Point Forecast: San Marcos TX  29.88N 97.94W (Elev. 577 ft)	Last Update: 6:48 pm CDT May 23, 2025

[hide menu]

Weather Elements Weather/Precipitation Fire Weather 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 20ft Wind  ktmphkm/hm/s

48-Hour Period Starting: 7pm Fri, May 23 20258pm Fri, May 23 20259pm Fri, May 23 202510pm Fri, May 23 202511pm Fri, May 23 202512am Sat, May 24 20251am Sat, May 24 20252am Sat, May 24 20253am Sat, May 24 20254am Sat, May 24 20255am Sat, May 24 20256am Sat, May 24 20257am Sat, May 24 20258am Sat, May 24 20259am Sat, May 24 202510am Sat, May 24 202511am Sat, May 24 202512pm Sat, May 24 20251pm Sat, May 24 20252pm Sat, May 24 20253pm Sat, May 24 20254pm Sat, May 24 20255pm Sat, May 24 20256pm Sat, May 24 20257pm Sat, May 24 20258pm Sat, May 24 20259pm Sat, May 24 202510pm Sat, May 24 202511pm Sat, May 24 202512am Sun, May 25 20251am Sun, May 25 20252am Sun, May 25 20253am Sun, May 25 20254am Sun, May 25 20255am Sun, May 25 20256am Sun, May 25 20257am Sun, May 25 20258am Sun, May 25 20259am Sun, May 25 202510am Sun, May 25 202511am Sun, May 25 202512pm Sun, May 25 20251pm Sun, May 25 20252pm Sun, May 25 20253pm Sun, May 25 20254pm Sun, May 25 20255pm Sun, May 25 20256pm Sun, May 25 20257pm Sun, May 25 20258pm Sun, May 25 20259pm Sun, May 25 202510pm Sun, May 25 202511pm Sun, May 25 202512am Mon, May 26 20251am Mon, May 26 20252am Mon, May 26 20253am Mon, May 26 20254am Mon, May 26 20255am Mon, May 26 20256am Mon, May 26 20257am Mon, May 26 20258am Mon, May 26 20259am Mon, May 26 202510am Mon, May 26 202511am Mon, May 26 202512pm Mon, May 26 20251pm Mon, May 26 20252pm Mon, May 26 20253pm Mon, May 26 20254pm Mon, May 26 20255pm Mon, May 26 20256pm Mon, May 26 20257pm Mon, May 26 20258pm Mon, May 26 20259pm Mon, May 26 202510pm Mon, May 26 202511pm Mon, May 26 202512am Tue, May 27 20251am Tue, May 27 20252am Tue, May 27 20253am Tue, May 27 20254am Tue, May 27 20255am Tue, May 27 20256am Tue, May 27 20257am Tue, May 27 20258am Tue, May 27 20259am Tue, May 27 202510am Tue, May 27 202511am Tue, May 27 202512pm Tue, May 27 20251pm Tue, May 27 20252pm Tue, May 27 20253pm Tue, May 27 20254pm Tue, May 27 20255pm Tue, May 27 20256pm Tue, May 27 20257pm Tue, May 27 20258pm Tue, May 27 20259pm Tue, May 27 202510pm Tue, May 27 202511pm Tue, May 27 202512am Wed, May 28 20251am Wed, May 28 20252am Wed, May 28 20253am Wed, May 28 20254am Wed, May 28 20255am Wed, May 28 20256am Wed, May 28 2025

Date	05/23					05/24
Hour (CDT)	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18
Temperature (°F)	94	89	85	83	80	78	77	77	76	76	75	74	75	76	78	82	85	88	91	95	96	97	97	96
Dewpoint (°F)	70	71	71	72	73	73	73	73	72	73	72	72	72	72	73	73	73	72	71	70	69	68	69	68
Heat Index (°F)	100	95	90	88	84	78	77	77	76	76	75		75	76	78	87	92	95	98	101	102	102	103	101
Surface Wind (mph)	13	13	13	11	10	10	10	10	10	10	9	9	9	10	10	11	13	14	14	14	14	14	14	14
Wind Dir	SE	SE	SSE	SSE	SSE	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	SSE
Gust	21	21	21	20	20	18								18	20	21	23	23	23	23	23	23	24	24
Sky Cover (%)	13	8	5	9	12	17	41	74	86	81	75	80	84	77	71	49	36	28	29	13	18	14	20	26
Precipitation Potential (%)	3	3	3	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1
Relative Humidity (%)	47	56	63	70	79	85	88	88	89	92	91	92	91	89	84	74	67	59	52	45	41	39	41	40
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date						05/25
Hour (CDT)	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18
Temperature (°F)	95	92	86	83	81	79	78	77	77	77	77	76	77	78	81	83	86	88	91	93	94	94	94	93
Dewpoint (°F)	68	69	70	71	72	73	73	73	74	74	74	74	73	73	74	74	73	72	71	70	69	68	68	68
Heat Index (°F)	100	97	91	88	86	79	78	77	77	77	77	76	77	78	86	90	93	95	98	99	99	99	99	97
Surface Wind (mph)	15	15	15	14	13	11	10	10	9	9	9	8	9	10	10	11	13	14	15	15	16	16	16	17
Wind Dir	SSE	SSE	SSE	SSE	SSE	S	S	S	S	S	S	SSE	SSE	SSE	S	S	S	S	S	S	SSE	SSE	SSE	SSE
Gust	25	25	25	24	23	21	20	18							18	21	23	24	25	25	25	25	25	26
Sky Cover (%)	29	42	33	24	21	40	58	66	73	81	81	82	82	72	63	53	50	46	43	39	35	31	31	31
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	6	6	6	6	6	6	15	15	15	15	15	15
Relative Humidity (%)	42	48	58	66	73	82	86	88	90	89	92	93	88	85	79	74	65	59	52	47	44	43	43	44
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc

International System of Units Forecast Discussion 7-Day Forecast Hourly Weather Graph NWS Austin/San Antonio Current Observations Satellite Imagery Interactive Grids Point Forecast Matrices Fire Weather Drought Rivers & Lakes Climate Data NOAA Weather Radio Contact Local Office