St Louis weather live forecast

Today's maximum temperature in St Louis is expected to be 95°F. Select a day from the live weather forecast for St Louis, Missouri, USA for more weather parameters.

5-day weather forecast updated at 04:01 on Thursday 18th September 2025 GMT

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The 5-day weather forecast for Missouri (St Louis) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

St Louis weather forecast by day

Below are the detailed weather forecasts for St Louis for the next 5 days.

St Louis weather for Thursday 18th September 2025

Expect scattered clouds in St Louis, Missouri with a maximum temperature of 95°F, high levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 2 mph from the east.

  • 95°F maximum temperature95
    °F maximum temperature
  • 68°F minimum temperature68
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Little or no wind of 2 mph from the East2
    mph wind from E

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St Louis weather for Friday 19th September 2025

Expect isolated thunderstorms in St Louis, Missouri with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 43% chance of some rain and little or no wind of 2 mph from the south-west.

  • 84°F maximum temperature84
    °F maximum temperature
  • 72°F minimum temperature72
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 43% chance of some rain43
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Little or no wind of 2 mph from the South-West2
    mph wind from SW

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St Louis weather for Saturday 20th September 2025

Expect isolated thunderstorms in St Louis, Missouri with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 33% chance of some rain and little or no wind of 2 mph from the south.

  • 88°F maximum temperature88
    °F maximum temperature
  • 70°F minimum temperature70
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 33% chance of some rain33
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Little or no wind of 2 mph from the South2
    mph wind from S

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St Louis weather for Sunday 21st September 2025

Expect isolated thunderstorms in St Louis, Missouri with a maximum temperature of 84°F, low levels of heat & humidity, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 49% chance of some rain and a light breeze of 5 mph from the south.

  • 84°F maximum temperature84
    °F maximum temperature
  • 72°F minimum temperature72
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 49% chance of some rain49
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 5 mph from the South5
    mph wind from S

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St Louis weather for Monday 22nd September 2025

Expect isolated thunderstorms in St Louis, Missouri with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 63% chance of some rain and a light breeze of 4 mph from the south.

  • 81°F maximum temperature81
    °F maximum temperature
  • 72°F minimum temperature72
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 63% chance of some rain63
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 4 mph from the South4
    mph wind from S

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