Armstrong County, PA Weather Forecast
County weather hub
Sunny
Compare major city weather across Armstrong County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 91. South wind 1 to 9 mph.
County Weather Overview
This county weather page brings together forecast coverage for Armstrong County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 10 of 10 mapped cities in Armstrong County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 18 to May 23, 2026
- Latest sync
- May 16, 2026 10:37 PM EDT
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Armstrong County
Monday looks like the warmest upcoming period in Armstrong County at 91 degrees F.
Thursday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 12 mph SW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- May 16, 2026 10:37 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- PBZ
- Radar station
- KPBZ
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 66. South wind 3 to 7 mph.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
A chance of rain showers before 8am, then showers and thunderstorms. Mostly cloudy, with a high near 82. Chance of precipitation is 90%.
Showers and thunderstorms before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 80%.
Partly sunny, with a high near 68.
A slight chance of rain showers after 2am. Mostly cloudy, with a low around 48.
A chance of rain showers. Partly sunny, with a high near 70. Chance of precipitation is 30%.
A chance of rain showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
A chance of rain showers. Mostly cloudy, with a high near 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
May 18
|
Sunny
|
91°F |
1 to 9 mph
S
|
|
Monday Night
May 18
|
Partly Cloudy
|
66°F |
3 to 7 mph
S
|
|
Tuesday
May 19
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
89°F |
5 to 12 mph
SW
|
|
Tuesday Night
May 19
|
Chance Showers And Thunderstorms
|
69°F |
5 to 9 mph
SW
|
|
Wednesday
May 20
|
Showers And Thunderstorms
|
82°F |
8 to 12 mph
W
|
|
Wednesday Night
May 20
|
Showers And Thunderstorms
|
51°F |
6 to 10 mph
NW
|
|
Thursday
May 21
|
Partly Sunny
|
68°F |
7 mph
N
|
|
Thursday Night
May 21
|
Mostly Cloudy then Slight Chance Rain Showers
|
48°F |
7 mph
NE
|
|
Friday
May 22
|
Chance Rain Showers
|
70°F |
9 mph
E
|
|
Friday Night
May 22
|
Chance Rain Showers
|
52°F |
9 mph
E
|
|
Saturday
May 23
|
Chance Rain Showers
|
70°F |
10 mph
SE
|
Major City Forecasts
Live forecast snapshots for major cities across Armstrong County.
Coverage
Forecast coverage currently spans 10 of 10 mapped cities in Armstrong County.
Largest mapped city population in this region: 6,550.
