Point Forecast: Ballwin MO  38.58N 90.55W (Elev. 178 m)	Last Update: 9:26 pm CDT Sep 7, 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 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: 10pm Mon, Sep 7 202611pm Mon, Sep 7 202612am Tue, Sep 8 20261am Tue, Sep 8 20262am Tue, Sep 8 20263am Tue, Sep 8 20264am Tue, Sep 8 20265am Tue, Sep 8 20266am Tue, Sep 8 20267am Tue, Sep 8 20268am Tue, Sep 8 20269am Tue, Sep 8 202610am Tue, Sep 8 202611am Tue, Sep 8 202612pm Tue, Sep 8 20261pm Tue, Sep 8 20262pm Tue, Sep 8 20263pm Tue, Sep 8 20264pm Tue, Sep 8 20265pm Tue, Sep 8 20266pm Tue, Sep 8 20267pm Tue, Sep 8 20268pm Tue, Sep 8 20269pm Tue, Sep 8 202610pm Tue, Sep 8 202611pm Tue, Sep 8 202612am Wed, Sep 9 20261am Wed, Sep 9 20262am Wed, Sep 9 20263am Wed, Sep 9 20264am Wed, Sep 9 20265am Wed, Sep 9 20266am Wed, Sep 9 20267am Wed, Sep 9 20268am Wed, Sep 9 20269am Wed, Sep 9 202610am Wed, Sep 9 202611am Wed, Sep 9 202612pm Wed, Sep 9 20261pm Wed, Sep 9 20262pm Wed, Sep 9 20263pm Wed, Sep 9 20264pm Wed, Sep 9 20265pm Wed, Sep 9 20266pm Wed, Sep 9 20267pm Wed, Sep 9 20268pm Wed, Sep 9 20269pm Wed, Sep 9 202610pm Wed, Sep 9 202611pm Wed, Sep 9 202612am Thu, Sep 10 20261am Thu, Sep 10 20262am Thu, Sep 10 20263am Thu, Sep 10 20264am Thu, Sep 10 20265am Thu, Sep 10 20266am Thu, Sep 10 20267am Thu, Sep 10 20268am Thu, Sep 10 20269am Thu, Sep 10 202610am Thu, Sep 10 202611am Thu, Sep 10 202612pm Thu, Sep 10 20261pm Thu, Sep 10 20262pm Thu, Sep 10 20263pm Thu, Sep 10 20264pm Thu, Sep 10 20265pm Thu, Sep 10 20266pm Thu, Sep 10 20267pm Thu, Sep 10 20268pm Thu, Sep 10 20269pm Thu, Sep 10 202610pm Thu, Sep 10 202611pm Thu, Sep 10 202612am Fri, Sep 11 20261am Fri, Sep 11 20262am Fri, Sep 11 20263am Fri, Sep 11 20264am Fri, Sep 11 20265am Fri, Sep 11 20266am Fri, Sep 11 20267am Fri, Sep 11 20268am Fri, Sep 11 20269am Fri, Sep 11 202610am Fri, Sep 11 202611am Fri, Sep 11 202612pm Fri, Sep 11 20261pm Fri, Sep 11 20262pm Fri, Sep 11 20263pm Fri, Sep 11 20264pm Fri, Sep 11 20265pm Fri, Sep 11 20266pm Fri, Sep 11 20267pm Fri, Sep 11 20268pm Fri, Sep 11 20269pm Fri, Sep 11 202610pm Fri, Sep 11 202611pm Fri, Sep 11 202612am Sat, Sep 12 20261am Sat, Sep 12 20262am Sat, Sep 12 20263am Sat, Sep 12 20264am Sat, Sep 12 20265am Sat, Sep 12 20266am Sat, Sep 12 20267am Sat, Sep 12 20268am Sat, Sep 12 20269am Sat, Sep 12 2026

Date	09/07		09/08
Hour (CDT)	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Temperature (°C)	23	22	22	21	21	20	19	19	19	18	20	22	26	29	31	33	34	34	35	34	34	32	29	28
Dewpoint (°C)	14	14	13	14	13	14	14	13	13	14	14	17	17	18	18	19	19	19	19	19	19	19	19	18
Heat Index (°C)													26	29	32	34	36	36	37	36	36	33	31	29
Surface Wind (mph)	3	3	3	3	2	2	2	2	1	2	2	2	3	3	3	3	3	3	5	5	5	3	3	3
Wind Dir	E	E	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	S	S	S	S	SE	SE	SE	SE	SE	SE	SE	S
Gust
Sky Cover (%)	5	4	6	3	1	3	16	27	39	41	25	20	30	33	28	27	24	23	23	11	19	14	6	8
Precipitation Potential (%)	0	0	0	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	57	59	57	63	61	68	70	70	70	75	70	71	58	51	48	44	41	41	39	41	41	47	53	55
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date			09/09
Hour (CDT)	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Temperature (°C)	27	27	26	26	26	26	24	24	24	24	26	28	31	32	34	35	36	36	36	35	33	31	29	28
Dewpoint (°C)	19	19	19	19	19	19	19	19	19	19	20	21	21	22	22	22	22	23	23	23	23	23	23	23
Heat Index (°C)	28	28	26	26	26	26	24	24	24	24	26	29	33	36	38	40	41	42	41	41	38	36	33	31
Surface Wind (mph)	5	5	5	5	5	6	6	6	6	6	6	6	7	7	7	7	6	6	5	5	3	3	2	1
Wind Dir	S	S	S	S	S	S	S	S	S	S	S	SW	SW	SW	SW	W	W	SW	SW	W	NW	NW	W	SW
Gust
Sky Cover (%)	12	19	6	13	4	5	6	6	30	34	45	51	45	47	32	31	31	31	31	39	48	56	62	67
Precipitation Potential (%)	0	0	0	0	0	0	0	5	16	21	21	21	21	21	21	50	50	50	50	50	50	62	62	62
Relative Humidity (%)	60	62	64	67	67	67	71	71	71	74	71	65	57	54	49	48	46	46	48	49	54	61	67	77
Rain	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Lkly	Lkly	Lkly
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc

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