Climate Sullivan - Illinois

	JanJa	FebFe	MarMa	AprAp	MayMa	JunJu
Average high in ºF Av. high Hi	35	40	51	65	75	83
Average low in ºF Av. low Lo	19	22	31	42	53	63
Days with precipitation Days precip. DP	8	7	8	10	11	10
Av. precipitation in inch Av. precip. Pre.	2.41	2.23	2.83	4.48	4.98	4.95
Av. snowfall in inch Snowfall Sn	5	2	1	0	0	0

	JulJu	AugAu	SepSe	OctOc	NovNo	DecDe
Average high in ºF Av. high Hi	86	85	80	67	52	40
Average low in ºF Av. low Lo	65	62	55	44	33	24
Days with precipitation Days precip. DP	8	6	6	8	8	8
Av. precipitation in inch Av. precip. Pre.	4.35	3.16	2.71	3.30	3.45	2.75
Av. snowfall in inch Snowfall Sn	0	0	0	0	0	4

Sullivan Climate Graph - Illinois Climate Chart

Day	High ºF	Low ºF	Prec/mo inch	Prec/yr inch	Snow/mo inch	Snow/yr inch
1 Jan	35.1	19.7	0.08	0.08	0.12	0.30
2 Jan	35.0	19.5	0.20	0.20	0.31	0.80
3 Jan	34.9	19.4	0.28	0.28	0.39	1.00
4 Jan	34.8	19.2	0.35	0.35	0.51	1.30
5 Jan	34.7	19.1	0.47	0.47	0.71	1.80
6 Jan	34.6	18.9	0.55	0.55	0.91	2.30
7 Jan	34.5	18.8	0.63	0.63	0.98	2.50
8 Jan	34.4	18.6	0.71	0.71	1.18	3.00
9 Jan	34.3	18.5	0.79	0.79	1.42	3.60
10 Jan	34.3	18.3	0.87	0.87	1.50	3.80
11 Jan	34.2	18.2	0.94	0.94	1.69	4.30
12 Jan	34.2	18.1	1.02	1.02	1.81	4.60

Day	High ºF	Low ºF	Precip. inch	Snow inch	Snow d. inch
01 Dec	53.1	37.0	0.35	0.00	0.0
02 Dec	39.0	30.0	0.12	0.00	0.0
03 Dec	33.1	28.0	0.00	0.00	0.0
04 Dec	43.0	28.0	0.00	0.00	0.0
05 Dec	50.0	26.1	0.00	0.00	0.0
06 Dec	55.9	28.0	0.00	0.00	0.0
07 Dec	44.1	19.9	0.00	0.00	0.0
08 Dec	39.9	30.9	0.00	0.00	0.0
09 Dec	55.0	-	0.29	0.00	0.0
10 Dec	50.0	17.1	0.02	0.00	0.0
11 Dec	28.0	16.0	0.00	0.00	0.0
12 Dec	36.0	18.0	0.00	0.00	0.0
13 Dec	44.1	30.9	0.00	0.00	0.0
14 Dec	45.0	25.0	0.00	0.00	0.0
15 Dec	36.0	18.0	0.00	0.00	0.0
16 Dec	36.0	18.0	0.46	5.51	6.0
17 Dec	28.9	17.1	0.11	2.01	6.0
18 Dec	28.9	16.0	0.00	0.00	4.0
19 Dec	21.9	7.0	0.00	0.00	4.0
20 Dec	35.1	17.1	0.00	0.00	3.0
21 Dec	39.9	19.0	0.00	0.00	-
22 Dec	42.1	21.0	0.00	0.00	-
23 Dec	48.9	25.0	0.00	0.00	1.0
24 Dec	52.0	25.0	0.00	0.00	0.0
25 Dec	50.0	27.0	0.00	0.00	0.0
26 Dec	61.0	37.0	0.00	0.00	0.0
27 Dec	64.9	37.0	0.00	0.00	0.0

	Dec 19	Normal
Average high temperature Av. high temp.	43.0 ºF	35 ºF
Average low temperature Av. low temp.	23.8 ºF	19 ºF
Total precipitation Total precip.	1.35 inch	2.41 inch
Total snowfall Total snowfall	7.52 inch	5 inch

Highest max temperature Highest max temp.	64.9 ºF	-
Lowest max temperature Lowest max temp.	21.9 ºF	-
Highest min temperature Highest min temp.	37.0 ºF	-
Lowest min temperature Lowest min temp.	7.0 ºF	-

Past weather December 2019 incomplete - Missing data

Station Data

Monthly averages Sullivan
Longitude: -88.6078, Latitude: 39.5995
Average weather Sullivan, IL - 61951

Monthly: 1991-2020 normals
History: 2008-2019

Abbreviations

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