Annual mean
Annual mean of daily highs
Annual mean of daily lows
Newcastle CDP, Maine
Official LSAD Designation: Newcastle CDP • Census GEOID: 2348610
• Lincoln County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Newcastle CDP.
Reference Weather Station: NEWCASTLE, ME US (ID: USC00175675)
• Located 0.4 miles from community center
• Elevation: 64.9 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 30.1° | 14.7° | 22.4° | 3.83" |
| February | 33.0° | 16.9° | 25.0° | 3.61" |
| March | 41.0° | 24.8° | 32.9° | 4.32" |
| April | 53.5° | 34.8° | 44.2° | 4.17" |
| May | 64.9° | 44.6° | 54.8° | 3.80" |
| June | 73.0° | 53.7° | 63.3° | 4.28" |
| July | 78.3° | 59.8° | 69.1° | 3.42" |
| August | 77.1° | 59.1° | 68.1° | 3.35" |
| September | 69.0° | 52.2° | 60.6° | 4.19" |
| October | 57.0° | 41.8° | 49.4° | 4.97" |
| November | 45.8° | 32.1° | 39.0° | 4.57" |
| December | 35.5° | 21.9° | 28.7° | 4.74" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station NEWCASTLE, ME US (ID: USC00175675) • 0.4 miles from community center .
This is the same reference station used for monthly normals.
Source: NOAA NCEI Global Summary of the Year.
Annual temperature data table (°F)
| Year | Annual mean (°F) | Annual mean of daily highs (°F) | Annual mean of daily lows (°F) |
|---|---|---|---|
| 2010 | 48.2 | 56.4 | 40.0 |
| 2011 | 46.7 | 54.8 | 38.7 |
| 2012 | 47.9 | 55.9 | 39.8 |
| 2013 | 46.1 | 54.1 | 38.1 |
| 2014 | 45.4 | 53.7 | 37.2 |
| 2015 | 45.5 | 54.1 | 36.9 |
| 2016 | 47.5 | 56.0 | 39.0 |
| 2017 | 46.8 | 54.9 | 38.7 |
| 2018 | 46.5 | 54.8 | 38.2 |
| 2019 | 45.5 | 53.6 | 37.5 |
| 2020 | 47.9 | 56.1 | 39.8 |
| 2021 | 48.5 | 56.8 | 40.1 |
| 2022 | 48.0 | 57.0 | 39.1 |
| 2023 | 48.4 | 56.2 | 40.6 |
| 2024 | 48.6 | 56.6 | 40.5 |
| 2025 | Unavailable | Unavailable | Unavailable |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.