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Johnston Park Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
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| Mostly Sunny | Partly Cloudy | Sunny | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 90°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 50% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 706 AM EDT Tue Aug 18 2026 
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Johnston Park Forecast Discussion
Issued: 800 AM EDT Tue Aug 18 2026
Key Messages
Updated at 741 AM EDT Tue Aug 18 2026- Regular warm to hot August temperatures to continue, with on and off rain and thunderstorm chances returning Thursday and continuing into the weekend.
Discussion
... Issued at 144 AM EDT Tue Aug 18 2026
We will see some minor relief next two days, with a return to typical summertime temperatures and a drop in the overall PWAT for the atmosphere. PWATs drop down to 1.2" or so, which is just above the 25th percentile for ...