Johnston State School, PA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Johnston State School Weather Forecast
| THIS AFTERNOON | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
| Mostly Sunny | Clear | Patchy Fog | Partly Cloudy | Clearing | Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Clear | Mostly Sunny | Clear |
| Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1237 PM EDT Thu Sep 24 2026 

Johnston State School Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Johnston State School Weather Map
Johnston State School Quick Facts
Johnston State School Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 204 PM EDT Thu Sep 24 2026
Key Messages
1) Below-normal temperature lingers thru Friday and moderates by the weekend. Frost Advisory issued for tonight into Friday morning.
2) Trends continue away from local precipitation influenced by coastal low pressure. Next best chance for rain will be Tuesday/Wednesday of next week.
Discussion
... KEY MESSAGE 1...
Amid strengthening surface high pressure, dry conditions and below- normal temperatures will be likely thru the weekend. Tonight, will feature the coldest temperature with valu...
Weather World