| NWS Forecast for: Armstrong County Issued by: National Weather Service Pittsburgh, PA Last Update: 833 AM EDT Wed Oct 21 2026 | |
| Today: Areas of frost with patchy fog this morning. Sunny. Highs in the lower 60s. East winds around 5 mph, becoming north this afternoon. Tonight: Clear. Patchy fog and frost after midnight. Lows in the lower 30s. Light and variable winds. Thursday: Areas of frost with patchy fog in the morning. Mostly sunny. Highs in the lower 60s. North winds around 5 mph. Thursday Night: Mainly clear. Lows in the mid 30s. North winds around 5 mph. Friday: Sunny. Highs in the upper 50s. Northeast winds around 5 mph. Friday Night: Clear. Lows in the upper 20s. Saturday: Sunny. Highs in the lower 60s. Saturday Night: Clear. Lows in the lower 30s. Sunday: Sunny. Highs in the mid 60s. Sunday Night: Mainly clear. Lows in the upper 30s. Monday: Mostly sunny. Highs in the mid 60s. Monday Night: Partly cloudy. Lows in the lower 40s. Tuesday: Partly sunny in the morning, then becoming partly cloudy. Highs in the lower 60s. | |
| Zone Forecast: Armstrong County | |
Visit your local NWS office at: https://www.weather.gov/pbz/ |