Annual mean
Annual mean of daily highs
Annual mean of daily lows
Sperry CDP, Iowa
Official LSAD Designation: Sperry CDP • Census GEOID: 1974325
• Des Moines County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Sperry CDP.
Reference Weather Station: GLADSTONE DAM 18, IL US (ID: USC00113455)
• Located 9.1 miles from community center
• Elevation: 164.0 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 32.2° | 15.9° | 24.0° | 1.39" |
| February | 36.6° | 19.9° | 28.2° | 1.69" |
| March | 49.0° | 30.3° | 39.7° | 2.35" |
| April | 62.3° | 41.8° | 52.0° | 3.77" |
| May | 72.7° | 53.1° | 62.9° | 5.02" |
| June | 82.1° | 63.1° | 72.6° | 4.66" |
| July | 85.5° | 66.9° | 76.2° | 4.03" |
| August | 83.8° | 64.8° | 74.3° | 3.60" |
| September | 77.5° | 56.3° | 66.9° | 3.62" |
| October | 64.8° | 44.5° | 54.7° | 2.80" |
| November | 49.9° | 32.5° | 41.2° | 2.45" |
| December | 37.4° | 22.1° | 29.8° | 1.81" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station GLADSTONE DAM 18, IL US (ID: USC00113455) • 9.1 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 | 51.8 | 61.2 | 42.4 |
| 2011 | 51.9 | 61.2 | 42.6 |
| 2012 | 54.8 | 65.3 | 44.3 |
| 2013 | 50.2 | 59.7 | 40.7 |
| 2014 | 47.3 | 56.7 | 37.9 |
| 2015 | 50.8 | 60.2 | 41.4 |
| 2016 | 53.8 | 62.6 | 44.9 |
| 2017 | 53.9 | 63.7 | 44.1 |
| 2018 | 51.2 | 60.7 | 41.8 |
| 2019 | 50.9 | 59.7 | 42.2 |
| 2020 | 52.5 | 61.7 | 43.3 |
| 2021 | 53.0 | 62.2 | 43.8 |
| 2022 | 50.6 | 61.2 | 40.1 |
| 2023 | 53.7 | 63.7 | 43.6 |
| 2024 | Unavailable | Unavailable | 43.1 |
| 2025 | Unavailable | Unavailable | 42.7 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.