Marietta, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marietta, a borough in Lancaster County, Pennsylvania.
Overnight
51°F
Mostly Clear
Mostly clear, with a low around 51. Southeast wind around 3 mph.
7-day forecast for Marietta
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Clear | 3 mph SE | 0% |
| Wednesday | 75°F | Mostly Sunny | 1 to 12 mph S | 0% |
| Wednesday Night | 60°F | Mostly Cloudy then Chance Rain Showers | 9 mph S | 52% |
| Thursday | 74°F | Rain Showers | 7 to 12 mph S | 83% |
| Thursday Night | 59°F | Rain Showers Likely | 2 to 7 mph SW | 73% |
| Friday | 70°F | Rain Showers Likely | 3 mph NW | 66% |
| Friday Night | 48°F | Rain Showers Likely | 1 to 6 mph NW | 55% |
| Saturday | 64°F | Slight Chance Rain Showers | 7 to 12 mph NW | 17% |
| Saturday Night | 40°F | Slight Chance Rain Showers then Partly Cloudy | 7 to 10 mph NW | 17% |
| Sunday | 60°F | Mostly Sunny | 7 to 10 mph W | 8% |
| Sunday Night | 39°F | Slight Chance Rain Showers | 7 to 10 mph W | 22% |
| Monday | 60°F | Slight Chance Rain Showers | 10 to 17 mph W | 22% |
| Monday Night | 38°F | Slight Chance Rain Showers | 7 to 12 mph W | 19% |
| Tuesday | 63°F | Sunny | 9 to 16 mph W | 14% |
Forecast source: National Weather Service (api.weather.gov) for Marietta (40.057, -76.552). Updated through the day.
Growing snapshot for Marietta
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
162 days
Hardiness zone
7a
More local growing data for Marietta: nearby ZIP 17547 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Akron
Bainbridge
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Brickerville
Brownstown
Cambridge
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Clay
Columbia
Conestoga
Denver
East Earl
East Petersburg
Elizabethtown
Ephrata
Falmouth
Farmersville
Fivepointville
Gap
Georgetown
Goodville
Gordonville
Hinkletown
Hopeland
Intercourse
Kirkwood
Lampeter
Climate data from the nearest NOAA station, Landisville 2 Nw, Pa (9 mi from Marietta). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.