| National Weather Service Forecast for:
Johnston IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 8:02 pm CST Dec 22, 2025 | ||||||||||||||||||
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| Tonight |
Partly cloudy, with a low around 35. Light and variable wind becoming west southwest around 6 mph in the evening. |
| Tuesday |
Mostly sunny, with a high near 45. Northwest wind around 6 mph becoming northeast in the afternoon. |
| Tuesday Night |
Mostly cloudy, with a low around 31. Light and variable wind becoming east southeast around 6 mph after midnight. |
| Wednesday |
Mostly cloudy, with a high near 48. East southeast wind around 6 mph becoming calm in the afternoon. |
| Wednesday Night |
Mostly cloudy, with a low around 36. Calm wind. |
| Christmas Day |
Mostly cloudy, with a high near 52. |
| Thursday Night |
Mostly cloudy, with a low around 40. |
| Friday |
Mostly sunny, with a high near 50. |
| Friday Night |
Mostly cloudy, with a low around 37. |
| Saturday |
Partly sunny, with a high near 53. |
| Saturday Night |
Mostly cloudy, with a low around 21. |
| Sunday |
Sunny, with a high near 30. |
| Sunday Night |
Mostly clear, with a low around 17. |
| Monday |
Sunny, with a high near 32. |
Forecast from NOAA-NWS for Johnston IA.
