Annual mean
Annual mean of daily highs
Annual mean of daily lows
Annawan town, Illinois
Official LSAD Designation: Annawan town • Census GEOID: 1701569
• Bureau County / Henry County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Annawan town.
Reference Weather Station: KEWANEE 1 E, IL US (ID: USC00114710)
• Located 10.6 miles from community center
• Elevation: 237.7 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 30.3° | 13.8° | 22.1° | 1.89" |
| February | 34.8° | 17.4° | 26.1° | 2.06" |
| March | 47.7° | 27.4° | 37.5° | 2.62" |
| April | 60.9° | 37.7° | 49.3° | 3.96" |
| May | 72.0° | 50.2° | 61.1° | 5.07" |
| June | 80.9° | 60.2° | 70.5° | 5.00" |
| July | 83.7° | 63.4° | 73.6° | 3.69" |
| August | 82.2° | 60.7° | 71.4° | 3.86" |
| September | 76.5° | 51.9° | 64.2° | 3.68" |
| October | 63.8° | 41.0° | 52.4° | 2.93" |
| November | 48.5° | 29.7° | 39.1° | 2.65" |
| December | 35.8° | 19.7° | 27.8° | 2.17" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station KEWANEE 1 E, IL US (ID: USC00114710) • 10.6 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 | 49.3 | 59.1 | 39.4 |
| 2011 | 49.1 | 58.9 | 39.4 |
| 2012 | 51.9 | 62.9 | 40.9 |
| 2013 | 47.1 | 57.3 | 36.9 |
| 2014 | 45.1 | 55.0 | 35.1 |
| 2015 | 48.9 | 58.9 | 38.9 |
| 2016 | 51.1 | 60.8 | 41.4 |
| 2017 | 50.9 | 61.2 | 40.6 |
| 2018 | 48.9 | 58.9 | 38.9 |
| 2019 | 48.5 | 58.1 | 38.9 |
| 2020 | 50.2 | 60.1 | 40.4 |
| 2021 | 50.6 | 60.4 | 40.7 |
| 2022 | 48.2 | 58.7 | 37.7 |
| 2023 | 51.5 | 62.1 | 40.9 |
| 2024 | Unavailable | 63.2 | Unavailable |
| 2025 | 50.8 | 61.6 | 40.0 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.