Johnstown, NY Weather Forecast
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Johnstown Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Mostly Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Rain | Rain | Mostly Sunny | Chance of Showers | Chance of Showers | Mostly Cloudy | Mostly Sunny | Chance of Showers |
| Hi: 71°FHi: 22°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Hi: 59°FHi: 15°C Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C Lo: 45°FLo: 7°C | Lo: 41°FLo: 5°C | Hi: 60°FHi: 16°C | Hi: 61°FHi: 16°C Lo: 45°FLo: 7°C |
| POP: 40% | POP: 90% | POP: 90% | POP: 30% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 830 AM EDT Fri Sep 18 2026 

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Issued: 624 AM EDT Fri Sep 18 2026
Key Messages
1) Dry and cool weather returns today into tomorrow.
2) An area of low pressure will bring widespread rain to the region Sunday, followed by drier but cool weather for the first half of next week.
Discussion
... KEY MESSAGE 1...As of 2:50 AM EDT...Current sfc analysis shows the weak sfc low that brought showers yesterday departing well to our east. A trailing cold front is draped across the Mid Hudson Valley, with a second, stronger front approaching NY and the eastern Great Lakes from ...
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