Sullivan, Missouri Weather Conditions

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Current Conditions

  • 32°
  • Clear
  • Wind: SSE 4 mph
  • Humidity: 80%
  • Visibility: 10.0 miles
  • Dew Point: 27°
  • Pressure: 30.33 in. -
  • Heat Index: 29

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Next 12 Hours

9  am
12  pm
3  pm
6  pm
9  pm
Chance of Snow
Chance of Snow
Rain
Rain
Rain
Rain
Rain
Rain
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30°
39°
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41°
39°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Chance of Snow
  • High: 45 °
  • Low: 32 °
  • Chance of Snow
  • Sunday
  • Snow
  • High: 43 °
  • Low: 14 °
  • Snow
  • Monday
  • Partly Cloudy
  • High: 32 °
  • Low: 25 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 50 °
  • Low: 25 °
  • Partly Cloudy
  • Wednesday
  • Chance of Snow
  • High: 41 °
  • Low: 18 °
  • Chance of Snow

Forecast for Sullivan, Missouri

Updated: 9:00 AM CST on January 31, 2015

  • Saturday

    Overcast with a chance of snow and rain showers, then rain in the afternoon. High of 45F. Winds from the South at 5 to 10 mph. Chance of precipitation 90% .

  • Saturday Night

    Overcast with rain, then snow and a chance of rain after midnight. Low of 32F. Winds from the SE at 5 to 10 mph. Chance of precipitation 100% .

  • Sunday

    Overcast with snow and rain. Fog early. High of 43F. Winds from the SW at 5 to 15 mph. Chance of snow 80%.

  • Sunday Night

    Overcast with a chance of snow in the evening, then mostly cloudy. Low of 14F with a windchill as low as 1F. Breezy. Winds from the NNW at 15 to 20 mph. Chance of snow 30%.

  • Monday

    Partly cloudy. High of 32F. Winds from the North at 5 to 15 mph.

  • Monday Night

    Overcast in the evening, then mostly cloudy. Low of 25F with a windchill as low as 19F. Winds from the SSE at 5 to 10 mph.

  • Tuesday

    Overcast. High of 50F. Winds from the SSW at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy. Fog overnight. Low of 25F. Winds from the SW at 5 to 15 mph.

  • Wednesday

    Overcast with a chance of rain in the afternoon. Fog early. High of 41F. Winds from the WSW at 5 to 10 mph shifting to the North in the afternoon. Chance of rain 20%.

  • Wednesday Night

    Overcast with a chance of snow. Low of 18F with a windchill as low as 9F. Winds from the NNE at 10 to 15 mph. Chance of snow 50% with accumulations up to 1 in. possible.

  • Thursday

    Partly cloudy. High of 30F with a windchill as low as 7F. Winds from the NE at 10 to 15 mph.

  • Thursday Night

    Clear. Low of 16F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 36F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 27F with a windchill as low as 19F. Winds from the South at 5 to 10 mph.

  • Saturday

    Clear. High of 48F. Winds from the SW at 5 to 15 mph.

  • Saturday Night

    Clear. Low of 37F. Winds from the SW at 5 to 10 mph.

  • Sunday

    Clear. High of 45F. Winds from the WSW at 5 to 10 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 34F. Winds less than 5 mph.

  • Monday

    Clear. Fog early. High of 52F. Winds less than 5 mph.

  • Monday Night

    Clear. Fog overnight. Low of 34F. Winds less than 5 mph.

  • Tuesday

    Clear. Fog early. High of 52F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Fog overnight. Low of 34F with a windchill as low as 25F. Winds from the NW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Lake St Clair, Saint Clair, MO

Updated: 8:25 AM CST

Temperature: 35.1 °F Dew Point: 27 °F Humidity: 72% Wind: Calm Pressure: 30.23 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: Parkway Village, St Clair, MO

Updated: 8:33 AM CST

Temperature: 35.1 °F Dew Point: 24 °F Humidity: 64% Wind: SE at 2.2 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: 63084, Union, MO

Updated: 8:31 AM CST

Temperature: 30.9 °F Dew Point: 25 °F Humidity: 77% Wind: Calm Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: APRSWXNET Union MO US, Union, MO

Updated: 8:01 AM CST

Temperature: 30 °F Dew Point: 25 °F Humidity: 80% Wind: Calm Pressure: 30.35 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Gerald, Gerald, MO

Updated: 8:20 AM CST

Temperature: 35.5 °F Dew Point: 25 °F Humidity: 66% Wind: SSE at 5.0 mph Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Clover Bottom, MO, Washington, MO

Updated: 8:33 AM CST

Temperature: 35.1 °F Dew Point: 0 °F Humidity: 22% Wind: Calm Pressure: 30.46 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Cuba, Cuba, MO

Updated: 8:25 AM CST

Temperature: 35.1 °F Dew Point: 23 °F Humidity: 60% Wind: SSW at 4.2 mph Pressure: 30.00 in Hourly Precipitation: - Windchill: 31 °F Graphs

Location: Catawissa, MO

Updated: 8:33 AM CST

Temperature: 29.9 °F Dew Point: 26 °F Humidity: 86% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Second Creek, Drake, MO

Updated: 8:33 AM CST

Temperature: 35.3 °F Dew Point: 26 °F Humidity: 70% Wind: Calm Pressure: 30.37 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: MesoWest GRSMT1 MO US UPR, Pacific, MO

Updated: 7:30 AM CST

Temperature: 30 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 30 °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 
600 am CST Sat Jan 31 2015 


Short term: (through late this afternoon) 
issued at 327 am CST Sat Jan 31 2015 


Mid and high clouds to remain over region ahead of main weather 
system. In the meantime, low level moisture and warm air advection 
are on the increase on nose of low level jet. So rain will continue 
to develop and spread eastward through much of our forecast area 
today, especially north and west of St. Louis Metro area. It will 
mainly be in the form of rain but could see a brief period of snow 
mixed in across central and northeast Missouri this morning. As for 
high temperatures, they will be in the upper 30s to mid 40s. 


