| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 27°F | 18°F | 2.1" |
| February | 14°F | 32°F | 22°F | 3.7" |
| March | 28°F | 46°F | 35°F | 3.9" |
| April | 38°F | 61°F | 48°F | 4.8" |
| May | 49°F | 72°F | 60°F | 6.4" |
| June | 60°F | 81°F | 70°F | 7.8" |
| July | 63°F | 84°F | 73°F | 7.3" |
| August | 60°F | 81°F | 70°F | 6.7" |
| September | 52°F | 77°F | 63°F | 4.7" |
| October | 40°F | 63°F | 50°F | 7.2" |
| November | 28°F | 48°F | 37°F | 4.5" |
| December | 16°F | 31°F | 23°F | 2.5" |
| Index | Latimer | Iowa | National |
| Air quality index | 15 | 39 | 42 |
| Pollution index | 1,013,960 | 1,154,535 | 2,726,193 |
| Measurement | Total |
| Days measured | 118 |
| Days with good air quality | 118 |
| Days with moderate air quality | 0 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Swaledale, IA | 132 | 15 | 70.0% |
| Sheffield, IA | 1,062 | 15 | 70.0% |
| Rowan, IA | 156 | 15 | 70.0% |
| Popejoy, IA | 106 | 15 | 70.0% |
| Belmond, IA | 2,419 | 15 | 70.0% |
| Latimer, IA | 788 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Madison, KS | 788 | 22 | 56.0% |
| Norborne, MO | 788 | 47 | 6.0% |
| Hamden, OH | 788 | 25 | 50.0% |
| Menno, SD | 788 | 36 | 28.0% |
| Philip, SD | 788 | 44 | 12.0% |
| Latimer, IA | 788 | 15 | 70.0% |
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