Dayton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a borough in Armstrong County, Pennsylvania.
Tonight
50°F
Mostly Clear
Mostly clear, with a low around 50. Southeast wind around 5 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Clear | 5 mph SE | 2% |
| Wednesday | 76°F | Partly Sunny | 3 to 8 mph SE | 3% |
| Wednesday Night | 59°F | Light Rain | 8 mph S | 98% |
| Thursday | 70°F | Chance Light Rain | 6 to 12 mph SW | 50% |
| Thursday Night | 47°F | Partly Cloudy | 1 to 5 mph SW | 5% |
| Friday | 64°F | Partly Sunny | 1 to 6 mph W | 14% |
| Friday Night | 43°F | Chance Light Rain | 5 mph NW | 27% |
| Saturday | 54°F | Chance Light Rain | 5 to 10 mph W | 33% |
| Saturday Night | 36°F | Chance Light Rain then Mostly Cloudy | 3 to 7 mph W | 30% |
| Sunday | 54°F | Partly Sunny then Slight Chance Light Rain | 3 to 9 mph SW | 18% |
| Sunday Night | 34°F | Slight Chance Light Rain | 6 to 9 mph W | 22% |
| Monday | 54°F | Chance Light Rain | 9 to 14 mph W | 33% |
| Monday Night | 35°F | Chance Light Rain | 6 to 10 mph SW | 33% |
| Tuesday | 58°F | Mostly Sunny | 10 to 15 mph W | 13% |
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 Nov 4, 2026.