Herculaneum, Missouri Weather Conditions

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Current Conditions

  • 55°
  • Light Rain
  • Wind: SE 10 mph
  • Humidity: 96%
  • Visibility: 3.0 miles
  • Dew Point: 54°
  • Pressure: 29.58 in. -

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Next 12 Hours

5  am
8  am
11  am
2  pm
5  pm
Thunderstorm
T-storms
Mostly Cloudy
Mostly Cloudy
Overcast
Overcast
Thunderstorm
T-storms
Thunderstorm
T-storms
56°
57°
65°
68°
68°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Thunderstorm
  • High: 68 °
  • Low: 47 °
  • T-Storms
  • Sunday
  • Partly Cloudy
  • High: 64 °
  • Low: 40 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 67 °
  • Low: 42 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 66 °
  • Low: 48 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 69 °
  • Low: 48 °
  • Partly Cloudy

Forecast for Herculaneum, Missouri

Updated: 4:15 AM CDT on January 25, 2015

  • Saturday

    Thunderstorms likely. A few storms may be severe. High 68F. Winds SSW at 10 to 20 mph. Chance of rain 100%.

  • Saturday Night

    Thunderstorms during the evening will give way to cloudy skies after midnight. Low 47F. Winds N at 10 to 15 mph. Chance of rain 90%.

  • Sunday

    Partly cloudy skies. High 64F. Winds NNE at 10 to 15 mph.

  • Sunday Night

    Mainly clear early, then a few clouds later on. Low around 40F. Winds NNE at 10 to 15 mph.

  • Monday

    Partly cloudy. High 67F. Winds NNE at 10 to 15 mph.

  • Monday Night

    Partly cloudy. Low 42F. Winds NE at 5 to 10 mph.

  • Tuesday

    Intervals of clouds and sunshine. High 66F. Winds NNE at 5 to 10 mph.

  • Tuesday Night

    Partly to mostly cloudy. Low 48F. Winds N at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High 69F. Winds NNW at 10 to 15 mph.

  • Wednesday Night

    A few clouds. Low 48F. Winds N at 5 to 10 mph.

  • Thursday

    Mainly sunny. High 72F. Winds N at 5 to 10 mph.

  • Thursday Night

    Clear skies. Low 49F. Winds NNE at 5 to 10 mph.

  • Friday

    Sunny skies. High 76F. Winds light and variable.

  • Friday Night

    Clear skies. Low 52F. Winds light and variable.

  • Saturday

    A mainly sunny sky. High around 80F. Winds S at 5 to 10 mph.

  • Saturday Night

    Clear skies. Low 56F. Winds SSE at 5 to 10 mph.

  • Sunday

    Sunshine. High near 85F. Winds S at 10 to 15 mph.

  • Sunday Night

    Mostly clear. Low near 60F. Winds S at 5 to 10 mph.

  • Monday

    Partly cloudy early followed by increasing clouds with showers developing later in the day. High 83F. Winds SSW at 10 to 15 mph. Chance of rain 60%.

  • Monday Night

    Partly cloudy with a slight chance of thunderstorms. Low 61F. Winds SSE at 5 to 10 mph. Chance of rain 30%.

  • Tuesday

    Rain showers in the morning with scattered thunderstorms arriving in the afternoon. High 78F. Winds SSE at 10 to 15 mph. Chance of rain 50%.

  • Tuesday Night

    Variable clouds with showers and scattered thunderstorms. Storms more numerous during the evening. Low 59F. Winds SE at 5 to 10 mph. Chance of rain 40%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Herculaneum, Mott Street, Herculaneum, MO

Updated: 5:50 AM CDT

Temperature: 54.9 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.21 in Hourly Precipitation: - Graphs

Location: APRSWXNET, Pevely, MO

Updated: 5:30 AM CDT

Temperature: 54 °F Dew Point: 53 °F Humidity: 95% Wind: SE at 1 mph Pressure: 29.56 in Hourly Precipitation: 0.00 in Graphs

Location: Upper Moss Hollow Road, Barnhart, MO

Updated: 5:57 AM CDT

Temperature: 54.7 °F Dew Point: 48 °F Humidity: 78% Wind: North at - Pressure: 28.98 in Hourly Precipitation: - Graphs

