Cold Temperatures and Some Snow

A strong cold front and low pressure system will press from the Central U.S. through the East over the next couple of days. The impressive cold front will allow a cold air mass to settle in east of the Rockies and numerous record low temperatures are likely the next few days, especially Wednesday morning. A streak of snow is also expected from the central Plains to northern New England. Read More >

Hazardous Weather Conditions

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Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

41°F

5°C

Humidity	65%
Wind Speed	N 9 mph
Barometer	30.06 in (1017.8 mb)
Dewpoint	30°F (-1°C)
Visibility	10.00 mi
Wind Chill	35°F (2°C)
Last update	20 Apr 5:51 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Extended Forecast for

Saint Louis MO

Freeze Warning April 21, 01:00am until April 21, 09:00am

Click here for hazard details and duration

Freeze Warning

Today

Showers
Likely then
Rain/Snow
High: 44 °F⇓
Tonight

Rain/Snow
Likely then
Frost
Low: 31 °F
Wednesday

Frost then
Slight Chance
Showers
High: 52 °F
Wednesday
Night

Partly Cloudy
then Areas
Frost
Low: 33 °F
Thursday

Frost then
Sunny
High: 58 °F
Thursday
Night

Partly Cloudy
then Slight
Chance
Showers
Low: 42 °F
Friday

Chance
Showers
High: 58 °F
Friday
Night

Showers
Likely
Low: 48 °F
Saturday

Slight Chance
Showers
High: 63 °F

Detailed Forecast

Today

Rain showers before 3pm, then rain and snow showers between 3pm and 5pm, then snow showers after 5pm. Temperature rising to near 44 by 10am, then falling to around 34 during the remainder of the day. North wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tonight

Rain and snow showers likely, mainly before 7pm. Widespread frost, mainly after 3am. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 31. West wind 7 to 11 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Wednesday

A 20 percent chance of showers after 1pm. Widespread frost, mainly before 8am. Otherwise, increasing clouds, with a high near 52. West wind 7 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

Areas of frost after 3am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 33. West wind 3 to 7 mph.

Thursday

Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 58. Calm wind becoming west 5 to 7 mph in the morning.

Thursday Night

A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 42.

Friday

A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.

Friday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

Saturday

A 20 percent chance of showers before 1pm. Partly sunny, with a high near 63.