Point Forecast: 4 Miles NE Chicago IL  41.88N 87.62W	Last Update: 1:21 am CDT Sep 21, 2026

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Weather Elements Fire Weather 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 Mixing Height  x100ftx100m Trans. Wind  ktmphkm/hm/s 20ft Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft) 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: 2am Mon, Sep 21 20263am Mon, Sep 21 20264am Mon, Sep 21 20265am Mon, Sep 21 20266am Mon, Sep 21 20267am Mon, Sep 21 20268am Mon, Sep 21 20269am Mon, Sep 21 202610am Mon, Sep 21 202611am Mon, Sep 21 202612pm Mon, Sep 21 20261pm Mon, Sep 21 20262pm Mon, Sep 21 20263pm Mon, Sep 21 20264pm Mon, Sep 21 20265pm Mon, Sep 21 20266pm Mon, Sep 21 20267pm Mon, Sep 21 20268pm Mon, Sep 21 20269pm Mon, Sep 21 202610pm Mon, Sep 21 202611pm Mon, Sep 21 202612am Tue, Sep 22 20261am Tue, Sep 22 20262am Tue, Sep 22 20263am Tue, Sep 22 20264am Tue, Sep 22 20265am Tue, Sep 22 20266am Tue, Sep 22 20267am Tue, Sep 22 20268am Tue, Sep 22 20269am Tue, Sep 22 202610am Tue, Sep 22 202611am Tue, Sep 22 202612pm Tue, Sep 22 20261pm Tue, Sep 22 20262pm Tue, Sep 22 20263pm Tue, Sep 22 20264pm Tue, Sep 22 20265pm Tue, Sep 22 20266pm Tue, Sep 22 20267pm Tue, Sep 22 20268pm Tue, Sep 22 20269pm Tue, Sep 22 202610pm Tue, Sep 22 202611pm Tue, Sep 22 202612am Wed, Sep 23 20261am Wed, Sep 23 20262am Wed, Sep 23 20263am Wed, Sep 23 20264am Wed, Sep 23 20265am Wed, Sep 23 20266am Wed, Sep 23 20267am Wed, Sep 23 20268am Wed, Sep 23 20269am Wed, Sep 23 202610am Wed, Sep 23 202611am Wed, Sep 23 202612pm Wed, Sep 23 20261pm Wed, Sep 23 20262pm Wed, Sep 23 20263pm Wed, Sep 23 20264pm Wed, Sep 23 20265pm Wed, Sep 23 20266pm Wed, Sep 23 20267pm Wed, Sep 23 20268pm Wed, Sep 23 20269pm Wed, Sep 23 202610pm Wed, Sep 23 202611pm Wed, Sep 23 202612am Thu, Sep 24 20261am Thu, Sep 24 20262am Thu, Sep 24 20263am Thu, Sep 24 20264am Thu, Sep 24 20265am Thu, Sep 24 20266am Thu, Sep 24 20267am Thu, Sep 24 20268am Thu, Sep 24 20269am Thu, Sep 24 202610am Thu, Sep 24 202611am Thu, Sep 24 202612pm Thu, Sep 24 20261pm Thu, Sep 24 20262pm Thu, Sep 24 20263pm Thu, Sep 24 20264pm Thu, Sep 24 20265pm Thu, Sep 24 20266pm Thu, Sep 24 20267pm Thu, Sep 24 20268pm Thu, Sep 24 20269pm Thu, Sep 24 202610pm Thu, Sep 24 202611pm Thu, Sep 24 202612am Fri, Sep 25 20261am Fri, Sep 25 20262am Fri, Sep 25 20263am Fri, Sep 25 20264am Fri, Sep 25 20265am Fri, Sep 25 20266am Fri, Sep 25 20267am Fri, Sep 25 20268am Fri, Sep 25 20269am Fri, Sep 25 202610am Fri, Sep 25 202611am Fri, Sep 25 202612pm Fri, Sep 25 20261pm Fri, Sep 25 2026

Date	09/21																						09/22
Hour (CDT)	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01
Temperature (°F)	63	62	61	62	62	61	61	63	64	65	65	65	64	65	65	65	65	64	63	63	63	62	61	61
Dewpoint (°F)	57	57	56	57	56	56	57	56	56	56	56	56	56	56	55	55	54	54	55	55	54	54	53	53
Heat Index (°F)
Surface Wind (mph)	22	22	21	21	20	20	21	21	21	21	21	20	20	18	18	18	18	18	20	20	20	20	18	18
Wind Dir	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	NE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE
Gust					25	25					26	25	25	25	25	24	24	25	25	25	26	25	24	23
Sky Cover (%)	100	100	100	98	97	95	94	93	92	94	95	96	91	85	80	82	84	87	80	73	67	63	59	56
Precipitation Potential (%)	25	25	25	25	25	25	25	25	15	15	15	3	3	3	3	3	3	3	2	2	2	2	2	6
Relative Humidity (%)	82	82	84	84	84	85	86	80	74	72	73	73	74	73	72	70	69	71	73	75	73	73	74	75
Rain	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																							09/23
Hour (CDT)	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01
Temperature (°F)	60	59	59	58	58	58	59	60	61	62	62	62	62	63	63	64	64	63	62	62	60	60	60	59
Dewpoint (°F)	52	51	51	50	50	50	50	51	50	50	51	51	51	51	50	50	50	51	51	51	51	51	51	51
Heat Index (°F)
Surface Wind (mph)	17	17	16	16	16	16	17	17	18	18	18	18	18	18	18	18	18	18	18	18	20	18	17	16
Wind Dir	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	NE	NE	NE	NE	NE	NE	NE	ENE	ENE	ENE	ENE	ENE	ENE
Gust	22		21	21	21	21				23	23	24	24	24	23	23	23	23	23	24		23	22	21
Sky Cover (%)	56	56	56	58	60	62	65	67	70	67	65	63	56	49	42	38	34	30	33	37	40	41	41	42
Precipitation Potential (%)	6	6	5	5	5	7	10	9	9	7	5	3	1	1	1	0	0	3	3	3	3	3	3	1
Relative Humidity (%)	74	75	75	76	75	74	72	70	68	66	65	67	67	64	62	61	61	63	66	67	71	73	74	76
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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