Hermann, Missouri Weather Conditions

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Current Conditions

  • 75°
  • Clear
  • Wind: SE 4 mph
  • Humidity: 94%
  • Visibility: 10.0 miles
  • Dew Point: 73°
  • Pressure: 29.95 in. 0

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Next 12 Hours

10  pm
1  am
4  am
7  am
10  am
Thunderstorm
T-storms
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
77°
79°
75°
77°
84°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Clear
  • High: 97 °
  • Low: 75 °
  • Clear
  • Friday
  • Clear
  • High: 97 °
  • Low: 73 °
  • Clear
  • Saturday
  • Clear
  • High: 97 °
  • Low: 73 °
  • Clear
  • Sunday
  • Clear
  • High: 100 °
  • Low: 72 °
  • Clear
  • Monday
  • Chance of a Thunderstorm
  • High: 95 °
  • Low: 72 °
  • Chance of a Thunderstorm

Forecast for Hermann, Missouri

Updated: 10:00 PM CDT on August 20, 2014

Heat advisory in effect until 7 PM CDT Sunday...
  • Wednesday

    Partly cloudy with thunderstorms in the afternoon. High of 95F with a heat index of 100F. Winds from the SW at 5 to 10 mph. Chance of rain 20%.

  • Wednesday Night

    Partly cloudy with thunderstorms and rain showers. Low of 75F. Winds from the SSW at 5 to 10 mph. Chance of rain 30%.

  • Thursday

    Clear. High of 97F with a heat index of 104F. Winds from the SW at 5 to 15 mph.

  • Thursday Night

    Clear. Low of 75F. Winds from the SW at 5 to 10 mph.

  • Friday

    Clear. High of 97F with a heat index of 102F. Winds from the SW at 5 to 10 mph.

  • Friday Night

    Clear. Low of 73F. Winds from the SW at 5 to 10 mph.

  • Saturday

    Clear. High of 97F with a heat index of 102F. Winds from the SW at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 73F. Winds from the SW at 5 to 10 mph.

  • Sunday

    Clear. High of 100F. Winds from the SW at 5 to 10 mph.

  • Sunday Night

    Clear in the evening, then partly cloudy with a chance of a thunderstorm and rain. Low of 72F. Winds less than 5 mph. Chance of rain 20%.

  • Monday

    Mostly cloudy with a chance of a thunderstorm and rain. High of 95F. Winds less than 5 mph. Chance of rain 20%.

  • Monday Night

    Partly cloudy. Low of 72F. Winds from the SE at 5 to 10 mph.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm. High of 91F. Winds less than 5 mph. Chance of rain 30%.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm. Low of 72F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.

  • Wednesday

    Mostly cloudy with a chance of a thunderstorm. High of 93F. Winds from the South at 5 to 10 mph. Chance of rain 40%.

  • Wednesday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 66F. Winds from the SW at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.4 in. possible.

  • Thursday

    Mostly cloudy with a chance of a thunderstorm. High of 82F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy. Fog overnight. Low of 61F. Winds less than 5 mph.

  • Friday

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

  • Friday Night

    Clear. Low of 61F. Winds less than 5 mph.

  • Saturday

    Clear. High of 84F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 61F. Winds less than 5 mph.

  • Sunday

    Clear. High of 86F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 61F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Heat Advisory  Statement as of 3:33 PM CDT on August 20, 2014


... Heat advisory remains in effect until 7 PM CDT Sunday...

* timing... dangerous levels of heat and humidity will continue for
the rest of the week and into the upcoming weekend.

* Heat index values... up to 106.

* Impacts... the combination of hot temperatures and high
humidity will likely lead to an increased risk of heat-
related stress and illness. The very Young... the elderly...
those without air conditioning... and those participating in
strenuous outdoor activities will be the most susceptible.
Also... car interiors can reach lethal temperatures in a matter
of minutes. Beat the heat... check the backseat! Never leave
children or pets unattended in a vehicle... not even for a
minute.

