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Johnstown, AR Weather Forecast
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Johnstown Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  | |  | | | | | |  |
| Chance of Showers | Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Chance of Showers |
| Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C |
| POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 450 PM CDT Sun Sep 13 2026 
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Issued: 614 PM CDT Sun Sep 13 2026
Key Messages
Updated at 548 PM CDT Sun Sep 13 2026- A few PM showers/storms possible over northern Arkansas today
- Upper ridge to settle back over the region which will provide dangerous heat and little to no rainfall
- Some relief from the heat is possible next weekend
Discussion
... Issued at 300 AM CDT Sun Sep 13 2026
Regional WSR 88D radars depicted a complex of showers and thunderstorms ongoing over SErn KS, SWrn MO, and NErn OK. This complex was associated with a weak upper level disturbance withi...