| NWS Forecast for: Armstrong County Issued by: National Weather Service Pittsburgh, PA Last Update: 802 AM EDT Wed Sep 23 2026 |  |
| Today: Partly sunny this morning, then becoming partly cloudy. Highs in the mid 60s. East winds 10 to 15 mph with gusts up to 25 mph. Tonight: Partly cloudy. Lows in the mid 40s. East winds 5 to 10 mph. Thursday: Partly cloudy. Highs in the mid 60s. East winds 5 to 10 mph. Thursday Night: Clear. Lows in the lower 40s. Northeast winds around 5 mph. Friday: Sunny. Highs around 70. North winds 5 to 10 mph. Friday Night: Mainly clear. Lows in the mid 40s. Saturday: Mostly sunny. Highs in the lower 70s. Saturday Night: Mainly clear. Lows in the upper 40s. Sunday: Partly cloudy. Highs in the upper 60s. Sunday Night: Mainly clear. Lows in the upper 40s. Monday: Mostly sunny. Highs in the lower 70s. Monday Night: Mainly clear. Lows in the upper 40s. Tuesday: Mostly sunny. Highs in the mid 70s. | |
| Zone Forecast: Armstrong County | |
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