US National Weather Service Saint Louis Missouri

While it'll be dry most of the time Wednesday, a few lingering showers are expected at various times throughout the day. A few weak thunderstorms are also possible across central and northeast MO during the afternoon, but strong or severe thunderstorms are not expected. Otherwise, expect warm and humid conditions during the afternoon, with mostly cloudy skies.

Rain will stay in the forecast, but chances will fall as we approach the weekend. Meanwhile temperatures will be on the way up. With fairly high humidity, it might feel a bit like summer this weekend.

Another day, another round of showers and storms. Once again, we're not expecting rain all day; There will be plenty of dry time, especially in the afternoon. That said, afternoon storms are possible so if you've got outdoor plans, make sure you've got a way to get inside quickly!

It's going to be a showery night, with perhaps some isolated thunderstorms Tuesday afternoon. Have a look at the graphic for more details regarding the latest forecast. #MOwx #ILwx #STLwx

Did you or any friends/relatives experience severe weather last night in the highlighted area? If so, please send us your reports! #mowx #ilwx #stlwx

If you're wanting some warmer weather and more sunshine, you'll soon get your wish. Wednesday and Thursday are expected to be a pair of days with exactly that. Until then, some morning fog today will give way to mostly cloudy skies with seasonable temps. #STLwx #MOwx #ILwx

Areas of fog will continue this morning for areas near and south of Interstate 70. Visibilities may be reduced to a half a mile or less at times. Some fog may freeze, causing slick spots mainly on bridges and overpasses. When driving, keep plenty of distance. Always use low beam headlights. Slower speeds will increase reaction time.

Areas of fog will develop by midnight across portions of northeast, central and southeast Missouri. Visibilities may be reduced to a half a mile or less at times. Some fog may freeze, causing slick spots mainly on bridges and overpasses. When driving, keep plenty of distance. Always use low beam headlights. Slower speeds will increase reaction time.

Mostly cloudy skies on Tuesday will give way to partly to mostly sunny skies by Wednesday. Otherwise, well above normal temperatures Wednesday and Thursday, then colder air returns by Friday after a cold front moves through region.

A storm system will bring snow showers to the area on Friday and Friday night. Light accumulations are expected with up to 2 possible in some spots.

The pleasant weather will end tomorrow as a cold front passes through MO and IL. This front will bring the chance of rain and gusty winds. Look up your forecast at mobile.weather.gov!

A narrow band of snow will move across northeastern Missouri and southwestern Illinois through late this evening, producing up to an inch of snow with locally higher amounts possible. Snow will fall through midnight, with the highest snowfall rates through 7 pm in Missouri, and 4pm and 9pm in Illinois. Where snow is heavy, visibilities could be restricted and untreated roads could become slippery, impacting the evening commute. If the location of the snow band shifts slightly to the north or south, snowfall accumulations could also shift.

Scattered snows showers, gusty winds, and much colder temperatures can be expected on Friday. One inch of snow accumulation is possible in isolated areas.

A southwest wind today will result in high temperatures 15 to 20 degrees above normal. Rain is expected on Thursday, especially across northeast MO and west central IL as a cold front moves southeastward through our area.

The mid-week warmth and don't stick around for long. We apologize in advance. Widespread rain looks likely Friday-Saturday, with some possibly receiving 1.5"+ of rain. NE MO and west-central IL may see a few mixed in, but little to no accumulation is expected.

While we can't prove the upcoming warm weather isn't just another example of #2020ing, we can't *not* prove it! Expect temps nearly 20F above normal tomorrow & Thursday. We also expect the big yellow ball in the sky (we seem to remember it as "the Sun") to return.

A cold front is expected to bring cold air and a chance of precipitation to the area Thursday into Friday, which could bring some wintry weather to the mid-Mississippi Valley. Several details remain uncertain right now, including storm intensity, surface temperatures, timing, and moisture, all of which will impact whether snow falls across our area. Check mobile.weather.gov for more details and updated forecasts.

UPDATE 10/27/2020 1:26 AM: Light freezing drizzle has been observed in a few areas tonight, with a light glaze on elevated surfaces. Most roads will remain ice-free, but we could see some patchy ice on overpasses and bridges, so please drive carefully! Please see the updated graphic below. #MOwx #ILwx

Areas of light snow have developed over western Missouri this evening and will slide northeast through the night, along and north of a Jefferson City to Pittsfield, IL line. It will mainly be all snow, though could see some sleet and rain mixed in at times. Expect all rain south of the Jefferson City/Pittsfield line. The warm ground should keep anything from freezing on roads, though could see isolated slick spots, so please drive carefully! Little or no additional accumulation expected.

