NWS Forecast for Arnold MO

National Weather Service Forecast for: Arnold MO
Issued by: National Weather Service Saint Louis, MO

Updated: 9:22 am CST Dec 23, 2024

Today Cloudy then Slight Chance Rain	Tonight Slight Chance Rain and Patchy Fog	Tuesday Chance Rain and Patchy Fog then Rain	Tuesday Night Rain and Patchy Fog	Christmas Day Chance Rain	Wednesday Night Cloudy	Thursday Cloudy	Thursday Night Chance Rain	Friday Rain Likely
Hi 49 °F	Lo 40 °F	Hi 46 °F	Lo 40 °F	Hi 47 °F	Lo 42 °F	Hi 54 °F	Lo 48 °F	Hi 59 °F

Today	Scattered sprinkles between 11am and noon, then a slight chance of rain after noon. Cloudy, with a high near 49. Southwest wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight	A slight chance of rain before 10pm, then a slight chance of rain after 4am. Patchy fog after 4am. Otherwise, cloudy, with a low around 40. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday	Rain, mainly after 2pm. Patchy fog before 9am. High near 46. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 80%.
Tuesday Night	Rain. Patchy fog between 7pm and 1am. Low around 40. East wind 3 to 5 mph. Chance of precipitation is 100%.
Christmas Day	A 40 percent chance of rain. Cloudy, with a high near 47. Calm wind becoming southeast around 5 mph.
Wednesday Night	Cloudy, with a low around 42.
Thursday	Cloudy, with a high near 54.
Thursday Night	A 40 percent chance of rain, mainly after midnight. Cloudy, with a low around 48.
Friday	Rain likely, mainly before noon. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
Friday Night	A 50 percent chance of rain. Mostly cloudy, with a low around 48.
Saturday	A 50 percent chance of rain. Mostly cloudy, with a high near 59.
Saturday Night	A 40 percent chance of rain. Mostly cloudy, with a low around 43.
Sunday	A 30 percent chance of rain. Mostly sunny, with a high near 57.

Forecast from NOAA-NWS for Arnold MO.