Weather World
Borough of Carnegie, PACarnegie, PA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Carnegie Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  | | |  | | | | | | |  |
| Sunny | Clear | Mostly Sunny | Clear | Clearing | Clear | Sunny | Clear | Sunny | Clear | Mostly Sunny | Partly Cloudy |
| Hi: 61°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 202 PM EDT Wed Oct 21 2026 
Carnegie Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Carnegie Weather Map
Carnegie Quick Facts
Carnegie Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 124 PM EDT Wed Oct 21 2026
Key Messages
1) Frost Advisory in effect Thursday morning for portions of the region. Otherwise, the stretch for dry weather continues.
Discussion
... KEY MESSAGE 1... Over the next 24 hours, strengthening northerly flow will promote lower dew points early Thursday morning. Combined with radiational cooling and sufficient dry air, temperatures are expected to fall into the low to mid-30s, increasing the potential for frost. A Frost Advisory has been issued for counties that have not yet experienced...