Location: MesoWest, Maeystown, IL

Updated: 4:20 AM CDT

Temperature: 51 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: APRSWXNET, Imperial, MO

Updated: 5:34 AM CDT

Temperature: 56 °F Dew Point: 54 °F Humidity: 94% Wind: SSE at 1 mph Pressure: 29.56 in Hourly Precipitation: 0.00 in Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 5:58 AM CDT

Temperature: 54.4 °F Dew Point: 53 °F Humidity: 96% Wind: Calm Pressure: 29.49 in Hourly Precipitation: 0.00 in Graphs

Location: summerfield, Imperial, MO

Updated: 5:58 AM CDT

Temperature: 54.3 °F Dew Point: 54 °F Humidity: 97% Wind: Calm Pressure: 29.34 in Hourly Precipitation: 0.00 in Graphs

Location: Main Street, Fults, IL

Updated: 5:57 AM CDT

Temperature: 54.1 °F Dew Point: 49 °F Humidity: 82% Wind: North at - Pressure: 29.23 in Hourly Precipitation: - Graphs

Location: Hillsboro, Missouri, Hillsboro, MO

Updated: 5:43 AM CDT

Temperature: 53.2 °F Dew Point: 53 °F Humidity: 98% Wind: ESE at 2.7 mph Pressure: 29.37 in Hourly Precipitation: - Graphs

Location: MesoWest, Columbia, IL

Updated: 5:00 AM CDT

Temperature: 54 °F Dew Point: - Humidity: - Wind: North at 255 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: MesoWest, Saint Louis, MO

Updated: 5:00 AM CDT

Temperature: 57 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Guardian Court, Arnold, MO

Updated: 5:56 AM CDT

Temperature: 55.4 °F Dew Point: 48 °F Humidity: 76% Wind: North at - Pressure: 29.55 in Hourly Precipitation: - Graphs

Location: Arrowhead STL County, Saint Louis, MO

Updated: 5:44 AM CDT

Temperature: 54.0 °F Dew Point: 52 °F Humidity: 92% Wind: SSE at 5.8 mph Pressure: 29.67 in Hourly Precipitation: - Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 5:58 AM CDT

Temperature: 55.0 °F Dew Point: 51 °F Humidity: 86% Wind: North at 2.9 mph Pressure: 28.97 in Hourly Precipitation: 0.00 in Graphs

Location: Arnold # 1, Arnold, MO

Updated: 5:43 AM CDT

Temperature: 54.0 °F Dew Point: 51 °F Humidity: 91% Wind: SSE at 6.7 mph Pressure: 29.65 in Hourly Precipitation: - Graphs

Location: Rosewood Korner, Waterloo, IL

Updated: 5:57 AM CDT

Temperature: 53.6 °F Dew Point: 53 °F Humidity: 99% Wind: ESE at 7.8 mph Pressure: 28.89 in Hourly Precipitation: 0.00 in Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 5:58 AM CDT

Temperature: 54.1 °F Dew Point: 52 °F Humidity: 94% Wind: SE at 3.6 mph Pressure: 29.59 in Hourly Precipitation: 0.04 in Graphs

Location: Arnold, MO

Updated: 5:50 AM CDT

Temperature: 54.5 °F Dew Point: 53 °F Humidity: 96% Wind: Calm Pressure: 29.54 in Hourly Precipitation: 0.03 in Graphs

Location: Arnold, Arnold, MO

Updated: 5:54 AM CDT

Temperature: 53.9 °F Dew Point: 53 °F Humidity: 95% Wind: SSE at 2.0 mph Pressure: 29.54 in Hourly Precipitation: 0.05 in Graphs

Location: ARNOLD, Arnold, MO

Updated: 5:50 AM CDT

Temperature: 54.0 °F Dew Point: - Humidity: 87% Wind: North at - Pressure: 29.00 in Hourly Precipitation: - Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 5:58 AM CDT

Temperature: 55.0 °F Dew Point: 54 °F Humidity: 95% Wind: ESE at 2.9 mph Pressure: 29.65 in Hourly Precipitation: 0.04 in Graphs

