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Affton, MO Weather

Today: Partly Sunny, high 76°F, low 60°F. Hourly and 10-day forecast from the National Weather Service. Times are local (CDT).

Affton, MO current weather

71°F

Partly Sunny

Forecast for this hour. No recent report from a nearby station.

H 76° / L 60°

No recent station report. NWS hourly forecast updated 10/30/2026, 8:56 AM PT

Hourly forecast

NWS, updated 10/30/2026, 8:56 AM PT

  1. Now71°
  2. 1 PM72°
  3. 2 PM74°
  4. 3 PM75°
  5. 4 PM76°
  6. 5 PM75°
  7. 6 PM73°
  8. 7 PM69°
  9. 8 PM67°
  10. 9 PM66°
  11. 10 PM65°
  12. 11 PM64°
  13. 12 AM63°Sat
  14. 1 AM63°
  15. 2 AM62°
  16. 3 AM62°
  17. 4 AM61°
  18. 5 AM61°
  19. 6 AM61°
  20. 7 AM60°
  21. 8 AM60°
  22. 9 AM62°
  23. 10 AM65°
  24. 11 AM68°11%
  25. 12 PM70°11%
  26. 1 PM70°11%
  27. 2 PM72°10%
  28. 3 PM72°10%
  29. 4 PM73°
  30. 5 PM73°
  31. 6 PM72°
  32. 7 PM69°
  33. 8 PM67°
  34. 9 PM66°
  35. 10 PM65°10%
  36. 11 PM64°11%
  37. 12 AM63°13%Sun
  38. 1 AM62°16%
  39. 1 AM62°21%
  40. 2 AM61°24%
  41. 3 AM61°31%
  42. 4 AM60°38%
  43. 5 AM60°47%
  44. 6 AM60°68%
  45. 7 AM60°68%
  46. 8 AM61°68%
  47. 9 AM63°68%
  48. 10 AM64°68%

10-day forecast

Tap a day for details

  • Today10/30Low 60°High 76°

    This Afternoon: Partly sunny, with a high near 76. East wind around 6 mph.

    Tonight: Mostly cloudy, with a low around 60. East wind around 5 mph.

    Partly Sunny
  • Sat10/3147% chance of precipitationLow 60°High 73°

    Saturday: A chance of rain showers between 11am and 4pm. Cloudy, with a high near 73. East wind around 6 mph.

    Saturday Night: A chance of rain showers after 10pm. Cloudy, with a low around 60. East wind around 5 mph. Chance of precipitation is 50%.

    Chance Rain Showers
  • Sun11/168% chance of precipitationLow 57°High 67°

    Sunday: Rain showers likely. Mostly cloudy, with a high near 67. Southeast wind 3 to 7 mph. Chance of precipitation is 70%.

    Sunday Night: Cloudy, with a low around 57.

    Rain Showers Likely
  • Mon11/248% chance of precipitationLow 62°High 69°

    Monday: A chance of rain showers. Cloudy, with a high near 69. Chance of precipitation is 30%.

    Monday Night: A chance of rain showers. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.

    Chance Rain Showers
  • Tue11/360% chance of precipitationLow 55°High 73°

    Tuesday: Rain showers likely. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.

    Rain Showers Likely
  • Wed11/437% chance of precipitationLow 50°High 68°

    Wednesday: A chance of rain showers. Partly sunny, with a high near 68. Chance of precipitation is 40%.

    Wednesday Night: A slight chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 20%.

    Chance Rain Showers
  • Thu11/511% chance of precipitationLow 47°High 67°

    Thursday: Mostly sunny, with a high near 67.

    Thursday Night: Mostly cloudy, with a low around 47.

    Mostly Sunny
  • Fri11/6Model blendLow 40°High 64°

    Friday: Partly cloudy. High near 64°. Low that night near 40°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sat11/7Model blendLow 39°High 64°

    Saturday: Partly cloudy. High near 64°. Low that night near 39°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sun11/8Model blend18% chance of precipitationLow 40°High 64°

    Sunday: Mostly cloudy, slight chance of rain. High near 64°. Low that night near 40°. About 0.17 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 38.546, -90.325 from the NWS LSX office, updated 10/30/2026, 8:56 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KCPS (St Louis/Downtown Arpt, 9 mi), model run 10/30/2026, 9:00 AM CDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now71°Partly Sunny9%6 mph
  2. 1 PM72°Partly Sunny6%6 mph
  3. 2 PM74°Partly Sunny4%6 mph
  4. 3 PM75°Partly Sunny3%6 mph
  5. 4 PM76°Partly Sunny2%6 mph
  6. 5 PM75°Partly Sunny1%6 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the high temperature today in Affton, MO?
The National Weather Service forecast for this afternoon calls for a high near 76°F. Partly Sunny.
Will it rain in Affton, MO in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Affton, MO?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 6 to Nov 8) come from the NOAA National Blend of Models, with highs near 64°F. Model guidance this far out often changes.
What time is sunrise and sunset in Affton, MO today?
Sunrise is about 7:26 AM CDT and sunset is about 6:03 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Affton, MO?
At St Louis Sci Ctr, the 1991 to 2020 normal high in October is 70°F and the normal low is 50°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.13 in
Snow
0.00 in
Ice
0.00 in

Nearby hazards

Missouri hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast today (St. Louis (Metro-east))
GoodPM2.5
AQI forecast tomorrow (St. Louis (Metro-east))
ModeratePM2.5

UV index guide · Air quality

Drought

By county

St. Louis County, week of 10/27/2026

100% of the county is abnormally dry. No drought.

Sun and moon

Local time, center of the area

Sunrise
7:26 AM
Sunset
6:03 PM
Daylight
10 hr 38 min
Moon
Waning Gibbous 78% lit
First light (civil dawn)
6:58 AM
Last light (civil dusk)
6:31 PM
Moonrise
9:48 PM
Moonset
12:37 PM

Normal October weather

Climate

Normal October high 70°, low 50°, precipitation 3.20 in for the month. 1991 to 2020 normals at St Louis Sci Ctr, 7 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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