| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 26°F | 17°F | 0.5" |
| February | 14°F | 29°F | 20°F | 1.2" |
| March | 27°F | 45°F | 34°F | 5.9" |
| April | 38°F | 60°F | 48°F | 2.5" |
| May | 51°F | 73°F | 60°F | 9.7" |
| June | 61°F | 83°F | 71°F | 2.4" |
| July | 63°F | 84°F | 73°F | 1.2" |
| August | 60°F | 81°F | 69°F | 5.9" |
| September | 54°F | 79°F | 64°F | 2.5" |
| October | 43°F | 64°F | 52°F | 4.8" |
| November | 28°F | 48°F | 36°F | 2.8" |
| December | 10°F | 25°F | 17°F | 0.5" |
| Index | Rake | Iowa | National |
| Air quality index | 15 | 39 | 42 |
| Pollution index | 10,070,000 | 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 | 0.020% |
| Benzene | 0.120% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.150% |
| Mercury | 0.270% |
| City | Population | Air Quality Index | National Avg. |
| Lakota, IA | 400 | 15 | 70.0% |
| Blue Earth, MN | 3,128 | 15 | 70.0% |
| Kiester, MN | 552 | 15 | 70.0% |
| Ledyard, IA | 83 | 15 | 70.0% |
| Elmore, MN | 385 | 15 | 70.0% |
| Rake, IA | 153 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Powhatan, AR | 153 | 45 | 10.0% |
| Hard Rock, AZ | 153 | 45 | 10.0% |
| Amador City, CA | 153 | 52 | 4.0% |
| Pine Flat, CA | 153 | 67 | 34.0% |
| Morriston, FL | 153 | 38 | 24.0% |
| Rake, IA | 153 | 15 | 70.0% |
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