| National Weather Service Forecast for:
Johnston IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 5:22 am CST Feb 2, 2026 | ||||||||||||||||||
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| Today |
Partly sunny, with a high near 33. Light north northwest wind. |
| Tonight |
A slight chance of snow between 2am and 4am. Mostly cloudy, with a low around 18. Light east northeast wind. Chance of precipitation is 20%. |
| Tuesday |
Mostly sunny, with a high near 29. North wind 3 to 6 mph. |
| Tuesday Night |
Partly cloudy, with a low around 14. Calm wind. |
| Wednesday |
Partly sunny, with a high near 33. Calm wind becoming north northwest 5 to 8 mph in the afternoon. |
| Wednesday Night |
Mostly cloudy, with a low around 20. |
| Thursday |
Mostly sunny, with a high near 46. |
| Thursday Night |
Mostly clear, with a low around 33. |
| Friday |
Mostly sunny, with a high near 41. |
| Friday Night |
Mostly clear, with a low around 17. |
| Saturday |
Mostly sunny, with a high near 36. |
| Saturday Night |
Partly cloudy, with a low around 22. |
| Sunday |
Mostly sunny, with a high near 42. |
Forecast from NOAA-NWS for Johnston IA.
