Sullivan, Missouri Weather Conditions

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Current Conditions

  • 39°
  • Clear
  • Wind: SSE 8 mph
  • Humidity: 56%
  • Visibility: 10.0 miles
  • Dew Point: 25°
  • Pressure: 30.14 in. 0
  • Heat Index: 34

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Next 12 Hours

9  am
12  pm
3  pm
6  pm
9  pm
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Partly Cloudy
Partly Cloudy
41°
54°
60°
58°
52°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Chance of Rain
  • High: 62 °
  • Low: 38 °
  • Chance of Rain
  • Monday
  • Clear
  • High: 69 °
  • Low: 47 °
  • Clear
  • Tuesday
  • Clear
  • High: 76 °
  • Low: 49 °
  • Clear
  • Wednesday
  • Clear
  • High: 78 °
  • Low: 61 °
  • Clear
  • Thursday
  • Chance of a Thunderstorm
  • High: 76 °
  • Low: 52 °
  • Chance of T-Storms

Forecast for Sullivan, Missouri

Updated: 4:50 AM CDT on January 29, 2015

  • Sunday

    Partly cloudy this morning. Increasing clouds with periods of showers this afternoon. Thunder possible. High 62F. Winds SSW at 10 to 20 mph. Chance of rain 50%.

  • Sunday Night

    Some clouds this evening will give way to mainly clear skies overnight. Low 38F. Winds WNW at 5 to 10 mph.

  • Monday

    Sunny along with a few clouds. High 69F. Winds WSW at 5 to 10 mph.

  • Monday Night

    Clear skies. Low 47F. Winds SSW at 5 to 10 mph.

  • Tuesday

    Mostly sunny skies. High 76F. Winds WNW at 5 to 10 mph.

  • Tuesday Night

    A mostly clear sky. Low 49F. Winds light and variable.

  • Wednesday

    A mainly sunny sky. High 78F. Winds SSE at 10 to 20 mph.

  • Wednesday Night

    A few clouds overnight. Low 61F. Winds S at 5 to 10 mph.

  • Thursday

    Isolated thunderstorms in the morning, then skies turning partly cloudy late. High 76F. Winds SSW at 10 to 15 mph. Chance of rain 30%.

  • Thursday Night

    Rain early...then remaining cloudy with showers late. Low 52F. Winds NW at 5 to 10 mph. Chance of rain 70%.

  • Friday

    Becoming partly cloudy after some morning light rain. High 62F. Winds NW at 10 to 20 mph. Chance of rain 60%.

  • Friday Night

    Some clouds early will give way to generally clear conditions overnight. Low around 40F. Winds N at 10 to 15 mph.

  • Saturday

    Mainly sunny. High 62F. Winds NW at 5 to 10 mph.

  • Saturday Night

    Mostly clear. Low 41F. Winds light and variable.

  • Sunday

    A few clouds from time to time. High 64F. Winds SSE at 10 to 15 mph.

  • Sunday Night

    Mostly clear skies early will give way to occasional showers later during the night. Low 48F. Winds SSE at 5 to 10 mph. Chance of rain 40%.

  • Monday

    Becoming partly cloudy after some morning light rain. High 68F. Winds S at 10 to 20 mph. Chance of rain 60%.

  • Monday Night

    Partly cloudy skies early. Thunderstorms likely late. Low 57F. Winds S at 5 to 10 mph. Chance of rain 80%.

  • Tuesday

    Thunderstorms in the morning, then partly cloudy late. High 66F. Winds SSW at 10 to 15 mph. Chance of rain 80%.

  • Tuesday Night

    Cloudy with occasional rain showers. Low 51F. Winds SSW at 5 to 10 mph. Chance of rain 50%.

  • Wednesday

    Partly cloudy early followed by mostly cloudy skies and a few showers later in the day. High 66F. Winds SSW at 10 to 15 mph. Chance of rain 30%.

  • Wednesday Night

    Mostly cloudy. Low around 45F. Winds SW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Lake St Clair, Saint Clair, MO

Updated: 8:26 AM CDT

Temperature: 40.1 °F Dew Point: 27 °F Humidity: 60% Wind: South at 11.4 mph Pressure: 30.01 in Hourly Precipitation: - Windchill: 33 °F Graphs

Location: St. Clair, Saint Clair, MO

Updated: 8:35 AM CDT

Temperature: 41.0 °F Dew Point: 27 °F Humidity: 58% Wind: South at 5.0 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Parkway Village, St Clair, MO

Updated: 8:40 AM CDT

Temperature: 41.5 °F Dew Point: 24 °F Humidity: 50% Wind: SE at 8.3 mph Pressure: 29.45 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: 63084, Union, MO

Updated: 8:35 AM CDT

Temperature: 38.2 °F Dew Point: 24 °F Humidity: 58% Wind: SSE at 4.0 mph Pressure: 30.14 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: SE Owensville, Owensville, MO

Updated: 8:33 AM CDT

Temperature: 40.3 °F Dew Point: 24 °F Humidity: 52% Wind: SSW at 3.2 mph Pressure: 29.84 in Hourly Precipitation: - Windchill: 38 °F Graphs

