Lykens, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lykens, a borough in Dauphin County, Pennsylvania.
Tonight
49°F
Mostly Clear
Mostly clear, with a low around 49. South wind 1 to 5 mph.
7-day forecast for Lykens
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear | 1 to 5 mph S | 0% |
| Wednesday | 74°F | Mostly Sunny | 2 to 8 mph S | 0% |
| Wednesday Night | 58°F | Mostly Cloudy then Rain Showers Likely | 7 mph S | 74% |
| Thursday | 72°F | Rain Showers | 3 to 7 mph S | 87% |
| Thursday Night | 56°F | Chance Rain Showers | 0 to 3 mph SW | 48% |
| Friday | 69°F | Chance Rain Showers | 2 mph NW | 48% |
| Friday Night | 46°F | Chance Rain Showers | 3 mph NW | 47% |
| Saturday | 62°F | Slight Chance Rain Showers | 5 to 8 mph NW | 16% |
| Saturday Night | 38°F | Partly Cloudy | 8 mph NW | 13% |
| Sunday | 60°F | Mostly Sunny | 7 mph W | 9% |
| Sunday Night | 36°F | Slight Chance Rain Showers | 8 mph W | 19% |
| Monday | 59°F | Slight Chance Rain Showers | 7 to 10 mph NW | 24% |
| Monday Night | 36°F | Slight Chance Rain Showers | 8 mph W | 21% |
| Tuesday | 62°F | Mostly Sunny | 7 to 10 mph W | 12% |
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
Nearby towns & communities
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Millersburg
New Cumberland
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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 Nov 4, 2026.