Saint Mary, IL 20 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)

Saturday Dec 20 2025	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	32°	34°	36°	39°	43°	42°	36°	31°
wind	13mph	14mph	12mph	12mph	11mph	11mph	8mph	9mph
pressure in	29.24	29.16	29.12	29.14	29.18	29.28	29.42	29.55

Friday Dec 20 2024	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	28°	28°	27°	27°	29°	29°	27°	26°
wind	20mph	21mph	23mph	22mph	20mph	15mph	8mph	6mph
pressure in	29.49	29.51	29.61	29.71	29.76	29.78	29.83	29.86

Wednesday Dec 20 2023	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	30°	28°	28°	33°	45°	49°	41°	39°
wind	8mph	7mph	7mph	7mph	7mph	6mph	5mph	5mph
pressure in	29.62	29.60	29.62	29.67	29.66	29.63	29.66	29.68

* Saint Mary, IL weather for December 20 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 20, 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 20 for previous years is presented.