Point Forecast: St. Charles County Smartt Airport MO  38.94N 90.45W (Elev. 427 ft)	Last Update: 3:01 pm CDT Jul 11, 2026

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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 Trans. 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: 3pm Sat, Jul 11 20264pm Sat, Jul 11 20265pm Sat, Jul 11 20266pm Sat, Jul 11 20267pm Sat, Jul 11 20268pm Sat, Jul 11 20269pm Sat, Jul 11 202610pm Sat, Jul 11 202611pm Sat, Jul 11 202612am Sun, Jul 12 20261am Sun, Jul 12 20262am Sun, Jul 12 20263am Sun, Jul 12 20264am Sun, Jul 12 20265am Sun, Jul 12 20266am Sun, Jul 12 20267am Sun, Jul 12 20268am Sun, Jul 12 20269am Sun, Jul 12 202610am Sun, Jul 12 202611am Sun, Jul 12 202612pm Sun, Jul 12 20261pm Sun, Jul 12 20262pm Sun, Jul 12 20263pm Sun, Jul 12 20264pm Sun, Jul 12 20265pm Sun, Jul 12 20266pm Sun, Jul 12 20267pm Sun, Jul 12 20268pm Sun, Jul 12 20269pm Sun, Jul 12 202610pm Sun, Jul 12 202611pm Sun, Jul 12 202612am Mon, Jul 13 20261am Mon, Jul 13 20262am Mon, Jul 13 20263am Mon, Jul 13 20264am Mon, Jul 13 20265am Mon, Jul 13 20266am Mon, Jul 13 20267am Mon, Jul 13 20268am Mon, Jul 13 20269am Mon, Jul 13 202610am Mon, Jul 13 202611am Mon, Jul 13 202612pm Mon, Jul 13 20261pm Mon, Jul 13 20262pm Mon, Jul 13 20263pm Mon, Jul 13 20264pm Mon, Jul 13 20265pm Mon, Jul 13 20266pm Mon, Jul 13 20267pm Mon, Jul 13 20268pm Mon, Jul 13 20269pm Mon, Jul 13 202610pm Mon, Jul 13 202611pm Mon, Jul 13 202612am Tue, Jul 14 20261am Tue, Jul 14 20262am Tue, Jul 14 20263am Tue, Jul 14 20264am Tue, Jul 14 20265am Tue, Jul 14 20266am Tue, Jul 14 20267am Tue, Jul 14 20268am Tue, Jul 14 20269am Tue, Jul 14 202610am Tue, Jul 14 202611am Tue, Jul 14 202612pm Tue, Jul 14 20261pm Tue, Jul 14 20262pm Tue, Jul 14 20263pm Tue, Jul 14 20264pm Tue, Jul 14 20265pm Tue, Jul 14 20266pm Tue, Jul 14 20267pm Tue, Jul 14 20268pm Tue, Jul 14 20269pm Tue, Jul 14 202610pm Tue, Jul 14 202611pm Tue, Jul 14 202612am Wed, Jul 15 20261am Wed, Jul 15 20262am Wed, Jul 15 20263am Wed, Jul 15 20264am Wed, Jul 15 20265am Wed, Jul 15 20266am Wed, Jul 15 20267am Wed, Jul 15 20268am Wed, Jul 15 20269am Wed, Jul 15 202610am Wed, Jul 15 202611am Wed, Jul 15 202612pm Wed, Jul 15 20261pm Wed, Jul 15 20262pm Wed, Jul 15 20263pm Wed, Jul 15 20264pm Wed, Jul 15 20265pm Wed, Jul 15 20266pm Wed, Jul 15 20267pm Wed, Jul 15 20268pm Wed, Jul 15 20269pm Wed, Jul 15 202610pm Wed, Jul 15 202611pm Wed, Jul 15 202612am Thu, Jul 16 20261am Thu, Jul 16 20262am Thu, Jul 16 2026

Date	07/11									07/12
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 (°F)	81	82	81	81	81	78	76	75	74	73	72	71	69	69	69	68	69	72	74	79	81	83	84	85
Dewpoint (°F)	71	71	70	70	70	70	70	70	70	69	69	68	67	67	66	65	66	67	67	68	68	68	68	68
Heat Index (°F)	84	86	84	85	84	78	76	75												81	84	86	87	89
Surface Wind (mph)	10	11	11	11	10	8	7	6	6	7	7	7	7	7	7	7	8	8	8	9	10	11	13	13
Wind Dir	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	NE	NE	NE	NE	NE	NE
Gust
Sky Cover (%)	82	74	61	35	22	18	12	2	3	3	4	1	4	4	5	2	4	0	0	1	4	6	8	7
Precipitation Potential (%)	72	55	31	25	9	6	3	2	2	1	0	0	1	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	72	70	70	68	70	76	82	84	87	87	90	90	92	92	92	91	89	85	78	69	65	61	59	57
Rain	Lkly	Lkly	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	Lkly	Lkly	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date										07/13
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 (°F)	85	85	86	84	84	81	77	75	74	72	72	70	68	68	68	67	69	72	76	80	82	84	86	86
Dewpoint (°F)	67	67	67	67	68	69	68	68	68	67	66	66	66	65	64	64	65	66	66	66	66	66	66	66
Heat Index (°F)	88	88	88	87	87	84	77	75											76	82	84	86	88	89
Surface Wind (mph)	13	13	13	11	9	8	7	6	5	5	5	3	5	5	5	6	6	6	6	7	8	10	11	11
Wind Dir	NE	NE	NE	NE	NE	NE	NE	NE	NE	N	N	N	N	N	N	N	N	N	NE	NE	NE	NE	NE	NE
Gust
Sky Cover (%)	6	10	5	10	7	0	0	0	0	1	1	0	0	1	0	0	0	0	0	0	1	3	4	5
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1
Relative Humidity (%)	55	55	54	56	59	67	74	79	82	84	81	87	92	89	88	91	87	83	72	62	58	55	51	51
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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