Location: Christopher Winds, Oakville, MO

Updated: 5:58 AM CDT

Temperature: 54.1 °F Dew Point: 53 °F Humidity: 96% Wind: ESE at 4.0 mph Pressure: 29.54 in Hourly Precipitation: 0.08 in Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 5:58 AM CDT

Temperature: 52.4 °F Dew Point: 51 °F Humidity: 96% Wind: ESE at 1.0 mph Pressure: 29.49 in Hourly Precipitation: 0.03 in Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 5:58 AM CDT

Temperature: 53.9 °F Dew Point: 53 °F Humidity: 97% Wind: SE at 3.0 mph Pressure: 29.56 in Hourly Precipitation: 0.06 in Graphs

Location: House Springs, House Springs, MO

Updated: 5:57 AM CDT

Temperature: 54.3 °F Dew Point: 54 °F Humidity: 99% Wind: South at 3.0 mph Pressure: 26.85 in Hourly Precipitation: 0.01 in Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 5:58 AM CDT

Temperature: 53.7 °F Dew Point: 53 °F Humidity: 96% Wind: SSE at 3.9 mph Pressure: 29.62 in Hourly Precipitation: 0.02 in Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 5:58 AM CDT

Temperature: 54.1 °F Dew Point: 53 °F Humidity: 97% Wind: SW at 5.4 mph Pressure: 29.66 in Hourly Precipitation: 0.00 in Graphs

Location: Cathedral Drive, Saint Louis, MO

Updated: 5:56 AM CDT

Temperature: 54.7 °F Dew Point: 54 °F Humidity: 97% Wind: North at - Pressure: 29.64 in Hourly Precipitation: 0.00 in Graphs

Location: Devall's Backyard, Waterloo, IL

Updated: 5:50 AM CDT

Temperature: 55.0 °F Dew Point: 54 °F Humidity: 97% Wind: North at 6.0 mph Pressure: 29.58 in Hourly Precipitation: - Graphs

Location: Brookton Oaks Drive, Cedar Hill, MO

Updated: 5:57 AM CDT

Temperature: 54.1 °F Dew Point: 52 °F Humidity: 92% Wind: North at - Pressure: 29.46 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 5:45 AM CDT

Temperature: 55.4 °F Dew Point: 54 °F Humidity: 94% Wind: SSE at 13.0 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Graphs

Location: Lakeview Ridge Drive, Fenton, MO

Updated: 5:56 AM CDT

Temperature: 55.2 °F Dew Point: 51 °F Humidity: 86% Wind: North at - Pressure: 29.60 in Hourly Precipitation: - Graphs

Location: Gedern Village, Columbia, IL

Updated: 5:57 AM CDT

Temperature: 54.9 °F Dew Point: 53 °F Humidity: 95% Wind: ESE at 3.0 mph Pressure: 29.58 in Hourly Precipitation: 0.00 in Graphs

Location: MesoWest, Columbia, IL

Updated: 5:25 AM CDT

Temperature: 54 °F Dew Point: 53 °F Humidity: 95% Wind: SW at 7 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: APRSWXNET, Waterloo, IL

Updated: 5:35 AM CDT

Temperature: 53 °F Dew Point: 51 °F Humidity: 94% Wind: SW at 1 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Graphs

Location: Deerpath Acres Court, Saint Louis, MO

Updated: 5:56 AM CDT

Temperature: 54.5 °F Dew Point: 52 °F Humidity: 92% Wind: North at - Pressure: 29.58 in Hourly Precipitation: - Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 5:58 AM CDT

Temperature: 54.3 °F Dew Point: 54 °F Humidity: 98% Wind: SSE at 5.6 mph Pressure: 29.59 in Hourly Precipitation: 0.03 in Graphs

Location: Whipporwill Lane, Festus, MO

Updated: 5:57 AM CDT

Temperature: 54.1 °F Dew Point: 53 °F Humidity: 97% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service St Louis MO 
241 am CDT Sat Apr 25 2015 


