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Point Forecast: 6 Miles NNE Chicago IL  41.9N 87.64W	Last Update: 12:15 pm CDT Sep 17, 2021

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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 Haines Index 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: 12pm Fri, Sep 17 20211pm Fri, Sep 17 20212pm Fri, Sep 17 20213pm Fri, Sep 17 20214pm Fri, Sep 17 20215pm Fri, Sep 17 20216pm Fri, Sep 17 20217pm Fri, Sep 17 20218pm Fri, Sep 17 20219pm Fri, Sep 17 202110pm Fri, Sep 17 202111pm Fri, Sep 17 202112am Sat, Sep 18 20211am Sat, Sep 18 20212am Sat, Sep 18 20213am Sat, Sep 18 20214am Sat, Sep 18 20215am Sat, Sep 18 20216am Sat, Sep 18 20217am Sat, Sep 18 20218am Sat, Sep 18 20219am Sat, Sep 18 202110am Sat, Sep 18 202111am Sat, Sep 18 202112pm Sat, Sep 18 20211pm Sat, Sep 18 20212pm Sat, Sep 18 20213pm Sat, Sep 18 20214pm Sat, Sep 18 20215pm Sat, Sep 18 20216pm Sat, Sep 18 20217pm Sat, Sep 18 20218pm Sat, Sep 18 20219pm Sat, Sep 18 202110pm Sat, Sep 18 202111pm Sat, Sep 18 202112am Sun, Sep 19 20211am Sun, Sep 19 20212am Sun, Sep 19 20213am Sun, Sep 19 20214am Sun, Sep 19 20215am Sun, Sep 19 20216am Sun, Sep 19 20217am Sun, Sep 19 20218am Sun, Sep 19 20219am Sun, Sep 19 202110am Sun, Sep 19 202111am Sun, Sep 19 202112pm Sun, Sep 19 20211pm Sun, Sep 19 20212pm Sun, Sep 19 20213pm Sun, Sep 19 20214pm Sun, Sep 19 20215pm Sun, Sep 19 20216pm Sun, Sep 19 20217pm Sun, Sep 19 20218pm Sun, Sep 19 20219pm Sun, Sep 19 202110pm Sun, Sep 19 202111pm Sun, Sep 19 202112am Mon, Sep 20 20211am Mon, Sep 20 20212am Mon, Sep 20 20213am Mon, Sep 20 20214am Mon, Sep 20 20215am Mon, Sep 20 20216am Mon, Sep 20 20217am Mon, Sep 20 20218am Mon, Sep 20 20219am Mon, Sep 20 202110am Mon, Sep 20 202111am Mon, Sep 20 202112pm Mon, Sep 20 20211pm Mon, Sep 20 20212pm Mon, Sep 20 20213pm Mon, Sep 20 20214pm Mon, Sep 20 20215pm Mon, Sep 20 20216pm Mon, Sep 20 20217pm Mon, Sep 20 20218pm Mon, Sep 20 20219pm Mon, Sep 20 202110pm Mon, Sep 20 202111pm Mon, Sep 20 202112am Tue, Sep 21 20211am Tue, Sep 21 20212am Tue, Sep 21 20213am Tue, Sep 21 20214am Tue, Sep 21 20215am Tue, Sep 21 20216am Tue, Sep 21 20217am Tue, Sep 21 20218am Tue, Sep 21 20219am Tue, Sep 21 202110am Tue, Sep 21 202111am Tue, Sep 21 202112pm Tue, Sep 21 20211pm Tue, Sep 21 20212pm Tue, Sep 21 20213pm Tue, Sep 21 20214pm Tue, Sep 21 20215pm Tue, Sep 21 20216pm Tue, Sep 21 20217pm Tue, Sep 21 20218pm Tue, Sep 21 20219pm Tue, Sep 21 202110pm Tue, Sep 21 202111pm Tue, Sep 21 2021

Date	09/17												09/18
Hour (CDT)	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11
Temperature (°F)	83	84	85	86	86	85	83	80	77	75	74	72	70	69	69	68	67	67	67	66	69	71	71	73
Dewpoint (°F)	61	60	59	58	58	58	58	59	61	63	64	64	64	64	63	62	61	60	59	59	59	59	59	58
Heat Index (°F)	83	84	85	85	85	84	83	81	77	75
Surface Wind (mph)	11	11	11	11	11	10	8	7	8	9	11	13	13	14	15	15	15	16	16	17	16	16	15	14
Wind Dir	SW	WSW	WSW	SW	SW	SW	SW	SW	W	NNW	N	N	N	NNE	NNE	NNE	NNE	NE	NE	NE	NE	ENE	ENE	ENE
Gust	17	17	18	18	17									20	21	21	21	22	23	23	23	22	21	20
Sky Cover (%)	7	5	8	12	15	35	55	75	74	73	72	74	75	78	73	69	65	60	55	51	47	43	39	34
Precipitation Potential (%)	0	0	0	1	5	10	30	34	32	25	18	16	13	12	12	12	10	10	10	1	1	1	0	0
Relative Humidity (%)	47	44	41	39	39	40	43	49	58	66	71	76	81	84	81	81	81	78	75	78	70	66	66	59
Rain	--	--	--	--	--	--	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	SChc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date													09/19
Hour (CDT)	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11
Temperature (°F)	74	74	73	73	72	70	69	68	67	67	67	67	67	67	67	66	66	65	65	65	67	70	72	74
Dewpoint (°F)	57	56	55	55	55	55	56	56	57	57	58	59	60	60	60	60	59	60	60	60	61	61	62	62
Heat Index (°F)
Surface Wind (mph)	13	11	11	11	11	11	10	10	9	8	7	6	6	6	6	6	6	6	6	6	6	7	7	8
Wind Dir	ENE	ENE	ENE	ENE	NE	NE	NE	NE	NE	ENE	ENE	E	E	E	ESE	ESE	SE	SE	SE	SE	SE	SSE	SSE	SSE
Gust	18	17	16	16						13
Sky Cover (%)	29	24	19	14	10	9	7	6	5	3	2	2	2	2	3	4	5	8	13	16	16	15	14	15
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	55	53	53	53	55	59	63	65	70	70	73	75	78	78	78	81	78	84	84	84	81	73	71	66
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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