 corridor. BUFKIT soundings from 
all guidance members are pretty consistent in showing this cold 
airmass won't be deep enough to produce snow, but rather freezing 
rain initially late Sunday night, then possibly mixed with sleet on 
Monday before ending. Not confident yet in a mix, so have let 
surface temperatures determine precipitation type in the forecast 
and just kept a "rain changing to freezing rain" forecast for this 
forecast cycle. Patchy light freezing rain south of I-44 should end 
Monday by late afternoon or early evening. 


Medium range guidance seems to be in better agreement for Tuesday 
through Thursday this morning. Unfortunately they're in better 
agreement that the flow aloft will be quasi-zonal, which is not good 
for accuracy in the medium range. The general pattern looks like we 
should see slowly moderating temperatures after the big chill on 
Monday and Monday night as the strong high pressure system moves off 
to our east-northeast and the low level flow again turns to the 
south. The European model (ecmwf) still brings a second cold front through the area 
on Wednesday which would keep US cooler than the GFS, but since the 
two models agree to disagree on this point, I stuck close to 
ensemble MOS guidance temperatures through the period. 


Carney 


&& 


Aviation: (for the 18z tafs through 18z Saturday afternoon) 
issued at 1118 am CST Fri Nov 28 2014 


VFR conditions this afternoon with gusty south to southwest winds. VFR 
conditions will last into the evening hours tonight, however MVFR 
cloud deck will rapidly develop by around 09z. Low level wind shear 
will also develop by around 03z and last into Saturday morning. 
MVFR ceilings should last through 18z with strong temperature 
inversion and weak winter sun making it difficult for low clouds 
to break up. 


Specifics for kstl: expect VFR conditions through around 09z, then 
rapid development of MVFR ceilings. A strong inversion will help 
set up robust low level jet and lead to low level wind shear 
beginning around 03z and lasting until around 15z Saturday. MVFR 
ceilings will be tough to break up as strong inversion persists 
through the day Sunday. 


Browning 


&& 


Preliminary point temperatures/pops: 
Saint Louis 49 40 58 53 / 0 0 5 5 
Quincy 45 37 52 47 / 0 0 5 5 
Columbia 53 42 61 51 / 0 0 5 5 
Jefferson City 56 43 62 52 / 0 0 5 5 
Salem 44 37 55 54 / 0 0 5 10 
Farmington 48 40 57 54 / 0 0 5 10 


&& 


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


$$ 


Weather forecast office lsx 












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