Location: Gerald, Gerald, MO

Updated: 8:33 AM CDT

Temperature: 39.9 °F Dew Point: 25 °F Humidity: 55% Wind: SSE at 9.0 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Grandview Farms, Union, MO

Updated: 8:40 AM CDT

Temperature: 40.5 °F Dew Point: 28 °F Humidity: 60% Wind: SE at 4.0 mph Pressure: 29.39 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Cuba, Cuba, MO

Updated: 8:11 AM CDT

Temperature: 38.7 °F Dew Point: 24 °F Humidity: 54% Wind: SW at 9.4 mph Pressure: 29.86 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: Catawissa, MO

Updated: 8:40 AM CDT

Temperature: 38.2 °F Dew Point: 27 °F Humidity: 64% Wind: South at 2.0 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Second Creek, Drake, MO

Updated: 8:40 AM CDT

Temperature: 40.1 °F Dew Point: 26 °F Humidity: 55% Wind: South at 8.2 mph Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: new haven, New Haven, MO

Updated: 8:39 AM CDT

Temperature: 39.6 °F Dew Point: 27 °F Humidity: 60% Wind: SSW at 10.0 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: APRSWXNET Potosi MO US, Potosi, MO

Updated: 7:45 AM CDT

Temperature: 37 °F Dew Point: 26 °F Humidity: 64% Wind: SSE at 18 mph Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 27 °F 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 
651 am CDT sun Mar 29 2015 


Short term: (through late this afternoon) 
issued at 324 am CDT sun Mar 29 2015 


Main forecast issues today are the chance of rain and the amount 
of temperature moderation. Mid level based showers have been slowly 
increasing in coverage from western Iowa into eastern Nebraska in 
association with strong warm advection and large scale ascent in 
advance of a digging trof. Virtually all the guidance has this 
trend continuing this morning as showers spread into northeast MO 
and west central Illinois and then gradually backbuild some into central 
MO this afternoon. Temperatures today should be a good deal warmer 
than yesterday thanks to gusty southerly winds and warm advection 
ahead of the encroaching cold front, but will still be a bit below 
average for late March. 


Glass 


Long term: (tonight through saturday) 
issued at 324 am CDT sun Mar 29 2015 


A few lingering showers may affect parts of southeast MO and 
southwest Illinois early this evening. Otherwise the cold front will be 
entering the St. Louis area early tonight and settle into the 
lower MS and Tennessee Valley region by Monday morning as weak high 
pressure builds into the area. The center of the high will settle 
south and southeastward on Monday with surface winds backing to 
southwesterly and the development of decent warm air advection from late morning 
into the afternoon. Temperatures should respond favorably warming 
to seasonable levels. Surface winds remain southwesterly Monday 
night into early Tuesday and the GFS at least thinks this may push 
some stratus into the area. The flow however quickly veers above 
the surface to westerly and northwesterly and this is not a 
typical scenario for seeing stratus and low level moisture return 
as aggressively as the GFS thinks. Another weak cold front moves 
into the area on Tuesday and moisture ahead of it remains poor in 
quality and shallow. This front settles southward into the lower 
MS and TV valley are Tuesday night as high pressure builds 
southeastward through the Great Lakes into the Ohio Valley. Low 
level moisture return and quality should improve Wednesday into 
Wednesday night however it will be a slow process as the moisture 
initially remains quite shallow. 


The threat of showers and thunderstorms in the Wednesday night 
through Friday period still looks on track although there remains 
uncertainty with the progress and position of the associated cold 
front and potential development of a migrating frontal low 
pressure wave Thursday night into Friday. These variances in the 
deterministic models are at least partially due to the differences 
in the models with disturbances in the west-southwest flow aloft. 


Glass 


&& 


Aviation: (for the 12z tafs through 12z Monday morning) 
issued at 633 am CDT sun Mar 29 2015 


Fcst focus is on rain chances today. Strong upper lvl disturbance 
currently over the ern Dakotas will track east-southeast today. A cold front 
assoc with the upper lvl energy will slide southeast thru the terminals 
this aftn. A band of showers has dvlpd ahead of the front across 
cntrl/ern Iowa arcing back into N cntrl/northwest MO. This activity should 
continue to push east-southeast thru the mrng. Radar looks worse than reality 
as much of what is showing up is virga. The precip is originating 
from an 8-12kft ceiling so conditions should remain VFR with any rain 
that does reach the ground. KUIN should have a several hour window 
this mrng for sctrd -shras. Guidance indicates the precip will dry 
up as it attempts to reach the i70 corridor late this mrng with 
another batch dvlpng later this aftn. Very near i70. The threat of 
precip should exit southeast by 00z with clearing skies this evng. The 
pressure gradient is expected to strengthen today in advance of 
the cold front which will cause srly winds to gust 20-25 kts. 


Specifics for kstl: 


VFR fcst thru the prd. A cold front will combine with a strong 
upper lvl disturbance to produce sctrd VFR -shras this aftn. It's 
not out of the question that vsbys may drop into MVFR range if a 
heavier rain showers impacts the terminal. Srly winds will gust near 25 
kts today diminishing this evng. 


&& 


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


$$ 


Weather forecast office lsx 












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