Average temperature in January is -1.1 °C
Average daytime temperature is 3.3 °C
Average night temperature is -4.3 °C
Absolute maximum temperature: 14.3 °C
Absolute minimum temperature: -15.8 °C
Number of sunny days: 17
Number of rainy days: 8
Number of snow days: 6
Precipitation sum: 49 mm
* Weather data for Ottumwa United States is based on climate observations for 2023 year
| January (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 7.7 | 6.5 | 12.5 | 4.2 | 0.7 | 1.8 | 0.5 | 3.5 | 10 | 7.4 | 8.5 | 2.5 | 0.4 | 5.1 | 7.7 | 14.3 | 7.5 | 3.5 | 1.4 | -0.4 | 4.9 | 0.4 | 2 | 5.1 | 1.3 | -3.3 | 6.1 | -1.5 | -4.9 | -9.5 | -4.4 |
| Apparent max temperature | 5.5 | 3.2 | 10.1 | -0.8 | -5.1 | -2.1 | -4.1 | -1.2 | 5.3 | 5.1 | 5.2 | -0.8 | -4.8 | -0.8 | 3 | 9.9 | 2 | -2.3 | -1.4 | -5.5 | 1 | -3 | -3.2 | 1.9 | -2 | -9.9 | -0.5 | -7.2 | -10.5 | -15.8 | -9.8 |
| Mean temperature | 2.7 | 2.2 | 7.2 | 0.5 | -0.8 | -1.7 | -4.1 | -2.8 | 0.5 | 2.6 | 3.3 | -0.2 | -4.1 | -3.3 | 2.9 | 9.4 | 3.5 | -0.1 | 1 | -1.3 | -1.9 | -0.9 | -3.1 | -0.4 | -0.1 | -7.2 | -1.7 | -4 | -9.1 | -12.4 | -11.3 |
| Apparent mean temperature | -5.1 | -4.7 | 0.2 | -6.5 | -8.1 | -8.9 | -13 | -10.1 | -8.7 | -4.8 | -5.3 | -8.3 | -13.1 | -11.3 | -5.5 | 2 | -4.5 | -5.8 | -6.6 | -8.4 | -9.3 | -6.3 | -11.1 | -8.6 | -8.3 | -18.1 | -13.7 | -11.3 | -19.1 | -20.6 | -20.1 |
| Minimum temperature | -1.5 | -0.9 | 4.6 | -1.1 | -2.4 | -4.1 | -7.9 | -5.9 | -3.8 | -1 | -1.6 | -2.3 | -6.4 | -7.3 | 0.2 | 7.2 | 0.6 | -2.2 | 0 | -2.3 | -5.5 | -2.3 | -6.2 | -4.9 | -1.8 | -11.2 | -9.1 | -5.6 | -12.8 | -14.4 | -15.8 |
| Apparent min temperature | -0.2 | -1.5 | 3.7 | -5 | -6.6 | -6 | -8.7 | -6.7 | -3.8 | -0.8 | 0.2 | -6 | -10.1 | -8.1 | -2.7 | 4.7 | -1.9 | -4.3 | -3.9 | -7 | -5.5 | -4.7 | -8.1 | -4.1 | -4.3 | -14 | -7.9 | -9.1 | -15.6 | -18.7 | -16.5 |
| January | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.5 | 9.5 | 9.5 | 9.5 | 9.6 | 9.6 | 9.6 | 9.6 | 9.7 | 9.7 | 9.7 | 9.7 | 9.8 | 9.8 | 9.8 | 9.9 | 9.9 | 9.9 | 10 | 10 | 10.1 |
| Sunshine duration (h) | 3.5 | 0.2 | 2.1 | 0 | 0 | 4.1 | 8.3 | 8.4 | 7.9 | 6.9 | 8.3 | 4.3 | 8.5 | 7.9 | 5.1 | 7 | 1.8 | 0.4 | 0 | 4.5 | 5.4 | 1.1 | 6.9 | 6 | 2 | 7.2 | 5.8 | 1 | 7.3 | 8.5 | 9 |
| Precipitation (mm) | 0 | 0.4 | 18.5 | 0.3 | 0.3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.9 | 0 | 7.9 | 6.6 | 0 | 0.6 | 4.3 | 0 | 0 | 3.2 | 0 | 1.1 | 1.2 | 0.7 | 0.2 | 0 |
| Precipitation hours | 0 | 2 | 18 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 5 | 11 | 0 | 3 | 16 | 0 | 0 | 13 | 0 | 6 | 6 | 7 | 2 | 0 |
| Wind speed (m/s) | 12.1 | 19 | 26.5 | 23.7 | 27 | 16.1 | 12.6 | 9.7 | 16.3 | 11.5 | 11.9 | 31.9 | 25.5 | 19.7 | 24.5 | 31.1 | 28.5 | 26.3 | 36.1 | 26.3 | 11.6 | 14.8 | 18.3 | 15.3 | 27.6 | 26.3 | 34.8 | 21.3 | 24.5 | 19.6 | 12 |
In January 2023, the highest daytime temperature in Ottumwa was 14.3°C.
While the minimum temperature at night dropped to -15.8°C.
The average nighttime and daytime temperatures during January in Ottumwa are -4.3°C and 3.3°C respectively.
The precipitation sum in January is about 49 mm.