Middletown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Middletown, a community in Northampton County, Pennsylvania.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. North wind around 0 mph.
7-day forecast for Middletown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 0 mph | 0% |
| Tonight | 63°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 84°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph E | 53% |
| Wednesday Night | 70°F | Showers And Thunderstorms Likely | 0 mph | 59% |
| Thursday | 89°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 72% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 72% |
| Friday | 89°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph SW | 56% |
| Friday Night | 70°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph W | 56% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 44% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 44% |
| Sunday | 88°F | Mostly Sunny | 0 to 5 mph W | 12% |
| Sunday Night | 70°F | Mostly Clear | 0 to 5 mph SW | 12% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 17% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Middletown (40.644, -75.325). Updated through the day.
Growing snapshot for Middletown
Last spring frost
Apr 20
First fall frost
Oct 24
Growing season
184 days
Hardiness zone
7a
More local growing data for Middletown: nearby ZIP 18020 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Allentown Intl Ap, Pa (6.6 mi from Middletown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.