Point Forecast: Carbondale IL  37.72N 89.23W	Last Update: 5:31 pm CDT May 19, 2026

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Weather Elements Weather/Precipitation Probabilistic Forecasts (Experimental) Description | Survey Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Quantitative Precipitation  3-hr6-hr12-hr24-hr   info     0.100.250.501.00 Snowfall  3-hr6-hr12-hr24-hr   info     0.1in1in3in6in12in

48-Hour Period Starting: 5pm Tue, May 19 20266pm Tue, May 19 20267pm Tue, May 19 20268pm Tue, May 19 20269pm Tue, May 19 202610pm Tue, May 19 202611pm Tue, May 19 202612am Wed, May 20 20261am Wed, May 20 20262am Wed, May 20 20263am Wed, May 20 20264am Wed, May 20 20265am Wed, May 20 20266am Wed, May 20 20267am Wed, May 20 20268am Wed, May 20 20269am Wed, May 20 202610am Wed, May 20 202611am Wed, May 20 202612pm Wed, May 20 20261pm Wed, May 20 20262pm Wed, May 20 20263pm Wed, May 20 20264pm Wed, May 20 20265pm Wed, May 20 20266pm Wed, May 20 20267pm Wed, May 20 20268pm Wed, May 20 20269pm Wed, May 20 202610pm Wed, May 20 202611pm Wed, May 20 202612am Thu, May 21 20261am Thu, May 21 20262am Thu, May 21 20263am Thu, May 21 20264am Thu, May 21 20265am Thu, May 21 20266am Thu, May 21 20267am Thu, May 21 20268am Thu, May 21 20269am Thu, May 21 202610am Thu, May 21 202611am Thu, May 21 202612pm Thu, May 21 20261pm Thu, May 21 20262pm Thu, May 21 20263pm Thu, May 21 20264pm Thu, May 21 20265pm Thu, May 21 20266pm Thu, May 21 20267pm Thu, May 21 20268pm Thu, May 21 20269pm Thu, May 21 202610pm Thu, May 21 202611pm Thu, May 21 202612am Fri, May 22 20261am Fri, May 22 20262am Fri, May 22 20263am Fri, May 22 20264am Fri, May 22 20265am Fri, May 22 20266am Fri, May 22 20267am Fri, May 22 20268am Fri, May 22 20269am Fri, May 22 202610am Fri, May 22 202611am Fri, May 22 202612pm Fri, May 22 20261pm Fri, May 22 20262pm Fri, May 22 20263pm Fri, May 22 20264pm Fri, May 22 20265pm Fri, May 22 20266pm Fri, May 22 20267pm Fri, May 22 20268pm Fri, May 22 20269pm Fri, May 22 202610pm Fri, May 22 202611pm Fri, May 22 202612am Sat, May 23 20261am Sat, May 23 20262am Sat, May 23 20263am Sat, May 23 20264am Sat, May 23 20265am Sat, May 23 20266am Sat, May 23 20267am Sat, May 23 20268am Sat, May 23 20269am Sat, May 23 202610am Sat, May 23 202611am Sat, May 23 202612pm Sat, May 23 20261pm Sat, May 23 20262pm Sat, May 23 20263pm Sat, May 23 20264pm Sat, May 23 20265pm Sat, May 23 20266pm Sat, May 23 20267pm Sat, May 23 20268pm Sat, May 23 20269pm Sat, May 23 202610pm Sat, May 23 202611pm Sat, May 23 202612am Sun, May 24 20261am Sun, May 24 20262am Sun, May 24 20263am Sun, May 24 20264am Sun, May 24 2026

Date	05/19							05/20
Hour (CDT)	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16
Temperature (°F)	82	82	82	80	76	71	70	69	68	68	66	65	64	63	60	60	60	60	63	64	64	66	66	66
Dewpoint (°F)	70	71	71	70	70	68	67	66	66	65	64	63	62	61	60	60	59	59	59	59	59	59	59	59
Heat Index (°F)	86	86	86	83	76
Surface Wind (mph)	5	5	3	3	2	2	2	2	3	5	5	7	7	8	9	8	8	8	8	8	8	9	9	9
Wind Dir	WSW	WSW	WSW	WSW	SW	WNW	NW	NNW	NNW	N	N	N	N	N	N	N	N	NNE	NNE	N	N	N	NNE	NNE
Gust
Sky Cover (%)	51	61	71	74	74	71	83	84	85	85	86	93	93	90	88	84	85	91	84	88	87	88	84	88
Precipitation Potential (%)	36	34	33	33	33	39	45	52	58	49	57	60	66	64	52	53	41	37	33	25	19	16	16	14
Relative Humidity (%)	67	69	69	72	82	90	90	90	93	90	93	93	93	93	100	100	96	96	87	83	83	79	79	79
Rain	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Lkly	Chc	Lkly	Lkly	Lkly	Lkly	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	--
Thunder	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	SChc	SChc	SChc	--
Date								05/21
Hour (CDT)	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16
Temperature (°F)	67	67	68	67	65	64	64	63	62	62	60	59	59	57	59	60	62	65	67	69	70	71	71	72
Dewpoint (°F)	59	57	57	57	57	57	57	56	56	56	56	55	55	54	55	55	56	57	58	60	61	62	62	62
Heat Index (°F)
Surface Wind (mph)	9	9	8	7	6	6	5	5	5	5	5	5	5	6	6	6	6	7	7	8	8	8	8	8
Wind Dir	NNE	NNE	NNE	NNE	NE	NE	NE	NE	NE	NE	NE	NNE	NNE	NE	NNE	NE	NE	NE	NE	ENE	ENE	ENE	ENE	ENE
Gust
Sky Cover (%)	86	77	77	70	73	71	66	64	58	57	62	70	77	76	71	84	83	81	80	78	77	79	81	83
Precipitation Potential (%)	0	0	0	9	6	3	4	8	3	3	3	3	3	3	5	5	5	5	5	5	11	11	11	11
Relative Humidity (%)	75	70	68	70	75	78	78	78	81	81	87	87	87	90	87	84	81	75	73	73	73	73	73	71
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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