Precautionary/preparedness actions...

Take extra precautions if you work or spend time outside. When
possible... reschedule strenuous activities to the early morning
or evening. Know the signs and symptoms of heat exhaustion and
heat stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work... the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency. Call 9-1-1 immediately.





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: MesoWest GASCN1 MO US UPR, Hermann, MO

Updated: 9:30 PM CDT

Temperature: 72 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: St. George, Hermann, MO

Updated: 11:20 PM CDT

Temperature: 73.8 °F Dew Point: 73 °F Humidity: 96% Wind: North at 3.1 mph Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 70 °F Graphs

Location: BIG SPRING, MO

Updated: 11:20 PM CDT

Temperature: 73.0 °F Dew Point: 71 °F Humidity: 94% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest BERGR1 MO US UPR, Berger, MO

Updated: 10:25 PM CDT

Temperature: 70 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: MesoWest CHAMO1 MO US UPR, Morrison, MO

Updated: 10:00 PM CDT

Temperature: 70 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Macedonia/Post Oak, Warrenton, MO

Updated: 11:20 PM CDT

Temperature: 73.5 °F Dew Point: 72 °F Humidity: 94% Wind: ESE at 1.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 70 °F Graphs

Location: new haven, New Haven, MO

Updated: 11:19 PM CDT

Temperature: 74.0 °F Dew Point: 72 °F Humidity: 93% Wind: SE at 2.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Second Creek, Drake, MO

Updated: 11:20 PM CDT

Temperature: 71.6 °F Dew Point: 70 °F Humidity: 96% Wind: ESE at 2.6 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Gerald, Gerald, MO

Updated: 8:22 PM CDT

Temperature: 72.5 °F Dew Point: 71 °F Humidity: 95% Wind: East at 2.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Warrenton DALY Weather Report, Warrenton, MO

Updated: 11:18 PM CDT

Temperature: 73.7 °F Dew Point: 70 °F Humidity: 88% Wind: SE at 1.0 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Hase's Lair, Warrenton, MO

Updated: 11:15 PM CDT

Temperature: 73.4 °F Dew Point: 72 °F Humidity: 94% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 70 °F Graphs

Location: Ken's Backyard Weather, Warrenton, MO

Updated: 11:15 PM CDT

Temperature: 80.8 °F Dew Point: 74 °F Humidity: 79% Wind: Calm Pressure: 29.24 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Fence Post Weather, Warrenton, MO

Updated: 11:11 PM CDT

Temperature: 74.0 °F Dew Point: 72 °F Humidity: 92% Wind: South at 2.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: ALSAT Wireless, Montgomery City, MO

Updated: 11:20 PM CDT

Temperature: 72.1 °F Dew Point: 71 °F Humidity: 95% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ft. Russell, Leslie, MO

Updated: 11:20 PM CDT

Temperature: 74.7 °F Dew Point: 48 °F Humidity: 39% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Maya Creek, Fulton, MO

Updated: 11:06 PM CDT

Temperature: 71.8 °F Dew Point: 72 °F Humidity: 99% Wind: Calm Pressure: 29.90 in Hourly Precipitation: - Heat Index: - Graphs

Location: Klebba Drive, Linn, MO

Updated: 11:10 PM CDT

Temperature: 74.1 °F Dew Point: 72 °F Humidity: 92% Wind: SSE at 2.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: MesoWest BONML1 MO US UPR, Tebbetts, MO

Updated: 9:40 PM CDT

Temperature: 70 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - 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 
652 PM CDT Wed Aug 20 2014 


Short term: (through late tonight) 
issued at 312 PM CDT Wed Aug 20 2014 


Isolated sh/ts are possible tonight across parts of extreme 
northeastern MO through west central and southwest Illinois. 
Precipitation should tend to lift northeastward with time. 


