Remsen, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.5 °F (low) to 58 °F (high). Annual precipitation averages 30.5 Inches. Remsen is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.5 °F | 26.9 °F | 0.69 in. |
| February | 12.7 °F | 31.7 °F | 0.81 in. |
| March | 24.2 °F | 44.8 °F | 1.79 in. |
| April | 35.2 °F | 59.2 °F | 3.3 in. |
| May | 48.0 °F | 70.9 °F | 3.99 in. |
| June | 59.1 °F | 81.0 °F | 4.51 in. |
| July | 62.6 °F | 84.0 °F | 3.54 in. |
| August | 60.0 °F | 81.7 °F | 3.66 in. |
| September | 50.7 °F | 75.6 °F | 3.37 in. |
| October | 38.0 °F | 62.3 °F | 2.46 in. |
| November | 24.9 °F | 45.5 °F | 1.32 in. |
| December | 14.3 °F | 31.9 °F | 1.03 in. |
| Annual | 36.5 °F | 58 °F | 30.47 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |