Point Forecast: Sleepy Hollow IL  42.1N 88.31W	Last Update: 3:46 pm CDT Mar 9, 2026

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Weather Elements Fire Weather Probabilistic Forecasts (Experimental) Description | Survey Temperature (°C) Dewpoint (°C) Wind Chill (°C) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Snow Freezing Rain Sleet 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: 3pm Mon, Mar 9 20264pm Mon, Mar 9 20265pm Mon, Mar 9 20266pm Mon, Mar 9 20267pm Mon, Mar 9 20268pm Mon, Mar 9 20269pm Mon, Mar 9 202610pm Mon, Mar 9 202611pm Mon, Mar 9 202612am Tue, Mar 10 20261am Tue, Mar 10 20262am Tue, Mar 10 20263am Tue, Mar 10 20264am Tue, Mar 10 20265am Tue, Mar 10 20266am Tue, Mar 10 20267am Tue, Mar 10 20268am Tue, Mar 10 20269am Tue, Mar 10 202610am Tue, Mar 10 202611am Tue, Mar 10 202612pm Tue, Mar 10 20261pm Tue, Mar 10 20262pm Tue, Mar 10 20263pm Tue, Mar 10 20264pm Tue, Mar 10 20265pm Tue, Mar 10 20266pm Tue, Mar 10 20267pm Tue, Mar 10 20268pm Tue, Mar 10 20269pm Tue, Mar 10 202610pm Tue, Mar 10 202611pm Tue, Mar 10 202612am Wed, Mar 11 20261am Wed, Mar 11 20262am Wed, Mar 11 20263am Wed, Mar 11 20264am Wed, Mar 11 20265am Wed, Mar 11 20266am Wed, Mar 11 20267am Wed, Mar 11 20268am Wed, Mar 11 20269am Wed, Mar 11 202610am Wed, Mar 11 202611am Wed, Mar 11 202612pm Wed, Mar 11 20261pm Wed, Mar 11 20262pm Wed, Mar 11 20263pm Wed, Mar 11 20264pm Wed, Mar 11 20265pm Wed, Mar 11 20266pm Wed, Mar 11 20267pm Wed, Mar 11 20268pm Wed, Mar 11 20269pm Wed, Mar 11 202610pm Wed, Mar 11 202611pm Wed, Mar 11 202612am Thu, Mar 12 20261am Thu, Mar 12 20262am Thu, Mar 12 20263am Thu, Mar 12 20264am Thu, Mar 12 20265am Thu, Mar 12 20266am Thu, Mar 12 20267am Thu, Mar 12 20268am Thu, Mar 12 20269am Thu, Mar 12 202610am Thu, Mar 12 202611am Thu, Mar 12 202612pm Thu, Mar 12 20261pm Thu, Mar 12 20262pm Thu, Mar 12 20263pm Thu, Mar 12 20264pm Thu, Mar 12 20265pm Thu, Mar 12 20266pm Thu, Mar 12 20267pm Thu, Mar 12 20268pm Thu, Mar 12 20269pm Thu, Mar 12 202610pm Thu, Mar 12 202611pm Thu, Mar 12 202612am Fri, Mar 13 20261am Fri, Mar 13 20262am Fri, Mar 13 20263am Fri, Mar 13 20264am Fri, Mar 13 20265am Fri, Mar 13 20266am Fri, Mar 13 20267am Fri, Mar 13 20268am Fri, Mar 13 20269am Fri, Mar 13 202610am Fri, Mar 13 202611am Fri, Mar 13 202612pm Fri, Mar 13 20261pm Fri, Mar 13 20262pm Fri, Mar 13 20263pm Fri, Mar 13 20264pm Fri, Mar 13 20265pm Fri, Mar 13 20266pm Fri, Mar 13 20267pm Fri, Mar 13 20268pm Fri, Mar 13 20269pm Fri, Mar 13 202610pm Fri, Mar 13 202611pm Fri, Mar 13 202612am Sat, Mar 14 20261am Sat, Mar 14 20262am Sat, Mar 14 2026

Date	03/09									03/10
Hour (CDT)	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14
Temperature (°C)	21	22	21	21	18	16	15	14	13	13	12	12	12	11	10	10	10	9	9	9	9	9	9	9
Dewpoint (°C)	8	8	8	9	9	9	10	11	11	11	11	11	11	11	10	10	8	7	7	7	7	7	6	5
Wind Chill (°C)															9	9	9	8	8	7	7	7	7	7
Surface Wind (mph)	14	13	10	8	6	5	5	5	5	6	6	7	7	7	7	7	7	7	8	9	9	10	10	11
Wind Dir	SW	SW	SW	WSW	SW	SW	S	S	S	SSE	SE	SE	SE	SE	ESE	ENE	NE	NE	NE	NE	NE	NE	NE	NE
Gust	22
Sky Cover (%)	4	4	6	16	19	23	27	32	35	38	42	45	48	52	50	48	46	54	62	70	67	63	60	60
Precipitation Potential (%)	0	1	1	1	2	2	2	2	3	3	1	2	3	5	3	2	2	2	2	2	2	2	4	13
Relative Humidity (%)	42	41	43	47	57	65	72	78	82	85	88	90	90	97	100	98	90	86	84	85	87	83	79	74
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date										03/11
Hour (CDT)	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14
Temperature (°C)	9	9	8	7	6	6	6	6	6	6	5	4	4	4	5	5	4	4	5	5	6	5	5	5
Dewpoint (°C)	5	5	4	4	4	4	4	5	6	6	5	4	4	4	4	4	4	4	4	3	3	3	2	2
Wind Chill (°C)	7	7	6	4	3	3	3	3	3	2	1	1	1	1	1	1	0	0	0	1	1	1	0	-1
Surface Wind (mph)	11	13	13	11	11	11	11	11	11	11	11	13	13	13	13	14	15	15	16	16	17	18	18	20
Wind Dir	NE	NE	NE	ENE	ENE	ENE	ENE	ENE	NE	NE	NE	NE	NNE	NNE	NNE	N	N	N	N	N	N	NNW	NNW	NNW
Gust														21	21	23	24	24	25	26	26	28	28	29
Sky Cover (%)	59	59	69	78	88	89	92	94	94	95	95	95	94	94	94	95	95	95	96	96	95	95	94	93
Precipitation Potential (%)	13	25	35	40	94	94	94	98	98	98	85	85	85	80	80	80	68	68	68	68	68	68	34	34
Relative Humidity (%)	74	75	78	82	86	86	89	92	98	100	100	100	100	98	94	94	96	97	94	89	87	84	82	80
Rain	Chc	Chc	Chc	Chc	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Lkly	Lkly	Lkly	Lkly	Lkly	Lkly	Chc	Chc
Thunder	--	--	--	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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