Point Forecast: Chicago Heights IL  41.51N 87.64W	Last Update: 9:36 pm CDT May 10, 2026

[hide menu]

Weather Elements Fire Weather Probabilistic Forecasts (Experimental) Description | Survey Temperature (°C) Dewpoint (°C) Heat Index (°C) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Mixing Height  x100ftx100m Trans. Wind  ktmphkm/hm/s 20ft Wind  ktmphkm/hm/s Vent Rate (x1000 mph-m) 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: 12am Mon, May 11 20261am Mon, May 11 20262am Mon, May 11 20263am Mon, May 11 20264am Mon, May 11 20265am Mon, May 11 20266am Mon, May 11 20267am Mon, May 11 20268am Mon, May 11 20269am Mon, May 11 202610am Mon, May 11 202611am Mon, May 11 202612pm Mon, May 11 20261pm Mon, May 11 20262pm Mon, May 11 20263pm Mon, May 11 20264pm Mon, May 11 20265pm Mon, May 11 20266pm Mon, May 11 20267pm Mon, May 11 20268pm Mon, May 11 20269pm Mon, May 11 202610pm Mon, May 11 202611pm Mon, May 11 202612am Tue, May 12 20261am Tue, May 12 20262am Tue, May 12 20263am Tue, May 12 20264am Tue, May 12 20265am Tue, May 12 20266am Tue, May 12 20267am Tue, May 12 20268am Tue, May 12 20269am Tue, May 12 202610am Tue, May 12 202611am Tue, May 12 202612pm Tue, May 12 20261pm Tue, May 12 20262pm Tue, May 12 20263pm Tue, May 12 20264pm Tue, May 12 20265pm Tue, May 12 20266pm Tue, May 12 20267pm Tue, May 12 20268pm Tue, May 12 20269pm Tue, May 12 202610pm Tue, May 12 202611pm Tue, May 12 202612am Wed, May 13 20261am Wed, May 13 20262am Wed, May 13 20263am Wed, May 13 20264am Wed, May 13 20265am Wed, May 13 20266am Wed, May 13 20267am Wed, May 13 20268am Wed, May 13 20269am Wed, May 13 202610am Wed, May 13 202611am Wed, May 13 202612pm Wed, May 13 20261pm Wed, May 13 20262pm Wed, May 13 20263pm Wed, May 13 20264pm Wed, May 13 20265pm Wed, May 13 20266pm Wed, May 13 20267pm Wed, May 13 20268pm Wed, May 13 20269pm Wed, May 13 202610pm Wed, May 13 202611pm Wed, May 13 202612am Thu, May 14 20261am Thu, May 14 20262am Thu, May 14 20263am Thu, May 14 20264am Thu, May 14 20265am Thu, May 14 20266am Thu, May 14 20267am Thu, May 14 20268am Thu, May 14 20269am Thu, May 14 202610am Thu, May 14 202611am Thu, May 14 202612pm Thu, May 14 20261pm Thu, May 14 20262pm Thu, May 14 20263pm Thu, May 14 20264pm Thu, May 14 20265pm Thu, May 14 20266pm Thu, May 14 20267pm Thu, May 14 20268pm Thu, May 14 20269pm Thu, May 14 202610pm Thu, May 14 202611pm Thu, May 14 202612am Fri, May 15 20261am Fri, May 15 20262am Fri, May 15 20263am Fri, May 15 20264am Fri, May 15 20265am Fri, May 15 20266am Fri, May 15 20267am Fri, May 15 20268am Fri, May 15 20269am Fri, May 15 202610am Fri, May 15 202611am Fri, May 15 2026

Date	05/11
Hour (CDT)	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Temperature (°C)	9	9	8	7	7	7	6	7	9	11	13	14	14	14	14	14	13	12	12	10	8	7	6	6
Dewpoint (°C)	0	0	1	1	1	2	3	3	3	3	3	2	1	1	0	-1	-1	-2	-2	-2	-2	-2	-2	-1
Heat Index (°C)
Surface Wind (mph)	5	5	5	5	3	5	5	6	7	9	11	11	14	14	13	14	14	13	11	11	9	8	7	6
Wind Dir	ESE	E	E	E	E	NE	NNE	NE	NE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NE	NE	NE	NE	NE	ENE	ENE
Gust												20			21			21
Sky Cover (%)	44	39	66	61	57	34	27	10	1	4	5	4	5	6	6	5	7	10	16	22	10	4	12	5
Precipitation Potential (%)	6	8	5	5	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	52	55	58	64	68	73	78	77	68	58	49	45	42	39	38	37	37	38	39	41	48	53	57	60
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date	05/12
Hour (CDT)	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Temperature (°C)	5	4	4	4	4	5	6	7	9	12	15	18	20	21	22	23	24	24	23	23	21	20	18	17
Dewpoint (°C)	-2	-2	-2	-2	-2	-2	-2	-1	1	3	4	6	7	8	9	9	9	10	10	11	11	11	11	10
Heat Index (°C)																	24	24
Surface Wind (mph)	5	5	5	6	6	7	8	9	10	11	14	15	16	18	20	21	21	21	20	18	16	14	13	10
Wind Dir	ENE	E	ESE	SE	SE	SSE	SSE	SSE	S	S	S	S	SSW	SSW	SSW	SW	SW	SW	WSW	WSW	WSW	WSW	WSW	WSW
Gust												24	25	28	30	32	33	33	32	30	26	24	21	18
Sky Cover (%)	11	9	8	6	6	22	32	45	72	71	70	70	70	70	74	79	83	76	69	62	59	55	52	40
Precipitation Potential (%)	0	0	0	0	10	10	10	7	7	7	7	7	7	29	29	29	29	29	29	47	47	47	47	47
Relative Humidity (%)	62	63	64	63	61	60	60	60	57	53	49	46	43	42	41	41	41	42	43	46	50	55	60	64
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc

English Units Forecast Discussion 7-Day Forecast Hourly Weather Graph Graphical Hazardous Weather Outlook Hazardous Weather Regional Weather Conditions Past Weather Information