Saint Mary, IL 21 December Weather

Altitude - 166m | 40°20′46″N,90°56′2″W | map (OSM)

Saint Mary, IL

°F

2 pmFair10mphW

Thu, December 18, 20252:49 PM (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	27°	24°	20°	23°	31°	33°	29°	30°
wind	9mph	8mph	6mph	5mph	4mph	5mph	5mph	8mph
pressure in	29.64	29.70	29.77	29.84	29.87	29.84	29.83	29.82

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

temperature °F	24°	22°	20°	23°	28°	31°	25°	22°
wind	6mph	5mph	3mph	2mph	2mph	1mph	3mph	6mph
pressure in	29.85	29.87	29.90	29.92	29.89	29.82	29.81	29.79

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

temperature °F	41°	41°	43°	44°	48°	50°	47°	46°
wind	6mph	5mph	4mph	5mph	6mph	6mph	5mph	6mph
pressure in	29.68	29.68	29.68	29.70	29.68	29.63	29.63	29.62

* Saint Mary, 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 Saint Mary, 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.