Climate Lewistown - Montana

	JanJa	FebFe	MarMa	AprAp	MayMa	JunJu
Average high in ºF Av. high Hi	34	35	44	53	63	71
Average low in ºF Av. low Lo	13	14	21	29	37	45
Days with precipitation Days precip. DP	7	8	9	11	13	13
Av. precipitation in inch Av. precip. Pre.	0.58	0.49	0.87	1.71	2.88	3.35

	JulJu	AugAu	SepSe	OctOc	NovNo	DecDe
Average high in ºF Av. high Hi	82	81	70	56	43	35
Average low in ºF Av. low Lo	51	50	42	31	21	14
Days with precipitation Days precip. DP	10	9	8	9	7	7
Av. precipitation in inch Av. precip. Pre.	1.76	1.69	1.39	1.27	0.67	0.51

Lewistown Climate Graph - Montana Climate Chart

Day	High ºF	Low ºF	Prec/mo inch	Prec/yr inch	Snow/mo inch	Snow/yr inch
1 Jan	33.5	11.8	0.04	0.04	0.39	1.00
2 Jan	33.5	11.9	0.04	0.04	0.79	2.00
3 Jan	33.6	12.0	0.08	0.08	1.10	2.80
4 Jan	33.6	12.0	0.08	0.08	1.50	3.80
5 Jan	33.7	12.1	0.12	0.12	1.89	4.80
6 Jan	33.7	12.2	0.12	0.12	2.20	5.60
7 Jan	33.8	12.3	0.16	0.16	2.60	6.60
8 Jan	33.9	12.4	0.16	0.16	2.99	7.60
9 Jan	33.9	12.5	0.20	0.20	3.31	8.40
10 Jan	34.0	12.6	0.20	0.20	3.70	9.40
11 Jan	34.0	12.7	0.24	0.24	4.02	10.20
12 Jan	34.1	12.8	0.24	0.24	4.41	11.20

Day	High ºF	Low ºF	Precip. inch	Snow inch	Snow d. inch
01 Dec	37.9	3.0	0.00	-	13.0
02 Dec	39.9	28.9	0.00	-	8.0
03 Dec	42.1	28.0	0.00	-	5.0
04 Dec	44.1	30.9	0.00	0.00	2.0
05 Dec	36.0	21.9	T	T	1.0
06 Dec	45.0	24.1	0.00	0.00	1.0
07 Dec	48.0	37.9	T	0.00	T
08 Dec	37.9	0.0	0.03	2.01	T
09 Dec	33.1	1.0	0.09	5.00	1.0
10 Dec	37.9	12.0	T	T	6.0
11 Dec	39.0	15.1	T	T	4.0
12 Dec	45.0	19.9	0.00	0.00	-
13 Dec	33.1	15.1	0.14	-	0.0
14 Dec	28.0	10.0	0.01	-	-
15 Dec	28.9	16.0	T	-	-
16 Dec	28.0	12.0	0.00	0.00	2.0
17 Dec	41.0	25.0	0.00	0.00	1.0
18 Dec	44.1	25.0	0.00	-	1.0
19 Dec	42.1	23.0	0.00	0.00	0.0
20 Dec	48.9	37.9	0.00	0.00	0.0
21 Dec	55.0	43.0	0.00	0.00	0.0
22 Dec	55.9	27.0	0.00	0.00	0.0
23 Dec	53.1	24.1	0.00	-	0.0
24 Dec	39.0	21.9	T	T	0.0
25 Dec	30.9	19.9	0.00	0.00	0.0
26 Dec	34.0	12.0	0.00	0.00	0.0

	Dec 19	Normal
Average high temperature Av. high temp.	40.3 ºF	34 ºF
Average low temperature Av. low temp.	20.6 ºF	13 ºF
Total precipitation Total precip.	0.27 inch	0.58 inch
Total snowfall Total snowfall	- inch	0 inch

Highest max temperature Highest max temp.	55.9 ºF	-
Lowest max temperature Lowest max temp.	28.0 ºF	-
Highest min temperature Highest min temp.	43.0 ºF	-
Lowest min temperature Lowest min temp.	0.0 ºF	-

Past weather December 2019 incomplete - Missing data

Station Data

Monthly averages Lewistown
Longitude: -109.467, Latitude: 47.0493
Average weather Lewistown, MT - 59457

Monthly: 1991-2020 normals
History: 2007-2019

Abbreviations

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