Byron, IL 21 December Weather

Altitude - 219m | 42°7′37″N,89°15′22″W | map (OSM)

Byron, IL

°F

11 amRain20mphS

Thu, December 18, 202511:43 AM (GMT -06:00)

Sunday Dec 21 2025	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	21°	17°	14°	16°	23°	24°	21°	23°
wind	16mph	13mph	9mph	8mph	6mph	5mph	3mph	6mph
pressure in	29.34	29.42	29.50	29.60	29.64	29.64	29.66	29.66

Saturday Dec 21 2024	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	15°	11°	8°	9°	17°	17°	10°	8°
wind	5mph	5mph	3mph	3mph	3mph	3mph	2mph	3mph
pressure in	29.65	29.66	29.69	29.72	29.70	29.65	29.64	29.61

Thursday Dec 21 2023	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	30°	31°	34°	36°	40°	40°	39°	39°
wind	5mph	6mph	6mph	6mph	5mph	5mph	5mph	4mph
pressure in	29.56	29.54	29.54	29.55	29.51	29.47	29.47	29.45

* Byron, IL weather for December 21 is prepared on the basis of GFS data and is intended for personal use in the "as is" (as is) format. You can see on this page Byron, IL Weather for December 21, as well as compare air temperature with the climate norm for this date. Perhaps you will be interested - for comparison, the actual weather on December 21 for previous years is presented.