Last updated: June 24, 2025
In Anamosa, United States, the average temperature in December hovers around -1°C (30°F). However, temperatures can fluctuate dramatically, with minimums plunging to -22°C (-8°F) and maximums soaring to 22°C (71°F). During this month, expect an average precipitation amount of 46 mm (1.8 in) spread over 5 days, while humidity levels remain high at 84%. Stay prepared for a mix of winter chill and occasional warmth!
In December in Anamosa, the average temperature is -1°C (30°F), with maximums reaching 22°C (71°F) and minimums dropping as low as -22°C (-8°F). Be prepared for a wide range of temperatures if you plan to travel during this month.
In Anamosa in December, the precipitation amount is 46 mm (1.8 in) recorded over a span of 5 days.
In Anamosa in December, humidity is 84%. With an average temperature of -1°C (30°F), this humidity feels like a sharp chill that seeps into your bones, making travel uncomfortable as the wetness in the air intensifies the cold, leaving you yearning for warmth and shelter.
In Anamosa in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Anamosa, you can check the information here.
UV Risk Categories
Weather in Anamosa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Anamosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 48 mm (1.9 inches) | 81% | moderate |
| February Weather | -5°C (23°F) | 59 mm (2.3 inches) | 81% | moderate |
| March Weather | 3°C (38°F) | 73 mm (2.9 inches) | 81% | high |
| April Weather | 9°C (48°F) | 84 mm (3.3 inches) | 82% | very high |
| May Weather | 16°C (62°F) | 143 mm (5.6 inches) | 78% | very high |
| June Weather | 23°C (73°F) | 120 mm (4.7 inches) | 81% | extreme |
| July Weather | 24°C (76°F) | 79 mm (3.1 inches) | 79% | very high |
| August Weather | 22°C (72°F) | 88 mm (3.5 inches) | 77% | very high |
| September Weather | 19°C (67°F) | 130 mm (5.1 inches) | 78% | very high |
| October Weather | 11°C (53°F) | 130 mm (5.1 inches) | 78% | high |
| November Weather | 3°C (38°F) | 49 mm (1.9 inches) | 87% | moderate |
| December Weather | -1°C (30°F) | 46 mm (1.8 inches) | 84% | moderate |