Dayton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a borough in Armstrong County, Pennsylvania.
Today
83°F
Patchy Fog then Sunny
Patchy fog between 9am and 10am. Sunny, with a high near 83. Southeast wind around 2 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Fog then Sunny | 2 mph SE | 0% |
| Tonight | 63°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 84°F | Partly Sunny then Scattered Showers And Thunderstorms | 5 mph SE | 41% |
| Wednesday Night | 66°F | Scattered Showers And Thunderstorms | 5 mph SE | 49% |
| Thursday | 83°F | Showers And Thunderstorms | 2 to 6 mph S | 79% |
| Thursday Night | 66°F | Showers And Thunderstorms | 1 to 5 mph SW | 79% |
| Friday | 82°F | Showers And Thunderstorms | 2 to 6 mph SW | 84% |
| Friday Night | 65°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 5 mph SW | 84% |
| Saturday | 81°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 7 mph SW | 51% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 51% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 27% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 27% |
| Monday | 84°F | Chance Showers And Thunderstorms | 6 to 10 mph SW | 46% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 51% |
Forecast source: National Weather Service (api.weather.gov) for Dayton (40.881, -79.241). Updated through the day.
Growing snapshot for Dayton
Last spring frost
May 10
First fall frost
Oct 12
Growing season
155 days
Hardiness zone
6a
More local growing data for Dayton: nearby ZIP 16222 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Apollo
Applewold
Atwood
Clinton
Distant
East Brady
Elderton
Ford City
Ford Cliff
Freeport
Kittanning
Lenape Heights
Manorville
New Bethlehem
North Apollo
North Vandergrift
Orchard Hills
Rural Valley
Sagamore
Schenley
Shelocta
South Bethlehem
Spring Church
Templeton
West Hills
West Kittanning
Worthington
Yatesboro
Climate data from the nearest NOAA station, Putneyville 2 Se Dam, Pa (3.8 mi from Dayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.