Three-Month Temperature Outlook
Issued: December 2017

DECATUR, IL
MACON County, Coop ID: 112193 Elevation: 620 ft. Latitude: 39° 49' N Longitude: 88° 57' W

	JFM	FMA	MAM	AMJ	MJJ	JJA	JAS	ASO	SON	OND	NDJ	DJF	JFM
**R	1.0	0.9	1.0	1.0	0.9	1.0	0.9	1.0	1.0	1.0	1.0	1.0	1.0
99%	39.9	47.7	58.9	68.3	75.0	78.9	77.4	70.1	60.1	49.3	41.2	37.0	40.0
98%	39.2	47.1	58.2	67.7	74.5	78.4	76.8	69.6	59.6	48.6	40.4	36.2	39.3
97%	38.7	46.7	57.8	67.4	74.2	78.1	76.5	69.3	59.3	48.2	39.8	35.6	38.8
96%	38.3	46.5	57.5	67.1	74.0	77.8	76.2	69.0	59.0	47.9	39.4	35.2	38.4
95%	38.0	46.2	57.2	66.9	73.8	77.6	76.0	68.8	58.8	47.6	39.1	34.9	38.1
90%	37.0	45.4	56.4	66.2	73.2	76.9	75.3	68.1	58.1	46.8	38.0	33.8	37.1
80%	35.8	44.5	55.3	65.3	72.4	76.1	74.4	67.3	57.3	45.7	36.6	32.4	35.9
70%	34.9	43.8	54.6	64.6	71.9	75.5	73.7	66.7	56.7	45.0	35.6	31.4	35.0
60%	34.1	43.2	53.9	64.1	71.4	75.0	73.2	66.2	56.2	44.3	34.8	30.6	34.2
50%	33.4	42.6	53.3	63.6	71.0	74.5	72.7	65.7	55.7	43.7	34.0	29.8	33.5
40%	32.7	42.0	52.7	63.1	70.6	74.0	72.2	65.2	55.2	43.1	33.2	29.0	32.8
30%	31.9	41.4	52.0	62.6	70.1	73.5	71.7	64.7	54.7	42.4	32.4	28.2	32.0
20%	31.0	40.7	51.3	61.9	69.6	72.9	71.0	64.1	54.1	41.7	31.4	27.2	31.1
10%	29.8	39.8	50.2	61.0	68.8	72.1	70.1	63.3	53.3	40.6	30.0	25.8	29.9
5%	28.8	39.0	49.4	60.3	68.2	71.4	69.4	62.6	52.6	39.8	28.9	24.7	28.9
4%	28.5	38.7	49.1	60.1	68.0	71.2	69.2	62.4	52.4	39.5	28.6	24.4	28.6
3%	28.1	38.5	48.8	59.8	67.8	70.9	68.9	62.1	52.1	39.2	28.2	24.0	28.2
2%	27.6	38.1	48.4	59.5	67.5	70.6	68.6	61.8	51.8	38.8	27.6	23.4	27.7
1%	26.9	37.5	47.7	58.9	67.0	70.1	68.0	61.3	51.3	38.1	26.8	22.6	27.0
*Mean	33.4	42.6	53.3	63.6	71.0	74.5	72.7	65.7	55.7	43.7	34.0	29.8	33.5
StDev	2.8	2.2	2.4	2.0	1.7	1.9	2.0	1.9	1.9	2.4	3.1	3.1	2.8