Annual mean
Annual mean of daily highs
Annual mean of daily lows
Iroquois city, South Dakota
Official LSAD Designation: Iroquois city • Census GEOID: 4632020
• Beadle County / Kingsbury County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Iroquois city.
Reference Weather Station: DE SMET, SD US (ID: USC00392302)
• Located 14.8 miles from community center
• Elevation: 519.7 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 23.2° | 4.9° | 14.1° | 0.60" |
| February | 28.5° | 9.2° | 18.9° | 0.88" |
| March | 40.6° | 20.9° | 30.7° | 1.36" |
| April | 55.0° | 33.2° | 44.1° | 2.30" |
| May | 67.1° | 45.4° | 56.3° | 3.32" |
| June | 76.9° | 56.1° | 66.5° | 4.06" |
| July | 81.5° | 61.0° | 71.2° | 3.88" |
| August | 79.1° | 58.9° | 69.0° | 3.07" |
| September | 71.6° | 50.1° | 60.9° | 2.78" |
| October | 56.9° | 35.9° | 46.4° | 1.98" |
| November | 40.7° | 22.0° | 31.4° | 0.96" |
| December | 27.7° | 10.3° | 19.0° | 0.74" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station DE SMET, SD US (ID: USC00392302) • 14.8 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 | 45.9 | 54.7 | 37.0 |
| 2011 | 45.8 | 54.9 | 36.6 |
| 2012 | 50.3 | 60.5 | 39.9 |
| 2013 | 44.7 | 53.7 | 35.7 |
| 2014 | 44.4 | 53.8 | 35.1 |
| 2015 | 48.8 | 58.5 | 39.2 |
| 2016 | 48.1 | 58.0 | 38.2 |
| 2017 | 45.8 | 56.4 | 35.2 |
| 2018 | 43.5 | 53.3 | 33.7 |
| 2019 | 42.0 | 51.4 | 32.7 |
| 2020 | 45.5 | 56.0 | 35.0 |
| 2021 | 47.2 | 57.8 | 36.6 |
| 2022 | 44.1 | 55.5 | 32.6 |
| 2023 | 46.0 | 56.9 | 35.0 |
| 2024 | 47.4 | 57.7 | 37.2 |
| 2025 | 46.9 | 58.1 | 35.7 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.