Last updated: June 24, 2025
The average temperature in Hammond, United States during December is a chilly -5°C (23°F). Temperatures can vary significantly, dipping as low as -28°C (-18°F) and occasionally reaching a maximum of 14°C (58°F). During this time, precipitation is about 57 mm (2.2 in), falling over 8 days, and the average humidity sits at a high 84%. Be sure to bundle up if you're visiting!
In December in Hammond, the average temperature is -5°C (23°F). Maximum temperatures can reach 14°C (58°F), while minimums can drop as low as -28°C (-18°F). Be prepared for a significant temperature range when traveling to Hammond during this time.
In Hammond in December, the precipitation amount is 57 mm (2.2 in) over the course of 8 days.
In Hammond in December, humidity is 84%. With an average temperature of -5°C (23°F), this humidity feels like an icy blanket wrapping around you, making the cold air bite even deeper and turning travel into a brisk, challenging adventure where each breath comes with a frosty reminder of the chill.
In Hammond in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Hammond, you can visit Hourly UV Index in Hammond.
UV Risk Categories
Weather in Hammond varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hammond, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 30 mm (1.2 inches) | 87% | low |
| February Weather | -9°C (17°F) | 40 mm (1.6 inches) | 90% | moderate |
| March Weather | 0°C (33°F) | 57 mm (2.2 inches) | 85% | moderate |
| April Weather | 6°C (43°F) | 87 mm (3.4 inches) | 84% | high |
| May Weather | 15°C (59°F) | 137 mm (5.4 inches) | 78% | very high |
| June Weather | 21°C (70°F) | 114 mm (4.5 inches) | 80% | very high |
| July Weather | 23°C (73°F) | 106 mm (4.2 inches) | 81% | very high |
| August Weather | 21°C (70°F) | 124 mm (4.9 inches) | 81% | very high |
| September Weather | 17°C (63°F) | 108 mm (4.2 inches) | 81% | high |
| October Weather | 9°C (48°F) | 101 mm (4.0 inches) | 84% | moderate |
| November Weather | 0°C (33°F) | 40 mm (1.6 inches) | 88% | moderate |
| December Weather | -5°C (23°F) | 57 mm (2.2 inches) | 84% | low |