| National Weather Service Forecast for:
Johnston IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 4:36 am CST Dec 22, 2025 | ||||||||||||||||||
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| Today |
Mostly sunny, with a high near 51. South southwest wind 8 to 13 mph, with gusts as high as 22 mph. |
| Tonight |
Mostly cloudy, with a low around 35. South wind 5 to 7 mph becoming northwest after midnight. |
| Tuesday |
Mostly sunny, with a high near 46. Northwest wind around 6 mph becoming northeast in the afternoon. |
| Tuesday Night |
Mostly cloudy, with a low around 32. Northeast wind around 5 mph becoming light and variable. |
| Wednesday |
Mostly cloudy, with a high near 50. Southeast wind 3 to 6 mph. |
| Wednesday Night |
Mostly cloudy, with a low around 40. |
| Christmas Day |
Mostly cloudy, with a high near 61. |
| Thursday Night |
Partly cloudy, with a low around 36. |
| Friday |
Mostly sunny, with a high near 49. |
| Friday Night |
Mostly cloudy, with a low around 34. |
| Saturday |
Mostly sunny, with a high near 49. |
| Saturday Night |
Mostly cloudy, with a low around 23. |
| Sunday |
Mostly sunny, with a high near 35. |
Forecast from NOAA-NWS for Johnston IA.