Short term: (through this evening) 
issued at 240 am CDT Sat Apr 25 2015 


Well advertised storm system will bring two rounds of showers and 
thunderstorms to the County Warning Area over the next 12 hours. The first round is 
just now taking shape as warm advection increases ahead of the 
shortwave now lifting from the Southern Plains into the lower 
Missouri River valley. Surface low pressure depticted by model 
guidance the past few days seems to be associated with well defined 
mesoscale convective vortex on regional radar currently spinning in far southeast Nebraska. 
Showers and thunderstorms should continue to develop from northwest 
Missouri to southeast Missouri and lift north through the predawn 
hours. Dry slot will push through the southeastern half of the County Warning Area 
ahead of the low pressure this morning and early afternoon. This 
will cause the band of warm advection showers and thunderstorms to 
steadily March northeast of the County Warning Area. It will also set the stage for 
at least some breaks in the cloud cover south of Interstate 70 and 
instability to increase this afternoon. 


The second round of precipitation today will take shape later this 
morning and into the afternoon as the low pressure center traverses 
east-southeast across the County Warning Area. Rain showers and isolated 
thunderstorms will accompany the low pressure center (mcv) and 
additional thunderstorm development is likely ahead of and to the 
south of the surface low. Storm Prediction Center continues to highlight the likelihood 
of severe thunderstorm development this afternoon, mainly southeast 
of the St. Louis Metro. Latest explicit model guidance depicts 
descrete storm development between 2 PM and 4 PM just south of St. 
Louis, with this activity exiting the County Warning Area shortly after 7 PM. Large 
hail and damaging wind gusts will be the primary threats with the 
supercells this afternoon and early this evening. The threat of 
tornadoes is more conditional and will likely hinge on how much 
instability can be realized ahead of the low and if the surface 
winds can remain backed across this area. 


Cvking 


Long term: (tonight through friday) 
issued at 240 am CDT Sat Apr 25 2015 


Showers will come to an end from northwest to southeast this 
evening and clearing is still expected on Sunday with below normal 
temperatures. Rest of the forecast remains unchanged with 
temperatures gradually returning to normal by the end of the week 
and precipitation chances remaining low. 


Cvking 


&& 


Aviation: (for the 06z tafs through 06z Saturday night) 
issued at 1145 PM CDT Fri Apr 24 2015 


MVFR cigs are in the process of overspreading the County Warning Area attm...and 
latest met and mav MOS still strongly suggest that this 
deterioration will continue into IFR cigs during the predawn 
hours as the persistent low level warm air advection increases the low level 
moisture in the region. A few hit and miss showers have formed 
over NE MO the last couple of hours, with the anticipation that 
there will be a general increase in coverage of showers...as well 
as thunderstorms...during the predawn hours as forcing via low 
level jet and upper level low ramp up the vertical motion across 
the Mississippi Valley. 00z guidance is a bit further south with 
track of low, which would keep uin in IFR conditions and precip throughout 
the day, with only limited improvement at kcou and the stl Metro 
area. Still appears that there will be a narrow window for 
redevelopment of thunderstorms in the stl area during the early 
afternoon, and have continued to highlight with thunderstorms in the vicinity attm. 


Specifics for kstl: ceiings expected to drop below 1000 feet 
during the predawn hours, with showers and a few thunderstorms 
developing by around 09z. Anticipate that the early morning 
convection will advect out of the region during the early morning, 
with ceilings slowly improving to MVFR as surface low works into 
the area from mid MO. Have maintained a mention of some 
thunderstorm redevelopment during the early afternoon in the form 
of thunderstorms in the vicinity...hoping later shifts will be able to refine the location 
and intensity of this redevelopment. 


Truett 


&& 


Preliminary point temperatures/pops: 
Saint Louis 70 47 62 41 / 80 70 0 0 
Quincy 58 40 60 38 / 80 40 0 0 
Columbia 68 45 62 39 / 70 30 0 5 
Jefferson City 71 46 62 41 / 70 30 5 5 
Salem 65 46 61 39 / 80 70 0 0 
Farmington 75 48 61 39 / 60 40 5 5 


&& 


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


$$ 


Weather forecast office lsx 












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