Wednesday and Thursday will feature well above normal temperatures and sunny skies, which will make them prime candidates for outdoor activities. However, widespread rain will arrive during the day Friday and continue through sometime Saturday. A few flakes of snow could even mix in with the rain Friday night through Saturday morning across central and northeast Missouri, as well as west central Illinois late Saturday. Cooler temperatures are also expected Saturday through early next week. #MOwx #ILwx #STLwx

***Updated to only talk about Tue/Tue Night, see US National Weather Service Saint Louis Missouri facebook.com/NWSStLouis/ for updated forecast for tonight*** Rain will linger along and south of I-70 with the heaviest rain over portions of southeast Missouri and southern Illinois through Tuesday morning. Highs on Tuesday will be in the upper 30s to mid 40s. Mostly cloudy, dry and cold weather expected Tuesday night with lows in the upper 20s to upper 30s.

Fog will dissipate by mid to late morning, followed by decreasing clouds this afternoon. Temperatures today will be slightly warmer than yesterday, but the real warm-up begins tomorrow with highs expected to be 15-20 degrees above normal on Wednesday and Thursday. Rain returns on Friday and Friday Night.

A Dense Fog Advisory is in effect until 1000 am this morning across central Missouri. Widespread dense fog, with visibility as low as of a mile, will lead to poor driving conditions. Temperatures are expected to remain below freezing in these areas overnight, and roadways may become slippery (especially on bridges and overpasses). Exercise caution when driving through fog and stay alert for slippery conditions.

It's going to be a cloudy, cold, wet start to the week. Waves of rain will impact portions of eastern MO and western IL starting this morning and continuing through Tuesday night as temps remain chilly. Check you forecast at mobile.weather.gov!

A potent storm system is expected to move through the region during the middle of the week, likely bringing more widespread rain to much of Missouri and southern Illinois between late Wednesday and late Thursday. While forecast accumulations will be highly depending on the uncertain track of the storm, the potential exists for heavy rain in many areas, including a few thunderstorms. #MOwx #ILwx #STLwx

Light snow accumulations are expected in parts of northeast Missouri and west central Illinois today, primarily on grassy surfaces. Snow is expected to begin in places this morning, and continue on-and-off through the day and into the evening hours. Snow will likely mix with rain and sleet at times. While major impacts are not expected at this time, motorists are encouraged to drive with extra caution today. #MOwx #ILwx

A round of moderate to heavy rainfall is possible midweek. There is the potential for 1 to 3 inches of rain, along and south of I-70, with lesser amounts further north. The heaviest rain will fall Wednesday night through Thursday. Timing, location and strength of system is still hard to pin down at this time. Be sure to check back often for updates on this rainfall event.

Accumulations of an inch or less of snow will be possible Monday morning through Monday afternoon across portions of central Missouri through west-central Illinois. Accumulations will mainly be confined to elevated and grassy surfaces.

Precipitation will begin to move into our region Monday morning, overspreading the entire area by early afternoon. There is some uncertainty as to the northern extent in northern MO and central IL. The precipitation for most areas will fall as all rain. However, as colder air causes temperatures to slowly fall on Monday, precipitation is expected to mix with or change to snow for a time for much of northern MO and portions of central MO and IL, or areas to the north of the dashed line on the map. Where snow does fall, accumulations of less than an inch, mainly on grassy surfaces, are forecast. Elsewhere, a beneficial rainfall between 1/2" and 1" is expected.

If you liked the weather on Saturday, then you're in luck! This afternoon will be very similar, with cloudy skies, temps in the mid 40s to around 50 with northeast winds around 10 mph. Dry weather and clouds are also expected through much of tonight. #STLwx #MOwx #ILwx #MidMOwx

This week will start out cold and wet. Temperatures will be roughly 10-25 degrees below normal, and the chance of rain ramps up Monday morning and continues through Tuesday.

***POST OUTDATED*** There is a chance of light snow across portions of MO and IL on Monday. Accumulations will generally be an inch or less, and mainly occur on grassy and elevated surfaces.

Rain will develop and spread across the region beginning Sunday evening. The heaviest rain will fall Monday afternoon through Monday night before tapering off during the day on Tuesday. The highest amounts will be along and south of I-70 with widespread one inch amounts expected.