Annual mean
Annual mean of daily highs
Annual mean of daily lows
Calais city, Maine
Official LSAD Designation: Calais city • Census GEOID: 2309585
• Washington County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Calais city.
Reference Weather Station: ROBBINSTON, ME US (ID: USC00177238)
• Located 6.2 miles from community center
• Elevation: 35.1 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 28.7° | 11.0° | 19.9° | 4.85" |
| February | 31.6° | 12.7° | 22.1° | 4.17" |
| March | 39.7° | 21.8° | 30.8° | 4.82" |
| April | 50.8° | 32.1° | 41.4° | 4.39" |
| May | 62.2° | 41.2° | 51.7° | 4.35" |
| June | 70.9° | 49.9° | 60.4° | 4.10" |
| July | 76.9° | 56.1° | 66.5° | 3.18" |
| August | 76.8° | 55.8° | 66.3° | 3.45" |
| September | 69.1° | 49.0° | 59.0° | 4.23" |
| October | 56.6° | 39.4° | 48.0° | 5.43" |
| November | 45.2° | 30.2° | 37.7° | 5.50" |
| December | 34.4° | 19.4° | 26.9° | 6.27" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station ROBBINSTON, ME US (ID: USC00177238) • 6.2 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 | 46.7 | 55.9 | 37.5 |
| 2011 | 44.7 | 54.2 | 35.2 |
| 2012 | 45.8 | 55.3 | 36.2 |
| 2013 | 43.7 | 53.1 | 34.2 |
| 2014 | 43.5 | 53.2 | 33.8 |
| 2015 | 43.1 | 53.0 | 33.3 |
| 2016 | 45.8 | 55.1 | 36.4 |
| 2017 | 45.1 | 54.5 | 35.7 |
| 2018 | 44.6 | 54.1 | 35.0 |
| 2019 | 43.6 | 53.0 | 34.1 |
| 2020 | 46.1 | 55.7 | 36.5 |
| 2021 | 46.7 | 56.1 | 37.3 |
| 2022 | 46.1 | 55.9 | 36.2 |
| 2023 | 46.1 | 54.9 | 37.3 |
| 2024 | 46.9 | 56.1 | 37.7 |
| 2025 | 44.6 | 54.5 | 34.6 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.