Kanofsky 


Long term: (thursday through next wednesday) 
issued at 312 PM CDT Wed Aug 20 2014 


The primary forecast concern over the next several days is the 
increasing heat and humidity. An upper level ridge will build 
across the region and remain in place through the weekend. 850 mb 
temperatures are forecast to rise to 20-24 deg c through early 
next week, which translates to highs in the mid to upper 90s. 
South to southwest surface winds will continue to transport a 
moist air mass into the region, keeping dew points in the mid 60s 
to mid 70s. 


The combination of hot temperatures and a humid air mass will 
produce heat index values over 100 deg f for 4 days over most of 
the lsx cwa, and some areas should reach values of 105-107 at 
times. The going heat advisory and excessive heat warning both 
still look reasonable given concerns about dew points mixing out 
near the Ozarks. There is some concern that the heat advisory may 
need to be extended farther north because forecast heat index 
values are just shy of the 4-day duration criteria across the 
northern County Warning Area (the difference is within the margin of error for 
T/TD forecasting) and this has been a fairly mild Summer overall. 
After coordination with neighboring offices, we will hold off on 
expanding the heat advisory northward and let the next shift take 
another look. 


This has been a fairly mild Summer so far, and most people have not 
yet become acclimated to extended periods of hot/humid weather. Heat 
safety tips are available here: www.NWS.NOAA.Gov/om/heat/index.Shtml 


The 12z model runs depict significant differences regarding how the 
ridge breaks down next week in response to a strong trough moving 
into the northwestern US. At this time, it looks like the next 
opportunity for widespread organized rainfall would be associated 
with that pattern transition during middle/late next week. 


Kanofsky 


&& 


Aviation: (for the 00z tafs through 00z Thursday evening) 
issued at 647 PM CDT Wed Aug 20 2014 


Mainly VFR conditions are expected through the valid taf period with 
winds during the day tomorrow veering to the southwest. Exception 
could be showers/storms through early this evening which are 
currently entering east-central Missouri. Atmosphere will be quite 
unstable out ahead of this activity but current radar imagery is 
depicting outflow that is outracing the leading edge of convection 
leading to weakening. Not sure if any of this activity will make 
it to the Metro taf sites...but did add a thunderstorms in the vicinity group through 0200 
UTC this evening to account for this possibility at ksus and kstl. 




Specifics for kstl: 


Mainly VFR conditions are expected through the valid taf period with 
winds during the day tomorrow veering to the southwest and backing 
to the south tomorrow evening. Exception could be showers/storms 
through early this evening which are currently entering east- 
central Missouri. Atmosphere will be quite unstable out ahead of 
this activity but current radar imagery is depicting outflow that 
is outracing the leading edge of convection leading to weakening. 
Not sure if any of this activity will make it Lambert...but did add a 
thunderstorms in the vicinity group through 0200 UTC this evening to account for this 
possibility. 




Gosselin 


&& 


Lsx watches/warnings/advisories: 
MO...heat advisory until 7 PM CDT Sunday for Audrain MO-Boone MO- 
Callaway MO-Cole MO-Franklin MO-Gasconade MO-Jefferson MO- 
Lincoln MO-Madison MO-Moniteau MO-Montgomery MO-Osage MO- 
St. Charles MO-St. Francois MO-Ste. Genevieve MO-Warren MO. 


Excessive heat warning until 7 PM CDT Sunday for St. Louis city 
MO-St. Louis MO. 


Illinois...heat advisory until 7 PM CDT Sunday for Bond Illinois-Calhoun Illinois- 
Clinton Illinois-Greene Illinois-Jersey Illinois-Macoupin Illinois-Marion Illinois-Monroe 
Illinois-Randolph Illinois-Washington Illinois. 


Excessive heat warning until 7 PM CDT Sunday for Madison IL-St. 
Clair Illinois. 


&& 


$$ 


Weather forecast office lsx 












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