National Weather Service

Point Forecast: Palos Heights IL 41.67N 87.81W	Last Update: 4:06 am CDT May 19, 2025

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Weather Elements	Fire Weather	Probabilistic Forecasts (Experimental) Description \| Survey
Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog	Mixing Height Trans. Wind 20ft Wind Vent Rate (x1000 mph-ft)	Quantitative Precipitation info 0.100.250.501.00 Snowfall info 0.1in1in3in6in12in

48-Hour Period Starting:


Date	05/19																		05/20
Hour (CDT)	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05
Temperature (°F)	46	47	48	49	50	52	54	56	57	58	57	57	57	56	55	54	56	57	57	56	55	54	53	50
Dewpoint (°F)	40	40	40	41	41	41	42	42	43	43	44	44	44	44	45	45	46	46	46	45	44	43	42	41
Heat Index (°F)
Surface Wind (mph)	11	13	13	13	13	13	13	13	13	14	14	14	14	14	14	15	15	16	16	17	18	20	21	21
Wind Dir	NE	NE	NE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	E	E	E	E	E	E	E
Gust	20	21	21	21	20	18			18	20	21	21	20	20	20	20	21	23	25	28	29	31	32	33
Sky Cover (%)	66	77	77	77	77	76	74	73	69	65	62	58	54	51	57	63	70	76	82	89	91	92	94	96
Precipitation Potential (%)	0	1	2	4	5	6	8	9	10	11	11	10	9	7	7	7	20	20	20	70	70	70	85	85
Relative Humidity (%)	79	76	74	74	71	66	64	59	59	57	62	62	62	64	69	71	69	67	67	66	66	66	66	71
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	Lkly	Lkly	Lkly	Ocnl	Ocnl
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc

Date																			05/21
Hour (CDT)	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05
Temperature (°F)	48	49	48	50	51	53	53	54	55	56	58	59	59	59	58	57	57	56	55	54	53	53	52	52
Dewpoint (°F)	41	41	42	44	46	48	49	50	51	52	52	53	53	53	52	52	51	51	51	51	50	50	50	50
Heat Index (°F)
Surface Wind (mph)	21	21	21	21	21	21	21	21	21	20	18	17	16	15	14	14	13	11	11	10	10	9	9	9
Wind Dir	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	ENE	ENE	ENE	ENE	ENE	NE
Gust	34	34	34	33	33	33	34	34	33	32	30	28	26	24	23	22	21	20	18	17	16	16	16	16
Sky Cover (%)	98	100	100	100	100	100	100	100	97	93	90	89	88	87	87	87	87	85	83	81	84	86	89	87
Precipitation Potential (%)	85	100	100	100	100	100	100	100	100	100	95	95	95	83	83	83	83	83	83	50	50	50	50	50
Relative Humidity (%)	77	74	80	80	83	83	86	86	86	86	80	80	80	80	80	83	80	83	86	90	89	89	93	93
Rain	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Chc	Chc	Chc	Chc	Chc
Thunder	SChc	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	--	--

International System of Units	Forecast Discussion
7-Day Forecast	Hourly Weather Graph

Graphical Hazardous Weather Outlook	Hazardous Weather
Regional Weather Conditions	Past Weather Information