Last updated: June 24, 2025
In Big Flats, United States, the average temperature in December hovers around -1°C (31°F). Expect temperatures to dip as low as -21°C (-6°F) and occasionally reach a pleasant 17°C (62°F). During this month, precipitation averages 82 mm (3.2 in) spread over 12 days, contributing to a high average humidity of 86%. Enjoy the chilly yet dynamic climate!
In December in Big Flats, the average temperature is -1°C (31°F), with maximums reaching 17°C (62°F) and minimums dropping as low as -21°C (-6°F). This wide temperature range means travelers should prepare for both chilly days and surprisingly mild afternoons.
In Big Flats in December, the precipitation amount is 82 mm (3.2 in) occurring over a span of 12 days.
In Big Flats in December humidity is 86%. With an average temperature of -1°C (31°F), this humidity feels like an eerie chill enveloping you, making travel uncomfortable as the damp air bites into your skin and the cold seeps through even the warmest of clothes, creating an atmosphere that is heavy and uninviting.
In Big Flats 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 Big Flats, you can visit Hourly UV Index in Big Flats.
UV Risk Categories
Weather in Big Flats varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Big Flats, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 66 mm (2.6 inches) | 90% | moderate |
| February Weather | -2°C (28°F) | 83 mm (3.3 inches) | 90% | moderate |
| March Weather | 1°C (35°F) | 78 mm (3.1 inches) | 87% | high |
| April Weather | 8°C (46°F) | 110 mm (4.3 inches) | 88% | very high |
| May Weather | 14°C (58°F) | 118 mm (4.6 inches) | 82% | very high |
| June Weather | 19°C (67°F) | 95 mm (3.7 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 130 mm (5.1 inches) | 78% | very high |
| August Weather | 21°C (70°F) | 84 mm (3.3 inches) | 76% | very high |
| September Weather | 17°C (63°F) | 84 mm (3.3 inches) | 78% | very high |
| October Weather | 11°C (53°F) | 131 mm (5.2 inches) | 84% | high |
| November Weather | 3°C (38°F) | 77 mm (3.0 inches) | 89% | moderate |
| December Weather | -1°C (31°F) | 82 mm (3.2 inches) | 86% | low |