As of 16:04 EDT

Bryn Mawr, PA weather in December

89°

Bryn Mawr, Sunday, 9 August, 16:04

Clear. Feels like 95°. High 90°, low 71°.

Pressure29.97 inHg

Wind4 mph SW

Humidity53%

Visibility6.2 mi

Dew point69°

See detailed hourly forecast

In December, Bryn Mawr, PA averages a high of 42.9° and a low of 30°. About 3.9 inches of precipitation fall over the month (10 wet days). The record high is 72.5° (1998) and the record low -5.4° (1963). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	47.3°	34°	30%	69.4° (2006)	14.7° (1967)
2	46.4°	33.1°	30%	61.9° (1970)	11.5° (1967)
3	46.9°	32.9°	25%	65.5° (1998)	14.5° (1976)
4	46°	32.5°	27%	69.8° (1998)	14° (1966)
5	44.6°	32.5°	30%	67.3° (1982)	20.5° (1966)
6	46°	32.5°	37%	69.1° (1998)	19.4° (2002)
7	44.2°	31.6°	22%	72.5° (1998)	8.6° (2002)
8	43.3°	31.5°	27%	63.7° (1978)	18° (2005)
9	43.7°	30.4°	38%	64.9° (1991)	11.7° (1989)
10	44.4°	31.8°	35%	66.2° (1966)	13.1° (1989)
11	44.1°	31.5°	43%	65.8° (2021)	13.8° (1968)
12	43.5°	30.7°	28%	66° (2015)	8.1° (1988)
13	43.5°	30.6°	28%	69.1° (2015)	6.6° (1960)
14	42.6°	30.4°	38%	66.2° (2015)	3.4° (2005)
15	43.5°	30.6°	28%	63.7° (2015)	7° (1960)
16	43.3°	30.4°	37%	62.1° (1971)	14.2° (1989)
17	42.6°	30.2°	32%	62.6° (1984)	11.3° (1989)
18	41.2°	28.8°	20%	64.2° (2006)	8.2° (1960)
19	40.1°	27.1°	23%	60.6° (1990)	4.8° (1973)
20	39.9°	27°	32%	55.9° (2002)	3.4° (1963)
21	41.4°	28.6°	28%	62.1° (2013)	9.3° (1963)
22	41.7°	28.6°	33%	67.5° (2013)	3.7° (1989)
23	43°	28.9°	37%	63° (2015)	-4.7° (1960)
24	42.4°	28.8°	45%	67.8° (2015)	-3.6° (1960)
25	41.2°	27.5°	37%	65.5° (2015)	0.3° (1980)
26	38.8°	27.3°	27%	60.3° (1964)	2.5° (1983)
27	38.8°	27.3°	25%	62.8° (2015)	4.3° (1989)
28	42.3°	28.4°	25%	63.7° (2008)	5.2° (1960)
29	41.9°	29.1°	30%	67.8° (1984)	6.4° (1961)
30	40.3°	28°	27%	58.8° (1990)	1.4° (1961)
31	41.2°	27.7°	40%	63.7° (1992)	-5.4° (1963)