Annual mean
Annual mean of daily highs
Annual mean of daily lows
Greycliff CDP, Montana
Official LSAD Designation: Greycliff CDP • Census GEOID: 3033250
• Sweet Grass County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Greycliff CDP.
Reference Weather Station: BIG TIMBER, MT US (ID: USC00240780)
• Located 9.7 miles from community center
• Elevation: 1,249.7 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 38.1° | 19.5° | 28.8° | 0.73" |
| February | 40.0° | 19.6° | 29.8° | 0.65" |
| March | 49.3° | 26.0° | 37.7° | 0.98" |
| April | 56.8° | 32.4° | 44.6° | 2.18" |
| May | 66.6° | 40.3° | 53.4° | 3.06" |
| June | 75.8° | 47.9° | 61.9° | 2.63" |
| July | 86.2° | 53.5° | 69.8° | 1.38" |
| August | 84.9° | 51.3° | 68.1° | 0.99" |
| September | 74.1° | 43.4° | 58.8° | 1.31" |
| October | 59.0° | 34.4° | 46.7° | 1.51" |
| November | 45.9° | 26.0° | 35.9° | 0.78" |
| December | 37.2° | 19.5° | 28.4° | 0.73" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station BIG TIMBER, MT US (ID: USC00240780) • 9.7 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 | 46.1 | 58.2 | 33.9 |
| 2011 | 46.8 | 58.7 | 35.0 |
| 2012 | 49.4 | 62.8 | 36.0 |
| 2013 | 47.4 | 59.6 | 35.3 |
| 2014 | 46.3 | 58.4 | 34.3 |
| 2015 | 49.1 | 61.8 | 36.4 |
| 2016 | 48.9 | 61.4 | 36.5 |
| 2017 | 47.0 | 59.5 | 34.6 |
| 2018 | 45.8 | 57.9 | 33.7 |
| 2019 | 43.9 | 55.6 | 32.1 |
| 2020 | 48.0 | 60.5 | 35.5 |
| 2021 | 48.3 | 61.3 | 35.3 |
| 2022 | 46.7 | 59.4 | 34.1 |
| 2023 | 47.6 | 59.4 | 35.9 |
| 2024 | 48.7 | 61.8 | 35.5 |
| 2025 | 47.8 | 60.4 | 35.2 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.