Point Forecast: Green Rock IL  41.49N 90.36W (Elev. 587 ft)	Last Update: 10:42 am CST Jan 17, 2026

[hide menu]

Weather Elements Fire Weather Probabilistic Forecasts (Experimental) Description | Survey Temperature (°F) Dewpoint (°F) Wind Chill (°F) 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-ft) Grassland Fire Danger Index 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 Sat, Jan 17 20261pm Sat, Jan 17 20262pm Sat, Jan 17 20263pm Sat, Jan 17 20264pm Sat, Jan 17 20265pm Sat, Jan 17 20266pm Sat, Jan 17 20267pm Sat, Jan 17 20268pm Sat, Jan 17 20269pm Sat, Jan 17 202610pm Sat, Jan 17 202611pm Sat, Jan 17 202612am Sun, Jan 18 20261am Sun, Jan 18 20262am Sun, Jan 18 20263am Sun, Jan 18 20264am Sun, Jan 18 20265am Sun, Jan 18 20266am Sun, Jan 18 20267am Sun, Jan 18 20268am Sun, Jan 18 20269am Sun, Jan 18 202610am Sun, Jan 18 202611am Sun, Jan 18 202612pm Sun, Jan 18 20261pm Sun, Jan 18 20262pm Sun, Jan 18 20263pm Sun, Jan 18 20264pm Sun, Jan 18 20265pm Sun, Jan 18 20266pm Sun, Jan 18 20267pm Sun, Jan 18 20268pm Sun, Jan 18 20269pm Sun, Jan 18 202610pm Sun, Jan 18 202611pm Sun, Jan 18 202612am Mon, Jan 19 20261am Mon, Jan 19 20262am Mon, Jan 19 20263am Mon, Jan 19 20264am Mon, Jan 19 20265am Mon, Jan 19 20266am Mon, Jan 19 20267am Mon, Jan 19 20268am Mon, Jan 19 20269am Mon, Jan 19 202610am Mon, Jan 19 202611am Mon, Jan 19 202612pm Mon, Jan 19 20261pm Mon, Jan 19 20262pm Mon, Jan 19 20263pm Mon, Jan 19 20264pm Mon, Jan 19 20265pm Mon, Jan 19 20266pm Mon, Jan 19 20267pm Mon, Jan 19 20268pm Mon, Jan 19 20269pm Mon, Jan 19 202610pm Mon, Jan 19 202611pm Mon, Jan 19 202612am Tue, Jan 20 20261am Tue, Jan 20 20262am Tue, Jan 20 20263am Tue, Jan 20 20264am Tue, Jan 20 20265am Tue, Jan 20 20266am Tue, Jan 20 20267am Tue, Jan 20 20268am Tue, Jan 20 20269am Tue, Jan 20 202610am Tue, Jan 20 202611am Tue, Jan 20 202612pm Tue, Jan 20 20261pm Tue, Jan 20 20262pm Tue, Jan 20 20263pm Tue, Jan 20 20264pm Tue, Jan 20 20265pm Tue, Jan 20 20266pm Tue, Jan 20 20267pm Tue, Jan 20 20268pm Tue, Jan 20 20269pm Tue, Jan 20 202610pm Tue, Jan 20 202611pm Tue, Jan 20 202612am Wed, Jan 21 20261am Wed, Jan 21 20262am Wed, Jan 21 20263am Wed, Jan 21 20264am Wed, Jan 21 20265am Wed, Jan 21 20266am Wed, Jan 21 20267am Wed, Jan 21 20268am Wed, Jan 21 20269am Wed, Jan 21 202610am Wed, Jan 21 202611am Wed, Jan 21 202612pm Wed, Jan 21 20261pm Wed, Jan 21 20262pm Wed, Jan 21 20263pm Wed, Jan 21 20264pm Wed, Jan 21 20265pm Wed, Jan 21 20266pm Wed, Jan 21 20267pm Wed, Jan 21 20268pm Wed, Jan 21 20269pm Wed, Jan 21 202610pm Wed, Jan 21 202611pm Wed, Jan 21 2026

Date	01/17												01/18
Hour (CST)	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)	17	17	18	17	17	17	16	15	14	14	13	12	11	11	10	9	9	10	10	10	11	13	15	17
Dewpoint (°F)	7	8	8	8	9	8	8	6	6	4	3	1	1	0	0	-1	-1	0	-1	0	0	1	1	3
Wind Chill (°F)	2	1	2	1	1	2	1	-1	-1	-1	-2	-3	-4	-3	-5	-5	-5	-4	-2	-3	-3	0	2	4
Surface Wind (mph)	16	17	18	18	17	16	16	16	15	15	14	14	13	11	11	10	10	10	8	9	10	10	11	13
Wind Dir	W	W	W	W	W	W	W	W	NW	W	W	W	W	W	W	W	W	SW	SW	SW	SW	SW	SW	SW
Gust	25	26	28	29	28	28	28	28	28	25	24	23	22	21	21	20	20	18				20	21	22
Sky Cover (%)	92	100	100	100	96	96	95	92	87	87	84	75	69	58	56	53	62	64	71	73	82	83	86	84
Precipitation Potential (%)	50	70	79	83	61	45	23	12	5	6	3	2	1	0	1	0	0	0	0	7	14	12	10	8
Relative Humidity (%)	64	67	64	67	70	67	70	67	70	64	64	60	63	60	63	63	63	63	60	63	60	58	53	53
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	Chc	Lkly	Ocnl	Ocnl	Lkly	Chc	SChc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date													01/19
Hour (CST)	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)	19	21	22	23	23	23	22	22	21	19	17	14	11	9	7	6	4	3	2	2	3	4	5	7
Dewpoint (°F)	5	7	9	11	13	14	14	13	12	10	7	4	1	-1	-3	-5	-6	-7	-8	-8	-8	-8	-7	-7
Wind Chill (°F)	6	8	9	11	11	12	11	10	8	4	1	-3	-8	-10	-13	-14	-17	-18	-19	-19	-17	-15	-14	-12
Surface Wind (mph)	14	14	14	14	13	10	10	11	15	17	18	20	21	21	21	21	20	20	18	18	17	17	17	17
Wind Dir	S	SW	SW	SW	SW	W	W	W	W	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust	22	23	23	23	21	20	18	21	24	28	30	31	32	33	33	33	32	31	30	29	29	28	28	26
Sky Cover (%)	87	87	86	86	83	81	78	76	75	73	72	70	69	62	55	48	46	44	42	42	43	43	42	41
Precipitation Potential (%)	21	33	46	50	55	59	4	4	4	4	4	4	1	1	1	1	1	1	0	0	0	0	0	0
Relative Humidity (%)	54	54	57	59	65	68	71	68	68	67	64	64	63	63	63	60	62	62	62	62	59	56	57	52
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	SChc	Chc	Chc	Chc	Lkly	Lkly	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

International System of Units Forecast Discussion 7-Day Forecast Hourly Weather Graph Area Hourly Graphs Inc Aviation Hazardous Weather Outlook Public Information Statement Climate Information Weather Event Summaries Home