Point Forecast: 4 Miles WNW Castleton IL  41.14N 89.77W (Elev. 206 m)	Last Update: 5:17 am CDT Jul 16, 2026

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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: 6am Thu, Jul 16 20267am Thu, Jul 16 20268am Thu, Jul 16 20269am Thu, Jul 16 202610am Thu, Jul 16 202611am Thu, Jul 16 202612pm Thu, Jul 16 20261pm Thu, Jul 16 20262pm Thu, Jul 16 20263pm Thu, Jul 16 20264pm Thu, Jul 16 20265pm Thu, Jul 16 20266pm Thu, Jul 16 20267pm Thu, Jul 16 20268pm Thu, Jul 16 20269pm Thu, Jul 16 202610pm Thu, Jul 16 202611pm Thu, Jul 16 202612am Fri, Jul 17 20261am Fri, Jul 17 20262am Fri, Jul 17 20263am Fri, Jul 17 20264am Fri, Jul 17 20265am Fri, Jul 17 20266am Fri, Jul 17 20267am Fri, Jul 17 20268am Fri, Jul 17 20269am Fri, Jul 17 202610am Fri, Jul 17 202611am Fri, Jul 17 202612pm Fri, Jul 17 20261pm Fri, Jul 17 20262pm Fri, Jul 17 20263pm Fri, Jul 17 20264pm Fri, Jul 17 20265pm Fri, Jul 17 20266pm Fri, Jul 17 20267pm Fri, Jul 17 20268pm Fri, Jul 17 20269pm Fri, Jul 17 202610pm Fri, Jul 17 202611pm Fri, Jul 17 202612am Sat, Jul 18 20261am Sat, Jul 18 20262am Sat, Jul 18 20263am Sat, Jul 18 20264am Sat, Jul 18 20265am Sat, Jul 18 20266am Sat, Jul 18 20267am Sat, Jul 18 20268am Sat, Jul 18 20269am Sat, Jul 18 202610am Sat, Jul 18 202611am Sat, Jul 18 202612pm Sat, Jul 18 20261pm Sat, Jul 18 20262pm Sat, Jul 18 20263pm Sat, Jul 18 20264pm Sat, Jul 18 20265pm Sat, Jul 18 20266pm Sat, Jul 18 20267pm Sat, Jul 18 20268pm Sat, Jul 18 20269pm Sat, Jul 18 202610pm Sat, Jul 18 202611pm Sat, Jul 18 202612am Sun, Jul 19 20261am Sun, Jul 19 20262am Sun, Jul 19 20263am Sun, Jul 19 20264am Sun, Jul 19 20265am Sun, Jul 19 20266am Sun, Jul 19 20267am Sun, Jul 19 20268am Sun, Jul 19 20269am Sun, Jul 19 202610am Sun, Jul 19 202611am Sun, Jul 19 202612pm Sun, Jul 19 20261pm Sun, Jul 19 20262pm Sun, Jul 19 20263pm Sun, Jul 19 20264pm Sun, Jul 19 20265pm Sun, Jul 19 20266pm Sun, Jul 19 20267pm Sun, Jul 19 20268pm Sun, Jul 19 20269pm Sun, Jul 19 202610pm Sun, Jul 19 202611pm Sun, Jul 19 202612am Mon, Jul 20 20261am Mon, Jul 20 20262am Mon, Jul 20 20263am Mon, Jul 20 20264am Mon, Jul 20 20265am Mon, Jul 20 20266am Mon, Jul 20 20267am Mon, Jul 20 20268am Mon, Jul 20 20269am Mon, Jul 20 202610am Mon, Jul 20 202611am Mon, Jul 20 202612pm Mon, Jul 20 20261pm Mon, Jul 20 20262pm Mon, Jul 20 20263pm Mon, Jul 20 20264pm Mon, Jul 20 20265pm Mon, Jul 20 2026

Date	07/16																		07/17
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 (°C)	21	22	24	28	29	31	31	32	32	32	32	33	32	31	29	27	26	24	24	24	23	23	23	22
Dewpoint (°C)	21	22	22	22	23	22	22	22	22	22	22	22	22	22	22	21	21	21	21	21	21	21	21	20
Heat Index (°C)			24	31	33	34	35	35	36	36	36	37	35	35	33	28	26	24	24	24
Surface Wind (mph)	1	1	1	1	1	1	3	3	3	3	3	3	3	2	1	2	2	2	2	3	2	1	2	1
Wind Dir	NW	N	WNW	W	WSW	S	S	S	S	S	S	S	S	S	SSE	SSE	S	SSE	SSE	SSE	S	SSE	S	S
Gust
Sky Cover (%)	21	27	26	25	24	26	28	31	32	34	35	37	40	42	40	39	38	42	47	51	47	43	39	39
Precipitation Potential (%)	1	1	1	1	1	0	3	5	7	9	10	11	12	11	10	8	5	6	6	7	8	10	11	13
Relative Humidity (%)	97	97	87	72	67	61	59	56	54	54	54	52	56	59	65	72	76	82	82	82	84	87	87	87
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																			07/18
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 (°C)	22	23	24	26	29	30	31	31	31	32	31	31	31	29	28	26	25	24	24	23	23	23	23	23
Dewpoint (°C)	21	21	22	23	23	23	23	23	23	23	23	23	23	23	22	22	22	22	21	21	21	21	21	21
Heat Index (°C)			24	26	32	34	34	36	36	36	36	36	34	32	31	26	25	24	24
Surface Wind (mph)	2	2	3	3	5	6	6	8	7	8	7	7	7	6	5	5	5	5	6	6	6	7	7	7
Wind Dir	S	SSW	WSW	SW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	WSW	WSW	WSW
Gust
Sky Cover (%)	39	40	40	41	41	41	42	42	48	54	60	53	46	39	37	36	35	29	24	18	21	23	26	21
Precipitation Potential (%)	11	17	14	12	9	22	35	49	46	44	42	40	37	18	18	18	16	16	16	3	3	3	3	3
Relative Humidity (%)	90	87	87	82	70	65	63	61	61	59	61	61	63	70	72	77	82	85	84	87	87	87	87	87
Rain	--	SChc	--	--	--	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--
Thunder	--	SChc	--	--	--	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	--	--	--	--	--	--	--	--

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