Atlas, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Atlas, a community in Northumberland County, Pennsylvania.
Tonight
49°F
Partly Cloudy then Patchy Fog
Patchy fog after 2am. Partly cloudy, with a low around 49. Northeast wind around 5 mph.
7-day forecast for Atlas
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Partly Cloudy then Patchy Fog | 5 mph NE | 0% |
| Saturday | 70°F | Patchy Fog then Mostly Sunny | 2 mph E | 2% |
| Saturday Night | 57°F | Mostly Cloudy then Rain Showers Likely | 2 to 7 mph SE | 71% |
| Sunday | 68°F | Rain Showers | 3 to 8 mph S | 99% |
| Sunday Night | 56°F | Showers And Thunderstorms | 2 to 6 mph NW | 99% |
| Monday | 65°F | Chance Rain Showers | 6 mph NE | 30% |
| Monday Night | 52°F | Chance Rain Showers | 3 to 7 mph NE | 45% |
| Tuesday | 59°F | Chance Rain Showers | 7 mph E | 49% |
| Tuesday Night | 48°F | Chance Rain Showers | 5 to 8 mph E | 49% |
| Wednesday | 58°F | Chance Rain Showers | 5 to 8 mph E | 44% |
| Wednesday Night | 48°F | Chance Showers And Thunderstorms | 7 mph E | 42% |
| Thursday | 60°F | Chance Showers And Thunderstorms | 7 mph NE | 38% |
| Thursday Night | 49°F | Chance Showers And Thunderstorms | 3 mph NE | 36% |
| Friday | 65°F | Slight Chance Rain Showers then Partly Sunny | 5 mph N | 24% |
Forecast source: National Weather Service (api.weather.gov) for Atlas (40.797, -76.428). Updated through the day.
Growing snapshot for Atlas
Last spring frost
Apr 27
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
6b
More local growing data for Atlas: nearby ZIP 17851 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Allenwood
Dalmatia
Dewart
Edgewood
Fairview-Ferndale
Klingerstown
Kulpmont
Lewisburg
Linntown
Locust Gap
Marion Heights
Marshallton
McEwensville
Montandon
Mount Carmel
Northumberland
Ranshaw
Riverside
Shamokin
Snydertown
Strong
Sunbury
Tharptown (Uniontown)
Trevorton
Turbotville
Watsontown
Climate data from the nearest NOAA station, Bear Gap, Pa (4 mi from Atlas). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.