Mertztown, PA 9 December Weather

Altitude - 149m | 40°30′22″N,75°39′54″W | map (OSM)

Mertztown, PA

°F

11 amFair10mphN

Mon, December 1, 202511:30 AM (GMT -05:00)

Tuesday Dec 9 2025	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	19°	19°	18°	24°	30°	32°	31°	28°
wind	2mph	1mph	1mph	3mph	5mph	5mph	3mph	3mph
pressure in	29.65	29.64	29.63	29.60	29.55	29.51	29.49	29.45

Monday Dec 9 2024	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	35°	34°	32°	37°	42°	43°	42°	42°
wind	0mph	0mph	2mph	4mph	4mph	2mph	0mph	1mph
pressure in	29.49	29.49	29.49	29.48	29.41	29.36	29.40	29.44

Saturday Dec 9 2023	12 am	3 am	6 am	9 am	12 pm	3 pm	6 pm	9 pm

temperature °F	35°	34°	36°	38°	43°	49°	44°	41°
wind	1mph	1mph	1mph	2mph	1mph	1mph	1mph	1mph
pressure in	29.65	29.63	29.65	29.66	29.64	29.60	29.60	29.57

* Mertztown, PA weather for December 9 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 Mertztown, PA Weather for December 9, 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 9 for previous years is presented.