Emmaus, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Emmaus, a borough in Lehigh County, Pennsylvania.
This Afternoon
73°F
Partly Sunny
Partly sunny, with a high near 73. Southeast wind around 5 mph.
7-day forecast for Emmaus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Partly Sunny | 5 mph SE | 1% |
| Tonight | 58°F | Mostly Cloudy then Rain Showers Likely | 5 mph SE | 65% |
| Sunday | 74°F | Rain Showers | 5 to 10 mph S | 96% |
| Sunday Night | 56°F | Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph NW | 86% |
| Monday | 70°F | Partly Sunny then Slight Chance Rain Showers | 5 to 10 mph NE | 22% |
| Monday Night | 50°F | Chance Rain Showers | 5 to 10 mph NE | 33% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 40% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 36% |
| Wednesday | 63°F | Slight Chance Rain Showers | 15 mph NE | 21% |
| Wednesday Night | 49°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Thursday | 62°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Thursday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 31% |
| Friday | 66°F | Chance Rain Showers | 10 to 15 mph N | 30% |
| Friday Night | 49°F | Chance Rain Showers | 10 to 15 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov) for Emmaus (40.535, -75.498). Updated through the day.
Growing snapshot for Emmaus
Last spring frost
Apr 20
First fall frost
Oct 24
Growing season
184 days
Hardiness zone
7a
More local growing data for Emmaus: nearby ZIP 18049 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Allentown Intl Ap, Pa (9.1 mi from Emmaus). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.