Annual mean
Annual mean of daily highs
Annual mean of daily lows
Shelby city, Montana
Official LSAD Designation: Shelby city • Census GEOID: 3067450
• Toole County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Shelby city.
Reference Weather Station: SHELBY, MT US (ID: USC00247500)
• Located 0.8 miles from community center
• Elevation: 1,013.5 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 31.4° | 6.1° | 18.8° | 0.46" |
| February | 35.3° | 9.9° | 22.6° | 0.36" |
| March | 43.9° | 18.4° | 31.2° | 0.63" |
| April | 54.2° | 28.4° | 41.3° | 1.34" |
| May | 64.4° | 38.0° | 51.2° | 1.77" |
| June | 72.6° | 46.0° | 59.3° | 2.85" |
| July | 82.2° | 51.5° | 66.8° | 1.14" |
| August | 82.2° | 49.3° | 65.8° | 0.85" |
| September | 70.9° | 40.5° | 55.7° | 1.01" |
| October | 56.2° | 29.0° | 42.6° | 0.74" |
| November | 42.0° | 17.6° | 29.8° | 0.52" |
| December | 33.1° | 9.1° | 21.1° | 0.46" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station SHELBY, MT US (ID: USC00247500) • 0.8 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 | 41.0 | 54.1 | 27.9 |
| 2011 | 41.3 | 54.2 | 28.4 |
| 2012 | 43.5 | 57.0 | 30.1 |
| 2013 | 43.1 | 56.3 | 29.9 |
| 2014 | 41.5 | 54.6 | 28.5 |
| 2015 | 45.1 | 59.1 | 31.1 |
| 2016 | 44.6 | 58.0 | 31.2 |
| 2017 | 43.0 | 56.6 | 29.3 |
| 2018 | 40.9 | 54.5 | 27.3 |
| 2019 | 39.3 | 51.5 | 27.1 |
| 2020 | 43.9 | 55.7 | 32.0 |
| 2021 | 44.1 | 56.6 | 31.6 |
| 2022 | 43.0 | 55.0 | 31.1 |
| 2023 | 45.5 | 57.3 | 33.7 |
| 2024 | 44.4 | 56.2 | 32.6 |
| 2025 | 44.2 | 56.4 | 31.9 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.