Millbourne, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millbourne, a borough in Philadelphia County, Pennsylvania.
This Afternoon
71°F
Mostly Sunny
Mostly sunny, with a high near 71. Southwest wind around 5 mph.
7-day forecast for Millbourne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Mostly Sunny | 5 mph SW | 2% |
| Tonight | 50°F | Partly Cloudy | 5 mph S | 3% |
| Wednesday | 75°F | Patchy Fog then Mostly Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 58°F | Mostly Cloudy | 5 mph S | 2% |
| Thursday | 74°F | Chance Light Rain | 5 to 10 mph S | 37% |
| Thursday Night | 61°F | Chance Light Rain then Chance T-storms | 5 mph S | 72% |
| Friday | 71°F | Light Rain | 5 mph SW | 78% |
| Friday Night | 54°F | Light Rain | 5 mph W | 78% |
| Saturday | 67°F | Chance Light Rain | 5 mph NW | 30% |
| Saturday Night | 46°F | Slight Chance Light Rain then Partly Cloudy | 5 mph NW | 16% |
| Sunday | 63°F | Mostly Sunny | 5 mph NW | 10% |
| Sunday Night | 44°F | Partly Cloudy then Slight Chance Light Rain | 0 to 5 mph W | 23% |
| Monday | 59°F | Chance Light Rain | 5 to 10 mph NW | 33% |
| Monday Night | 42°F | Chance Light Rain | 5 to 10 mph W | 33% |
Forecast source: National Weather Service (api.weather.gov) for Millbourne (39.964, -75.253). Updated through the day.
Growing snapshot for Millbourne
Last spring frost
Mar 30
First fall frost
Nov 17
Growing season
232 days
Hardiness zone
7b
More local growing data for Millbourne: nearby ZIP 19151 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Phila Franklin Inst, Pa (4.7 mi from Millbourne). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.