Annual mean
Annual mean of daily highs
Annual mean of daily lows
Massena city, Iowa
Official LSAD Designation: Massena city • Census GEOID: 1950250
• Cass County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Massena city.
Reference Weather Station: ATLANTIC 1 NE, IA US (ID: USC00130364)
• Located 16.8 miles from community center
• Elevation: 351.1 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 31.2° | 9.9° | 20.6° | 0.86" |
| February | 36.1° | 13.7° | 24.9° | 1.14" |
| March | 50.0° | 24.8° | 37.4° | 1.89" |
| April | 62.7° | 35.9° | 49.3° | 3.81" |
| May | 73.1° | 49.3° | 61.2° | 5.43" |
| June | 82.8° | 59.8° | 71.3° | 5.74" |
| July | 86.1° | 63.5° | 74.8° | 4.40" |
| August | 84.4° | 60.6° | 72.5° | 4.44" |
| September | 78.2° | 50.8° | 64.5° | 3.35" |
| October | 65.0° | 38.1° | 51.5° | 2.93" |
| November | 49.2° | 25.4° | 37.3° | 1.65" |
| December | 36.3° | 15.3° | 25.8° | 1.50" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station ATLANTIC 1 NE, IA US (ID: USC00130364) • 16.8 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 | 47.9 | 59.8 | 36.1 |
| 2011 | 48.6 | 60.7 | 36.5 |
| 2012 | 52.3 | 66.0 | 38.7 |
| 2013 | 46.9 | 58.8 | 35.0 |
| 2014 | Unavailable | Unavailable | Unavailable |
| 2015 | 49.5 | 61.2 | 37.8 |
| 2016 | 51.2 | 62.8 | 39.6 |
| 2017 | 51.1 | 63.0 | 39.2 |
| 2018 | 48.3 | 59.4 | 37.1 |
| 2019 | 47.9 | 59.1 | 36.7 |
| 2020 | 50.0 | 62.5 | 37.5 |
| 2021 | 50.4 | 62.7 | 38.1 |
| 2022 | 48.3 | 61.2 | 35.3 |
| 2023 | 51.2 | 63.6 | 38.7 |
| 2024 | 51.7 | 64.5 | 38.9 |
| 2025 | Unavailable | 62.4 | Unavailable |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.