Herculaneum, Missouri Weather Conditions

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Current Conditions

  • 51°
  • Clear
  • Wind: South 10 mph
  • Humidity: 59%
  • Visibility: 10.0 miles
  • Dew Point: 37°
  • Pressure: 29.82 in. -

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Next 12 Hours

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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Mostly Cloudy
  • High: 51 °
  • Low: 28 °
  • Mostly Cloudy
  • Friday
  • Partly Cloudy
  • High: 39 °
  • Low: 27 °
  • Partly Cloudy
  • Saturday
  • Rain
  • High: 43 °
  • Low: 34 °
  • Rain
  • Sunday
  • Chance of Snow
  • High: 36 °
  • Low: 16 °
  • Chance of Snow
  • Monday
  • Partly Cloudy
  • High: 32 °
  • Low: 23 °
  • Partly Cloudy

Forecast for Herculaneum, Missouri

Updated: 9:00 PM CST on January 28, 2015

  • Thursday

    Mostly cloudy. High of 48F. Breezy. Winds from the WNW at 15 to 25 mph with gusts to 30 mph.

  • Thursday Night

    Mostly cloudy in the evening, then clear. Low of 28F with a windchill as low as 21F. Breezy. Winds from the NW at 10 to 20 mph.

  • Friday

    Clear in the morning, then partly cloudy. High of 39F. Winds from the North at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 27F. Winds less than 5 mph.

  • Saturday

    Overcast with a chance of snow and a chance of rain in the afternoon. High of 43F. Winds from the SSE at 5 to 10 mph. Chance of snow 20%.

  • Saturday Night

    Overcast with rain, then a chance of snow and a chance of rain after midnight. Low of 34F. Winds from the SSW at 5 to 10 mph. Chance of precipitation 60% .

  • Sunday

    Overcast with a chance of snow and rain showers. Fog early. High of 36F with a windchill as low as 21F. Breezy. Winds from the West at 5 to 25 mph shifting to the NNW in the afternoon. Chance of snow 20%.

  • Sunday Night

    Mostly cloudy. Low of 16F with a windchill as low as 9F. Winds from the North at 5 to 20 mph.

  • Monday

    Partly cloudy. High of 32F. Winds less than 5 mph.

  • Monday Night

    Partly cloudy. Low of 23F with a windchill as low as 14F. Winds from the SSE at 10 to 15 mph.

  • Tuesday

    Clear. Fog early. High of 41F. Winds from the SSW at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy. Low of 32F. Winds from the South at 5 to 10 mph.

  • Wednesday

    Partly cloudy with a chance of snow. High of 43F. Winds from the ENE at 5 to 15 mph. Chance of snow 20%.

  • Wednesday Night

    Partly cloudy. Low of 18F with a windchill as low as 10F. Breezy. Winds from the NNE at 15 to 20 mph.

  • Thursday

    Clear. High of 36F. Winds from the NW at 5 to 15 mph.

  • Thursday Night

    Clear. Low of 18F. Winds less than 5 mph.

  • Friday

    Clear. High of 34F. Winds from the WNW at 5 to 10 mph.

  • Friday Night

    Clear. Low of 21F. Winds less than 5 mph.

  • Saturday

    Clear. High of 41F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 25F. Winds less than 5 mph.

  • Sunday

    Clear. High of 48F. Winds from the SW at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 25F. Winds from the SW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Herculaneum, Mott Street, Herculaneum, MO

Updated: 11:50 PM CST

Temperature: 50.2 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.44 in Hourly Precipitation: - Windchill: - Graphs

Location: APRSWXNET Pevely MO US, Pevely, MO

Updated: 11:48 PM CST

Temperature: 51 °F Dew Point: 40 °F Humidity: 67% Wind: SSW at 2 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest MAEYS1 IL US UPR, Maeystown, IL

Updated: 10:40 PM CST

Temperature: 44 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Imperial - Wellington Subdivision, Imperial, MO

Updated: 12:13 AM CST

Temperature: 52.8 °F Dew Point: 42 °F Humidity: 66% Wind: WSW at 3.5 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Imperial MO US, Imperial, MO

Updated: 11:34 PM CST

Temperature: 52 °F Dew Point: 41 °F Humidity: 65% Wind: South at 2 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 12:13 AM CST

Temperature: 48.6 °F Dew Point: 37 °F Humidity: 65% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: summerfield, Imperial, MO

Updated: 12:13 AM CST

Temperature: 51.4 °F Dew Point: 30 °F Humidity: 43% Wind: Calm Pressure: 29.57 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Arnold MO US, Sulphur Springs, MO

Updated: 11:28 PM CST

Temperature: 50 °F Dew Point: 38 °F Humidity: 63% Wind: SE at 3 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hillsboro, Missouri, Hillsboro, MO

Updated: 12:08 AM CST

Temperature: 50.2 °F Dew Point: 37 °F Humidity: 61% Wind: SSE at 6.3 mph Pressure: 29.72 in Hourly Precipitation: - Windchill: - Graphs

