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Saint Louis City
 Details for Saint Louis City Flood Watch  +1 additional alert
USA Weather Finder
Flood Watch FLOOD WATCH - Saint Louis City  - Saint Louis County

Regional Radar Regional Visible Satellite
Radar/Satellite images courtesy of Weather Underground.
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Updated: @ 18-May-2026 10:35pm - next update at 10:40pm  
Summary / Temperature Wind Rain Outlook
mostly clear mostly clear
Currently: 65.3, Max: 78.4, Min: 64.6 65.3°F
 

Comfortable

Feels like: 65.3°F

24-hr difference
-13.9°FColder 13.9°F than yesterday at this time.
  Today Yesterday
High: 78.4°F
9:08am 		91.2°F
5:59pm
Low: 64.6°F
6:46pm 		64.9°F
5:51am
Wind from W W
0.3
Gust:
 0 mph
0 Bft - Calm
Today: 19.6 mph 7:00pm
Gust Month: 53.8 mph May 9
Rain Today: 1.21 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 1.66 in
Season Total: 11.39 in
6 rain days in May.
Tuesday

Tuesday: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And T-Storms then Showers And T-Storms Likely
Humidity & Barometer Almanac Moon
Humidity: 92 % Decreased 2.0% since last hour.
Dew Point: 62.9°F Decreased 0.6°F since last hour.
Barometer: 29.982 inHg Rising 0.04 inHg/hr
Baro Trend: Rising
Sunrise: 5:46am
Sunset: 8:08pm
Moonrise: 8:05am
Moonset: 10:53pm
Waxing Crescent
Waxing Crescent, Moon at 2 days in cycle
8%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 0.0 @ 6:03am
0 W/m2 (0 %)
High: 16 @  6:28am
 NWS Weather Forecast  - Outlook: Tonight & Tuesday
Tonight

Tonight: Mostly Cloudy then Chance Showers And Thunderstorms
Mostly Cloudy then Chance Showers And T-Storms

Lo 66 °F		 NWS forecast: A slight chance of rain showers between 3am and 4am, then a chance of showers and thunderstorms. Mostly cloudy. Low around 66, with temperatures rising to around 71 overnight. South wind 7 to 12 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
 
Tuesday

Tuesday: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And T-Storms then Showers And T-Storms Likely

Hi 82 °F		 NWS forecast: A chance of showers and thunderstorms before 10am, then showers and thunderstorms likely. Mostly cloudy. High near 82, with temperatures falling to around 76 in the afternoon. Southwest wind 8 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.