Glenshaw, PA 21 December Weather

Altitude - 319m | 40°31′59″N,79°58′5″W | map (OSM)

Glenshaw, PA

°F

4 amCloudy9mphSW

Wed, December 17, 20254:30 AM (GMT -05:00)

Climatic norm in Glenshaw, PA Dec 21

25°
31°
38°

minimum
average
maximum

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

temperature °F	41°	39°	36°	35°	37°	35°	30°	25°
wind	10mph	10mph	9mph	10mph	11mph	10mph	7mph	5mph
pressure in	28.73	28.78	28.86	28.95	29.00	29.05	29.13	29.19

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

temperature °F	31°	28°	26°	25°	28°	26°	24°	22°
wind	10mph	10mph	8mph	8mph	11mph	10mph	9mph	7mph
pressure in	28.95	28.98	29.05	29.11	29.12	29.12	29.16	29.20

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

temperature °F	30°	26°	28°	31°	36°	40°	40°	37°
wind	1mph	1mph	1mph	2mph	3mph	3mph	3mph	2mph
pressure in	29.29	29.28	29.30	29.31	29.29	29.26	29.25	29.24

* Glenshaw, PA 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 Glenshaw, PA 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.