Location: Guardian Court, Arnold, MO

Updated: 12:10 AM CST

Temperature: 47.8 °F Dew Point: 39 °F Humidity: 70% Wind: North at - Pressure: 29.78 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 12:13 AM CST

Temperature: 51.8 °F Dew Point: 35 °F Humidity: 52% Wind: SSE at 10.3 mph Pressure: 29.18 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Arnold # 1, Arnold, MO

Updated: 12:02 AM CST

Temperature: 51.1 °F Dew Point: 38 °F Humidity: 61% Wind: SSW at 6.3 mph Pressure: 29.52 in Hourly Precipitation: - Windchill: - Graphs

Location: Rosewood Korner, Waterloo, IL

Updated: 12:13 AM CST

Temperature: 51.1 °F Dew Point: 38 °F Humidity: 60% Wind: SSW at 7.8 mph Pressure: 29.11 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 12:13 AM CST

Temperature: 49.5 °F Dew Point: 33 °F Humidity: 53% Wind: South at 9.6 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: APRSWXNET Arnold MO US, Arnold, MO

Updated: 11:25 PM CST

Temperature: 50 °F Dew Point: 40 °F Humidity: 69% Wind: SSW at 4 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Arnold, MO

Updated: 12:10 AM CST

Temperature: 51.4 °F Dew Point: 42 °F Humidity: 70% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Arnold, Arnold, MO

Updated: 11:58 PM CST

Temperature: 51.2 °F Dew Point: 39 °F Humidity: 64% Wind: South at 7.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: ARNOLD, Arnold, MO

Updated: 11:50 PM CST

Temperature: 48.7 °F Dew Point: - Humidity: 56% Wind: North at - Pressure: 29.14 in Hourly Precipitation: - Windchill: 49 °F Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 12:13 AM CST

Temperature: 49.5 °F Dew Point: 34 °F Humidity: 56% Wind: East at 1.3 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: APRSWXNET Cedar Hill MO US, Cedar Hill, MO

Updated: 11:27 PM CST

Temperature: 51 °F Dew Point: 40 °F Humidity: 66% Wind: SSW at 3 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Christopher Winds, Oakville, MO

Updated: 12:13 AM CST

Temperature: 49.2 °F Dew Point: 40 °F Humidity: 69% Wind: SSE at 4.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 12:13 AM CST

Temperature: 50.4 °F Dew Point: 40 °F Humidity: 67% Wind: SW at 5.0 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hardy Acres / AA9UC, Waterloo, IL

Updated: 12:13 AM CST

Temperature: 49.5 °F Dew Point: 36 °F Humidity: 60% Wind: South at 10.7 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: APRSWXNET Oakville MO US, Saint Louis, MO

Updated: 11:35 PM CST

Temperature: 49 °F Dew Point: 39 °F Humidity: 69% Wind: SSW at 6 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 12:13 AM CST

Temperature: 49.7 °F Dew Point: 40 °F Humidity: 69% Wind: SSW at 5.0 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 12:10 AM CST

Temperature: 50.4 °F Dew Point: 40 °F Humidity: 67% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Ste Genevieve county, Festus, MO

Updated: 12:11 AM CST

Temperature: 50.5 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 12:13 AM CST

Temperature: 51.3 °F Dew Point: 40 °F Humidity: 64% Wind: SSE at 5.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET St. Louis MO US, Saint Louis, MO

Updated: 11:30 PM CST

Temperature: 51 °F Dew Point: 39 °F Humidity: 63% Wind: SSW at 6 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Byrnes Mill MO US, Liguori, MO

Updated: 11:39 PM CST

Temperature: 52 °F Dew Point: 37 °F Humidity: 56% Wind: SSW at 5 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 12:13 AM CST

Temperature: 52.7 °F Dew Point: 38 °F Humidity: 56% Wind: South at 9.2 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Cathedral Drive, Saint Louis, MO

Updated: 12:10 AM CST

Temperature: 48.4 °F Dew Point: 40 °F Humidity: 71% Wind: North at - Pressure: 29.89 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Devall's Backyard, Waterloo, IL

Updated: 12:09 AM CST

Temperature: 52.6 °F Dew Point: 39 °F Humidity: 60% Wind: North at 9.4 mph Pressure: 29.82 in Hourly Precipitation: - Windchill: - Graphs

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

Updated: 12:01 AM CST

Temperature: 53.4 °F Dew Point: 41 °F Humidity: 64% Wind: South at 10.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Gedern Village, Columbia, IL

Updated: 12:12 AM CST

Temperature: 52.5 °F Dew Point: 40 °F Humidity: 62% Wind: SSW at 7.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Milstadt IL US, Waterloo, IL

Updated: 11:30 PM CST

Temperature: 48 °F Dew Point: 39 °F Humidity: 70% Wind: SW at 5 mph Pressure: 29.78 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Deerpath Acres Court, Saint Louis, MO

