Climate Monongahela - Pennsylvania

	JanJa	FebFe	MarMa	AprAp	MayMa	JunJu
Average high in ºF Av. high Hi	38	42	51	64	73	81
Average low in ºF Av. low Lo	22	23	30	39	49	59
Av. precipitation in inch Av. precip. Pre.	2.59	2.27	3.16	3.19	4.11	3.83
Av. snowfall in inch Snowfall Sn	6	5	4	0	0	0

	JulJu	AugAu	SepSe	OctOc	NovNo	DecDe
Average high in ºF Av. high Hi	84	83	77	66	54	42
Average low in ºF Av. low Lo	63	62	55	43	34	26
Av. precipitation in inch Av. precip. Pre.	3.75	3.35	2.93	2.56	3.16	2.70
Av. snowfall in inch Snowfall Sn	0	0	0	0	1	3

Monongahela Climate Graph - Pennsylvania Climate Chart

Day	High ºF	Low ºF	Prec/mo inch	Prec/yr inch	Snow/mo inch	Snow/yr inch
1 Jan	38.3	22.5	0.08	0.08	0.20	0.50
2 Jan	38.2	22.4	0.16	0.16	0.31	0.80
3 Jan	38.1	22.2	0.28	0.28	0.51	1.30
4 Jan	38.0	22.1	0.35	0.35	0.59	1.50
5 Jan	37.9	22.0	0.43	0.43	0.79	2.00
6 Jan	37.8	22.0	0.51	0.51	0.98	2.50
7 Jan	37.8	21.9	0.59	0.59	1.10	2.80
8 Jan	37.7	21.8	0.71	0.71	1.30	3.30
9 Jan	37.7	21.7	0.79	0.79	1.50	3.80
10 Jan	37.6	21.6	0.87	0.87	1.69	4.30
11 Jan	37.6	21.6	0.94	0.94	1.89	4.80
12 Jan	37.6	21.5	1.02	1.02	2.09	5.30
13 Jan	37.6	21.5	1.10	1.10	2.20	5.60
14 Jan	37.6	21.4	1.22	1.22	2.40	6.10
15 Jan	37.6	21.4	1.30	1.30	2.60	6.60
16 Jan	37.6	21.3	1.38	1.38	2.80	7.10
17 Jan	37.6	21.3	1.46	1.46	2.99	7.60
18 Jan	37.6	21.2	1.54	1.54	3.19	8.10
19 Jan	37.7	21.2	1.65	1.65	3.39	8.60
20 Jan	37.7	21.2	1.73	1.73	3.58	9.10
21 Jan	37.8	21.2	1.77	1.77	3.82	9.70
22 Jan	37.8	21.1	1.85	1.85	3.90	9.90
23 Jan	37.9	21.1	1.97	1.97	4.09	10.40
24 Jan	38.0	21.1	2.05	2.05	4.29	10.90
25 Jan	38.0	21.1	2.13	2.13	4.41	11.20
26 Jan	38.1	21.1	2.20	2.20	4.61	11.70
27 Jan	38.2	21.1	2.28	2.28	4.80	12.20
28 Jan	38.3	21.2	2.36	2.36	4.88	12.40
29 Jan	38.4	21.2	2.44	2.44	5.12	13.00
30 Jan	38.6	21.2	2.52	2.52	5.31	13.50
31 Jan	38.7	21.2	2.60	2.60	5.51	14.00

Day	High ºF	Low ºF	Precip. inch	Snow inch	Snow d. inch
01 Jan	30.0	17.1	0.13	1.50	2.0
02 Jan	23.0	17.1	0.00	0.00	2.0
03 Jan	-	-	-	-	-
04 Jan	-	-	-	-	-
05 Jan	30.9	10.0	-	0.00	0.0
06 Jan	50.0	18.0	0.00	0.00	0.0
07 Jan	51.1	30.9	0.00	0.00	0.0
08 Jan	54.0	30.9	0.00	0.00	0.0
09 Jan	60.1	30.9	0.00	0.00	0.0
10 Jan	-	-	-	-	-
11 Jan	-	-	-	-	-
12 Jan	37.0	28.0	-	0.00	0.0
13 Jan	35.1	21.9	0.00	0.00	0.0
14 Jan	53.1	30.9	0.00	0.00	0.0
15 Jan	41.0	16.0	0.12	0.51	1.0
16 Jan	24.1	15.1	0.00	0.00	0.0
17 Jan	-	-	-	-	-
18 Jan	-	-	-	-	-
19 Jan	-	-	-	-	-
20 Jan	39.9	7.0	-	0.00	0.0
21 Jan	39.0	7.0	0.00	0.00	0.0
22 Jan	37.0	12.9	0.20	0.00	0.0
23 Jan	37.0	12.9	0.00	0.00	0.0
24 Jan	-	-	-	-	-
25 Jan	-	-	-	-	-
26 Jan	28.9	1.9	-	9.49	10.0
27 Jan	19.9	1.0	0.00	0.00	-
28 Jan	14.0	-2.9	0.00	0.00	-
29 Jan	17.1	1.0	0.00	0.00	-
30 Jan	18.0	-0.9	0.00	0.00	-
31 Jan	-	-	-	-	-

	Jan 26	Normal
Average high temperature Av. high temp.	35.2 ºF	38 ºF
Average low temperature Av. low temp.	14.6 ºF	22 ºF
Total precipitation Total precip.	0.45 inch	2.59 inch
Total snowfall Total snowfall	11.50 inch	6 inch

Highest max temperature Highest max temp.	60.1 ºF	-
Lowest max temperature Lowest max temp.	14.0 ºF	-
Highest min temperature Highest min temp.	30.9 ºF	-
Lowest min temperature Lowest min temp.	-2.9 ºF	-

Past weather January 2026 incomplete - Missing data

USGS National Map — Open interactive map

Station Data

Monthly averages Monongahela
Longitude: -79.92, Latitude: 40.19
Average weather Monongahela, PA - 15063

Monthly: 1991-2020 normals
History: 2008-2026

Abbreviations

Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...