Newtown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newtown, a borough in Bucks County, Pennsylvania.
Tonight
50°F
Partly Cloudy
Partly cloudy, with a low around 50. South wind around 5 mph.
7-day forecast for Newtown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Partly Cloudy | 5 mph S | 3% |
| Wednesday | 75°F | Patchy Fog then Sunny | 0 to 10 mph S | 2% |
| Wednesday Night | 58°F | Mostly Cloudy | 5 mph S | 3% |
| Thursday | 73°F | Chance Light Rain | 5 to 10 mph S | 40% |
| Thursday Night | 61°F | Light Rain | 0 to 5 mph S | 79% |
| Friday | 69°F | Light Rain | 0 to 5 mph W | 79% |
| Friday Night | 51°F | Light Rain | 0 to 5 mph NW | 78% |
| Saturday | 66°F | Chance Light Rain | 5 to 10 mph NW | 40% |
| Saturday Night | 41°F | Slight Chance Light Rain then Partly Cloudy | 5 mph NW | 15% |
| Sunday | 61°F | Mostly Sunny | 5 to 10 mph W | 10% |
| Sunday Night | 39°F | Partly Cloudy then Slight Chance Light Rain | 5 to 10 mph W | 18% |
| Monday | 60°F | Slight Chance Light Rain | 10 to 15 mph NW | 23% |
| Monday Night | 38°F | Slight Chance Light Rain | 5 to 10 mph W | 23% |
| Tuesday | 62°F | Slight Chance Light Rain then Sunny | 10 to 15 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Newtown (40.228, -74.932). Updated through the day.
Growing snapshot for Newtown
Last spring frost
Apr 10
First fall frost
Nov 1
Growing season
202 days
Hardiness zone
7a
More local growing data for Newtown: nearby ZIP 18940 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Blooming Glen
Bristol
Brittany Farms-The Highlands
Chalfont
Churchville
Cornwells Heights
Croydon
Doylestown
Dublin
Eddington
Fairless Hills
Feasterville
Hulmeville
Ivyland
Langhorne
Langhorne Manor
Levittown
Milford Square
New Britain
New Hope
Newtown Grant
Parkland
Penndel
Perkasie
Plumsteadville
Quakertown
Richboro
Richlandtown
Riegelsville
Sellersville
Climate data from the nearest NOAA station, Trenton Mercer Co Ap, Nj (6.5 mi from Newtown). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.