Updated: 12:10 AM CST

Temperature: 48.7 °F Dew Point: 37 °F Humidity: 64% Wind: North at - Pressure: 29.83 in Hourly Precipitation: - Windchill: 49 °F Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 12:13 AM CST

Temperature: 50.5 °F Dew Point: 39 °F Humidity: 64% Wind: SSW at 10.2 mph Pressure: 29.81 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 
1142 PM CST Wed Jan 28 2015 


Short term: (through late tonight) 
issued at 402 PM CST Wed Jan 28 2015 


Shortwave over the Nebraska Panhandle and eastern Colorado and associated 
surface low ahead of it over eastern Nebraska will move eastward 
through northern MO and southern Iowa tonight. The surface low will 
drag a cold front southeastward through our forecast area late 
tonight and Thursday morning. Most of the models have the 
precipitation north of the surface low track, although the European model (ecmwf) 
model does generate light qpf across Illinois already this evening in the 
warm air advection regime ahead of the shortwave. The models were 
also depicting upper level divergence centered over northeast MO and 
west central IL, mainly late tonight in the left exit region of an 
upper level jet streak dropping into southwest MO. The quality and 
depth of moisture is quite limited with this system so will only 
include slight chance pops across west centrl and southwest IL, 
mainly late tonight into Thursday morning. A tight surface 
pressure gradient along with a strong southwesterly low level jet 
will lead to relatively strong surface winds for the nightime 
hours. Low temperatures will be above normal tonight as the strong 
cold air advection behind the front will not impact most of the area 
until Thursday morning. 


Gks 


Long term: (thursday through next wednesday) 
issued at 402 PM CST Wed Jan 28 2015 


Colder conditions are expected on Thursday due to low level cold air 
advection with strong and gusty northwest winds behind the cold 
front, along with Post frontal low level cloudiness to limit solar 
insolation. Little diurnal temperature range is expected with some 
areas likely having nearly steady or slightly falling temperatures 
during the late morning and afternoon hours. These clouds should 
clear out Thursday night as subsidence increases over our area as a 
strong surface ridge over the northern plains builds southeastward 
into the region. Cold conditions will continue Thursday night and 
Friday with near normal temperatures for late January. 
Precipitation is expected to spread into our area by Saturday 
afternoon and evening as moisture spreads into our region ahead of 
the southwestern US upper level low, and as a strong northern stream 
shortwave approaches from the northern plains. Initially it appears 
that surface temperatures will be warm enough Saturday afternoon 
into the evening that any precipiation at this time should fall as 
liquid rain. As a cold front sags southward through our forecast 
area Saturday night into Sunday as the upper level trough gradually 
deepens over the northern plains and Great Lakes region the 
precipitation should change over to snow. The European model (ecmwf) model has most 
of its quantitative precipitation forecast along and south of I-70 Saturday night and Sunday. The 
GFS is similar although it does have a little more qpf across 
northern MO and west central Illinois compared to the European model (ecmwf). There has 
been plenty of model differences along with run to run 
inconsistencies with this weekend storm system and hence it has been 
difficult to determine precipitation amounts and types across our 
area. For now it does appear that at least a portion of our 
forecast area will see accumulating snow Saturday night and Sunday, 
but the snowfall amounts and where the maximum axis of snow will 
occur is still in question. Much colder, below normal temperatures 
can be expected for Sunday night through Monday night with the 
models dropping the -12 degree c 850 mb isotherm southward into our 
forecast area Sunday afternoon. Monday and Tuesday will likely be 
dry as snow associated with northwest flow shortwaves should be 
north of our area, and any precipitation associated with the 
southwest US upper level low finally moving eastward through the 
Southern Plains and Gulf Coast region will be well south of our area. 


Gks 


&& 


Aviation: (for the 06z tafs through 06z Thursday night) 
issued at 1132 PM CST Wed Jan 28 2015 




Cold front has moved through central Missouri and should pass 
through the taf sites late tonight. MVFR ceilings are expected 
within a few hours after fropa...along with winds sharply veering 
to the northwest along with gusts 20-30 knots. Some uncertainty as 
to how long these ceilings will persist. For now continued to lean 
a bit pessisimistic given expansive overcast deck on 11-3.9 micron 
satellite imagery. NAM guidance looked pretty good and followed 
closely for ceiling trends through the day on Saturday. This 
resulted in tafs with ceilings rising and then scattering out by 
afternoon. 




Specifics for kstl: 


Cold front has moved through central Missouri and should pass 
through the taf sites late tonight. MVFR ceilings are expected 
by 1200 UTC behind the front..along with winds sharply veering 
to the northwest. Some uncertainty as to how long these ceilings 
will persist. For now continued to lean a bit pessisimistic given 
expansive overcast deck on 11-3.9 micron satellite imagery. NAM 
guidance looked pretty good and followed closely for ceiling 
trends through the day on Thursday. Winds should slacken up a bit 
as sfc ridge approaches area on Thursday night. 


Gosselin 


&& 


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


$$ 


Weather forecast office lsx 












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