Forecast and Conditions for Saint Louis, Missouri

Updated: 2:29 AM CDT on July 20, 2008
Observed at Shaw/Tower Grove, St. Louis, Missouri
Temperature 81.8 °F / 27.7 °C
Humidity 68%
Dew Point 70 °F / 21 °C
Wind WNW at 0.0 mph / 0.0 km/h
Pressure 29.51 in / 999.2 hPa (Steady)
Conditions Mostly Cloudy
Visibility 10.0 miles / 16.1 kilometers
Clouds Mostly Cloudy (BKN) : 10000 ft / 3048 m
Yesterday's Maximum 94 °F / 34 °C
Yesterday's Minimum 76 °F / 24 °C
Normal high 90 °F / 32 °C
Normal low 71 °F / 21 °C
Record high 110 °F / 43 °C (1934)
Record low 58 °F / 14 °C (1929)
Yesterday's Heating Degree Days 0
Yesterday's Cooling Degree Days 20
Sunrise05:52 AM (CDT)
Sunset08:21 PM (CDT)
Moon Rise09:47 PM (CDT)
Moon Set08:05 AM (CDT)
Moon Phase
Heat Advisory
Statement as of 3:43 PM CDT on July 19, 2008


... Heat advisory in effect from 12 PM Sunday to 6 PM CDT Monday...

The National Weather Service in St Louis has issued a heat
advisory... which is in effect from 12 PM Sunday to 6 PM CDT
Monday.

The hottest weather so far this Summer will become established
across the area Sunday into Monday. The impact of the urban heat
island will result in high temperatures in the upper 90s in the
city of St Louis on both days. These hot temperatures combined
with high levels of humidity will result in afternoon heat index
values topping out around 105 degrees.

A heat advisory is issued when high temperature and humidity
levels are expected to make it feel like it is 105 degrees or
greater. People in the advisory area are advised to avoid
prolonged work in the sun... or in poorly ventilated areas. Also...
keep plenty of liquids on hand and try to stay in an air
conditioned environment.

For people in the St. Louis metropolitan area needing information
on cooling centers or energy assistance related to the excessive
heat... you can call operation weather survival at the United way
of greater St. Louis. The number is 800-427-4626.


Glass


Forecast as of 2:00 am CDT on July 20, 2008

Now
Isolated showers have developed generally along and south of the Missouri River...and north of a line from Steelville to Farmington Missouri. These showers are generally very light...but there are a few that could produce a brief period of moderate rain. A few lightning flashes will also be possible. The showers will likely continue to move east across the area through the remainder of the nighttime hours.
Forecast as of 1:20 am CDT on July 20, 2008

Heat advisory in effect from noon today to 6 PM CDT Monday...
Rest of Tonight
Variable cloudiness with isolated showers and thunderstorms. Low in the mid 70s. Light wind.
Sunday
Hot. Partly cloudy. High in the upper 90s. Highest heat index readings of around 105 in the afternoon. West wind around 10 mph.
Sunday Night
Partly cloudy. A 20 percent chance of showers and thunderstorms after midnight. Low in the upper 70s. Highest heat index readings of around 102 early in the evening. Southwest wind around 10 mph in the evening becoming light after midnight.
Monday
Hot and humid. Partly sunny with a 30 percent chance of thunderstorms. High in the upper 90s. Highest heat index readings of around 106 in the late morning and afternoon. West wind around 10 mph.
Monday Night
Partly cloudy with a 30 percent chance of showers and thunderstorms. Low in the mid 70s. Highest heat index readings of around 101 early in the evening. West wind around 10 mph in the evening becoming light after midnight.
Tuesday
Partly sunny with a 30 percent chance of showers and thunderstorms. High around 90.
Tuesday Night
Partly cloudy with a 30 percent chance of showers and thunderstorms. Low in the lower 70s.
Wednesday
Partly sunny with a 30 percent chance of showers and thunderstorms. High around 90.
Wednesday Night through Saturday
Partly cloudy. Low in the mid 70s. High in the lower 90s.
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