Newcastle, ME Weather & Growing Conditions
This Afternoon
63°F
Isolated Rain Showers
Isolated rain showers. Cloudy. High near 63, with temperatures falling to around 56 in the afternoon. East wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Isolated Rain Showers | 5 mph E | 22% |
| Tonight | 47°F | Scattered Rain Showers | 0 to 5 mph E | 30% |
| Wednesday | 70°F | Partly Sunny | 0 to 5 mph SW | 7% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph SW | 4% |
| Thursday | 68°F | Partly Sunny then Isolated Rain Showers | 5 to 15 mph SW | 15% |
| Thursday Night | 57°F | Mostly Cloudy then Isolated Rain Showers | 5 to 10 mph SW | 16% |
| Friday | 67°F | Light Rain Likely | 0 to 5 mph S | 64% |
| Friday Night | 51°F | Light Rain | 0 to 5 mph E | 86% |
| Saturday | 59°F | Light Rain | 5 to 10 mph NE | 82% |
| Saturday Night | 42°F | Light Rain Likely | 0 to 5 mph NW | 62% |
| Sunday | 58°F | Chance Light Rain | 5 to 10 mph NW | 42% |
| Sunday Night | 35°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 5 mph W | 19% |
| Monday | 55°F | Partly Sunny then Slight Chance Light Rain | 0 to 10 mph NW | 19% |
| Monday Night | 32°F | Slight Chance Light Rain | 5 mph NW | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Newcastle, ME
Last spring frost
Apr 27
First fall frost
Oct 18
Growing season
172 days
Hardiness zone
5b
Explore more for Newcastle, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Newcastle, Me (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.