Byrd 


Long term: (tonight through friday) 
issued at 327 am CST Sat Jan 31 2015 


(tonight-monday) 


Obviously, main concern is ptypes and potential snowfall amounts 
with storm system pushing into the region. 00z runs have continued 
warming trend of low level temp profile in advance of the storm, and 
given that this has been the trend for 4 straight model cycles 
forecast has been adjusted "warmer" as well. This adjustment will 
manifest itself in a slower transition to all snow, and reduced 
snowfall amounts over the central third of the County Warning Area...along the I-70 
corridor. 


Certainly, best area for accumulations in our County Warning Area will be our far 
northern counties, and the key to the forecast is how soon the 
precip transitions from rain to snow. NAM forecast sounding for uin 
indicates some low level cooling that would cause the switch to 
occur as early as 03z, while GFS is warmer/slower with cooling. 
It's also interesting, and perhaps a bit worrisome from a heavy 
snowfall viewpoint, that both the NAM and GFS are nearly isothermal 
at 0c at 12z up to 900mb, and a slight wiggle either warmer or 
colder will have a dramatic impact on when the changeover occurs and 
ultimately how much snowfall. 


Based on this uncertainty have tried to be a bit conservative with 
snowfall forecasts across the north, but working the numbers in 
various ways still yields snowfall totals of around or just above 6 
inches along and north of an Edina-Mount Sterling line, with 
snowfall totals dropping off quickly as you head south...to no more 
than an inch along a Mexico-Vandalia Illinois line. Based on these 
forecast amounts, will go with a Winter Storm Warning for our far 
northern counties for tonight into Sunday evening, with roughly a 2 
County "buffer" of a Winter Weather Advisory for lesser snowfalls of 
2-4 inches for the same time period. Along and south of 
I-70...snowfall totals should be under an inch. These snowfall 
totals include any snowfall from tonight, through Sunday, and into 
early Sunday evening. 


This is our best estimate of expected snowfall with this storm, and 
its important to point out that all indications are that there will 
be an extremely tight snowfall gradient from extreme southeast 
Iowa into northern MO and west central IL, with snowfall totals 
varying greatly over a very short distance. We've attempted to 
reflect this gradient in the forecast, but in all likelihood the 
distance between several inches of snow and just a dusting will be 
much tighter than indicated. Any slight change in the expected 
gradient will have a very large impact on snowfall totals at any 
given location in the warning and advisory areas. 


Winds are forecast to increase fairly dramatically in the wake of 
the surface low Sunday afternoon and evening over northern parts 
of the County Warning Area. Given that much of the snowfall will be quite wet 
don't believe that blowing snow will be much of an issue, but will 
be watching out for this threat as some of the accumulating snow 
towards the end of the event becomes much drier. 


The light snow that lingers into Sunday evening should end no later 
than midnight, followed by a cold Canadian high that will drop lows 
into the single digits and teens by Monday morning. 00z guidance 
supports going forecast trends that temps will remain below normal 
on Monday as the high pushes into the mid-Mississippi Valley, and 
this will be followed by a fairly strong...but brief...warmup on 
Tuesday with highs rebounding into the upper 30s and 40s. 


(Wednesday-friday) 


Shortwave rotating through base of broad trof over the Continental U.S. Will 
usher in another shot of cold air for the last half of the work 
week. By Thursday, highs will only be in the 20s to lower 30s, with 
only a modest rebound in temps by Friday. Have continued some 
slight chance pops with passage of shortwave on Wednesday, with 
low pops continuing over southern sections of the County Warning Area into 
Thursday as GFS suggests this area could be on northern fringes 
of system working its way from the Southern Plains into the southeast 
U.S. 


Truett 


&& 


Aviation: (for the 12z tafs through 12z Sunday morning) 
issued at 552 am CST Sat Jan 31 2015 


Rain over western and southwestern Missouri to continue developing 
and spreading east across forecast area today. VFR cigs to lower 
to MVFR/IFR by midday when main area of rain moves into taf sites. 
Otherwise, dealing with south to southwest winds, which will back 
to the southeast as warm front associated with system lifts north 
through forecast area by this evening. Precipitation to remain as 
rain for taf sites along I-70 corridor through forecast period. However, 
KUIN to see colder air filter in by 03z Sunday with rain becoming 
mixed with snow, then change over to all snow by 09z Sunday. 


Specifics for kstl: 
rain over western and southwestern Missouri to continue developing 
and spreading east across forecast area today. VFR cigs to lower 
to MVFR by 22z Saturday when main area of rain moves into Metro area. 
Otherwise, dealing with south to southwest winds, which will back 
to the southeast as warm front associated with system lifts north 
through forecast area by 01z Sunday. Precipitation to remain as rain for 
through forecast period. 


Byrd 
&& 


Lsx watches/warnings/advisories: 
MO...Winter Weather Advisory from 9 PM this evening to 9 PM CST 
Sunday for Marion MO-Monroe MO-Pike MO-Ralls MO-Shelby MO. 


Winter Storm Warning from 9 PM this evening to 9 PM CST Sunday 
for Knox MO-Lewis MO. 


Illinois...Winter Weather Advisory from 9 PM this evening to 9 PM CST 
Sunday for Pike Illinois. 


Winter Storm Warning from 9 PM this evening to 9 PM CST Sunday 
for Adams Illinois-Brown Illinois. 


&& 


$$ 
Weather forecast office lsx 



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