Lykens, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lykens, a borough in Dauphin County, Pennsylvania.
This Afternoon
79°F
Mostly Sunny
Mostly sunny, with a high near 79. North wind around 6 mph.
7-day forecast for Lykens
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Mostly Sunny | 6 mph N | 0% |
| Tonight | 49°F | Mostly Clear | 6 mph NE | 0% |
| Saturday | 74°F | Mostly Sunny | 3 mph E | 3% |
| Saturday Night | 58°F | Mostly Cloudy then Rain Showers Likely | 3 to 9 mph SE | 56% |
| Sunday | 73°F | Rain Showers | 5 to 9 mph S | 97% |
| Sunday Night | 56°F | Showers And Thunderstorms | 3 to 8 mph NW | 97% |
| Monday | 69°F | Chance Rain Showers | 5 to 8 mph NE | 32% |
| Monday Night | 51°F | Chance Rain Showers | 5 to 10 mph NE | 48% |
| Tuesday | 62°F | Rain Showers Likely | 7 to 10 mph E | 55% |
| Tuesday Night | 48°F | Rain Showers Likely | 8 to 13 mph E | 55% |
| Wednesday | 60°F | Chance Rain Showers | 7 to 12 mph NE | 47% |
| Wednesday Night | 48°F | Chance Showers And Thunderstorms | 9 mph NE | 46% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 40% |
| Thursday Night | 49°F | Chance Showers And Thunderstorms | 6 mph N | 37% |
Forecast source: National Weather Service (api.weather.gov) for Lykens (40.564, -76.698). Updated through the day.
Growing snapshot for Lykens
Last spring frost
May 1
First fall frost
Oct 16
Growing season
168 days
Hardiness zone
6b
More local growing data for Lykens: nearby ZIP 17048 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Dehart Dam, Pa (8.9 mi from Lykens). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.